I am preparing to rebuild my 84 evo engine . It will be the first time I rebuild a Harley engine and your videos are awesome. Thanks for all the time and effort you put into these.
Slow but steady makes the grade, haste makes waste, The turtle wins the race, step by step. It's good some people still take pride in doing things correctly. I would not hesitate to pay this man top dollar to build a motor as I know it will not be junk.
i guess Im randomly asking but does someone know a trick to get back into an instagram account? I was stupid forgot the login password. I love any help you can offer me!
@Logan Mauricio I really appreciate your reply. I found the site on google and im trying it out now. Looks like it's gonna take a while so I will reply here later with my results.
Thanks mike like how you explain everything ...these are some of the best videos on how to...keep up the good work I gotta know...keep the shiny side up
After watching your videos I feel confident that I can change my valve guide seals. I have the same motor. 98 evo in a road king. Man I love all your videos ,thanks to you the other mike and Bob that make these. I've got a old 98 road king and a 68 ironhead . All your videos come in so handy.
I have a 1998 FLHT with 25,000 miles and Im installing ev 27 and wisco 10-1 and killer carb rebuild and thunderheader. This is my second build so I've watched and learned a lot from you. Thanks for the info at a good pace. The cam bearing tool was simple once I watched you a few times.
Thanks for the videos that you I appreciate all that you're doing. I lost a couple buddies in a motorcycle wreck and I was paralyzed in the process as well. Watching you rebuild your motors brings me out of a rupt since I can't ride no more. My riding buddies were Terry and Rhonda Hatcher. Ride on Mike. 👍👍👍👍👍
Thank You. I wish I could help you. I'm almost finished with the comments this evening. Then, there will be several moments of silence filled with wishes for you and your friends.
Mike you show real world wrenching small errors you always catch great tips things not always go smooth like when I work on stuff but it all works out keep up the great vids
Explained very well Mike,,even the break down of foot pounds to inch pounds,,or vice versa,,may I add still sounds like ya ain't over what ya had,,breathing heavy,still good job and peace
Thanks Mike Keep up the good work brother. Your a Master no doubt . I'm getting up there myself things I could do last year I forget this year . your videos are a god -sent .
You know as I watch you put this evol motor together I must say they're definitely a different animal and a different breed because I've built pretty much all kinds of jap bikes and honestly I don't know nothing about Harleys but I'm willing to learn I've been watching your videos now for 3 days straight cuz I just picked up a Harley electria glide and 84 trying to find a manual feel like I said it's all new to me trying to rebuild this one
Okay, next time I set Evo valves. But, the procedure is the same on any of the hydraulic lifter models with adjustable pushrods. Just have to follow the manufacturers recommendations on the amount to extend the pushrods. Don't forgrt to let them bleed down before rotating the engine.
Thanks for the video Mike. Ive never really played with Evos too much but i think they are the best engine from HD as far as performance and reliability goes. Im a Shovel guy at heart though... ill never sell my Shovel haha
You are amazing sir , im sean hector son of ted hector the world land speed record holder at bonneville on harley flatheads and indians and i can say you should have been a teacher sir! I love your videos and im glad your feeling better!
I won't tell your dad. But, my favorite old roadbike is my 77 Shovelhead I bought new in 1978. But, little by little, I've collected the bikes of my dreams. I love each of them. Now, I need to build my Flathead 80 (UL).
@@pacificmike9501 if its the one in your videos thats the most beautiful shovelhead ive ever seen, i also had a 77 but it was a low rider and the 5 times i got to drive it were well worth the 30 times i worked on it lol
I've worked on mine (that's the one in the videos, thank you) a lot, but then, 400m miles requires quite a bit of maintenance. It's been my test bench for products since Shovelheads were the newest thing out, when I started working in shops. She gets whatever she wants.
I could of used your advice in 2003 to 2017 Thanks Mike . I always used SE adjustable push rods they are the same size and I never do them till im done with the top end on my bike , if its staying stock with color pushrods I do it this way .
Hey Mike. I love the informative videos you produce. Got to say, you'd be the go-to man for honest answers concerning EVO engines. Here is a question Ive been pondering. I think I know the answer, just looking for a confirmation. Can EFI be replaced with a carb? Thank you in advance and God bless you brother.
Thank you and yes. The fuel injection system used on Evos was difficult to diagnose and very few people ever learned them well. The newer injections were much easier to deal with and came out in 2002. To replace the injection system with carburetion is quite involved. Because the injection and the ignition systems are integrated into one system, it all has to be replaced along with the wiring system on the bike. So, you are now installing a carburetor and manifold, an entire ignition system and complete wiring harness. I've done it. It's worth it. It's quite an expense in time and materials, but takes some dedication.
Pacific Mike Thank you for replying so quickly, I know you are busy. You confirmed my suspicions. I'm gathering information for my next bike build. Since I'm getting old, this will be my last bike so I'm very particular in the way I want it. You are a blessing brother. God bless you always.
Pacific Mike After watching your great video and seeing a methodical walk-through (we seem to share the same style humor) I might go ahead and purchase those enticing S&S heads bumping up static comp. ratio from 8.5:1 to 8.8:1.
Mike, I pulled heads of and evo with adjustable pushrods and did not touch any of the adjustments on them.I then had the heads surfaced and complete valve job done. So my question is.will I have to readjust these pushrods since I did not mess with any of the adjustments to them
Yes. Take it slow. You've changed the height of the heads. Be sure you do that assembly and reassembly according to the factory service manual. These things are very different than other engines. We do show how to adjust valves and assemble those heads onto the bike.
Good morning Sir I truly enjoy your video's. Would like you're opinion. I just bought a 94 RK and will be doing some work to it. without going crazy would like to do a bolt in cam up grade was thinking woods W6.. And your thoughts on a BDL 2" belt drive, I live in Texas and hoping belt drive would help her run a little cooler. Stay safe Brother
The primary would not have hot oil in it. I don't know that the engine would run any cooler. As far as your cam is concerned, you'll have to read what the cam is intended to do. At what RPM it's going to make its power is dependent upon what you want.
Hey Mike Thank You for the instructive video (Bob's-Evo part 11). I found it to be full of valuable information. I bought a used 96 FXST. It has an S&S carb on it. It no longer vents oil vapors into the carb air filter. It has a vent system like my old shovel. The FXST needed some gaskets replaced (rocker boxes). The shop that was helping me closed due to the owners health. The work had been started but not finished. I've got the bike and parts back home. My question is: Do I still need to install the umbrella gasket? I'm stuck no one seems to have a definitive answer. 1) it has a different carb set up and 2) it has a vent hose like the older bikes. What would your educated guess be? One more quick note the old shovel is running very nice with the Rn,RJ plugs. ThanK you for your videos and advice. Both are Priceless.
Well, it sounds like you're using "early Evo" cases. They vent from the crankcase. It sounds like you're using "late Evo" cylinder heads. You can use both breathing systems. If you don't use the "top breathers," and you have them plugged off, you don't need the umbrella valves. If you choose to leave them open and vent to the air cleaner, or the atmosphere, with hoses, you'll need the umbrella valves.
@@pacificmike9501 The cases are Delkron , the jugs and heads are Harley. T he top breather is blocked off. Than you for your time once again. You are an enormous help too many.
Getting tired of bobby's motor! It's a nice motor LOL..... What manual are you Referencing out of ? Getting ready to do valve job on my 93 EVO MOTOR... Thank you
Is there a reason one of the rockers would be tighter than the other one? It doesnt seem bad, but I dont know. Something I noticed putting my motor together. Thank you for teaching me. I appreciate it tremendously.
Pacific Mike I didn’t know a DAM thing about fixing a head gasket... watched your videos ... well it runs like a champ ........🍻really thank you .....🍻🍻
What year motor is that? I’m building a 1990 FXRT evolution. Being a crankcase breather, do I use the umbrella valves? Thanks a lot for the videos Mike! Helped me along the way a ton!
Great video!! Quick question, I'm rebuilding a 92 Evo which is a bottom breather motor, but came with top breather heads that were plugged with solid breather head bolts from the factory. Would you suggest throwing some umbrella valves in them and running both top and bottom breather?
@@pacificmike9501 from my understanding 1992/1993 is when Harley made the switch form bottom breather to top breather.. 92' was bottom breather but came with heads casted for top breathing, just no umbrella valves and solid bolts.. In 93' Harley eliminated bottom breather and went with top breather only.
@@pacificmike9501 I know the EVO motors are known for base gasket leaks. Any suggestion for when I do my top end? Which gaskets should I be using, etc?
You might want to try the steel cometic base gaskets. The big deal really is to start your motor up and let it get warm before hammering on the throttle.
After 26 years on a knucklehead, due to spinal problems, i've recently change to a 1984 FXR, with a very early Evo. So now i have to learn this Engine inside out and you'r video is a great Way to start. So here's ny question: what function do the umbrella Valve have. Is it presurre release or just a one way Valve ?
They're just a one way valve on the breathing system. They came in 19992, when the Evo motor became a top breather to exxhale into the carburetor directly from the heads. Something to do with emissions. Prior to that, Evos had case breathers down below like any Harley before that point in time. When I do a big Evo motor with lots of inches, using S&S cases, I employ top breathers and bottom breathers into the atmosphere. This is, of course, "For Offroad Use Only."
Ok thanks, then i dont have mind about it on a -84 Evo. I'm used to the timing case breather. My Evo is so early that is still have the three bolt clutch tree and a secondary chain. Greetings from Denmark.
I want to do mine again it was so much fun for not being a mechanic and my first time doing it almost a year later no leaks and running strong . I was surprised on how basic it was and made me feel great ! If course mine was stock so the push rods where color coated so it made it easier. Love watching you Mike!!
Well then, maybe your neighbor has an engine they now need rebuilt lol. i think it's great you pay it forward with Evo's, Knuckles, Pans etc, it's your comfort zone but you're an intelligent man and I think you should try to challenge yourself, venture out into the twin cam era, early years with a carb and timken bottom. Most of the HD's on the road today are TC's and all those people also need a Pacific Mike. Plus, I'm sure another 30K subs couldn't hurt.
It's not just a " comfort zone." I love the way the old motors run. I love the way the old motors sound, feel, smell. and look. The "modern" motors are fine. In fact, I made a living out of them for a long time. But, the dealerships don't work on the old motors and I still love them. I built the Evo motor for a friend and showed it on TH-cam for the people interested. I know there's a lot of them, but my preference is really the older motors.
Hello MIke, enjoy the videos don't know how many times I repeatedly watch this one:) Is there another rubber seal that goes up into the rocker box hole where the upper lifter tube fits in, other than the one that's on the lifter tube?
No. Just don't over tighten and damage the holes. The top ones, between the boxes can crack at the holes. By the way, if the pushrod tube is leaking, I don't know what year Shovelhead you have. Be sure and use the right seal. Sometimes you need to get a little creative with those tubes.
@@pacificmike9501 I'm sorry, it is an 85 Evolution engine. It seems to fit better without that rubber seal on my finger when I just use the rubber seal on the upper tube for the push rod. I bought a tube/seal kit I think for different models. So I wasn't sure which one was the correct one to use.
@@pacificmike9501 Thank you Mike that worked out nicely. Now the book I have says to put the front cylinder at TDC and I noticed that the rear piston is also high in the cylinder. Can I just the rear cylinder also at this time?
I like the Evo motors. I had one back in the 90s. What is your opinion of the twin cam engine? I have heard that they have more possibilities of trouble compared to Evo or M8 because their flywheel is pressed on and the tensioners are plastic.
Mike, how much should I be able to slide the rockers from left to right when they are installed in the rocker box ? I have at the least, 1 rocker that im able to slide it lefy to right more than the other rockers. That causes me to wonder if the lower part of the rocker box ( rocker box inner ) is worn. Or maybe the end of the rocker is worn. Leaving to much clearance, allowing the rocker to slip on the shaft from side to side and knock against the rocker box, at the end of the shaft. I cant seem to find a specification for this.
Assuming you're working on an Evolution Engine, it's certainly covered in the service manual in section 3, under specifications (go to "rocker arm." Service Wear Limits, go to "rocker arm."
@@pacificmike9501 I did find that specification, Mike. Max clearance, .025 . Mine is within spec. I had also noticed the shaft itself slides left to right, more than all the others. Rough estimate it moves about 3/16 from left to right. That I cant find a spec for. Lol. I have s&s shafts and forged rockers on the way. Im just going to leave it alone for now. Ive decided to jist collect parts ( and tools )until I have everything to pull the entire engine down after the weather gives out in late fall.
Hi Mike Pacific Bob here, 1st i gotta say a huge thanks for putting out such great informative videos. I have a completley original 85 FXR with 43miles on it. She has very quiet running motor although Im giving her a bit of a pep up. EV27cam and new cam bearing, Keith black 9:5-1comp piston kit and new tappets. Im new to harleys, whats a reasonably priced quality or brand tappet set (or Just go OEM)? The cam says its a drop in install can i just re use my original pushrods? do i need to use any certain type or material rocker box gaskets on the 85 model evo (Cork for example)? With the bump up in compression you think my old starter set up will have trouble? should i look into compression release or higher output starter motor? Doesnt look like much room to install the compression releases on my head.
I don't mean to burst your bubble, but, first off, the original lifters are good for, probably 80 thousand miles, but a good "aftermarket set would probably be better. I suggest a good set of steel adjustable pushrods. The cam you've selected is fine. I don't recommend specific brands. If you're raising your compression, be sure you "clay" the top of them for clearance with your valves opening. That "drop-in" cam is a drop in with a stock motor. Now, you're changing it. A mild cam, a good carburetor, a nice set of free flowing exhaust pipes, a good ignition system, and you'll be amazed how much it will wake up. That 85 cam isn't really that bad either. Here in California, Harleys didn't get bad cams until 1988.
Is there a definitive way to cure the pushrod rubbing the upper tube at the top? .543 lift, stock ratio rockers, S&S quickee adj. pushrods, .030 head gasket. So shorter stack + higher lift = pushrod rubbing. I’ve seen people bore the upper pushrod tube where it meets the head a bit to gain clearance, but before I get after it I’m seeking as much advice as possible.
There are thinner chrome moly pushrods that I've used in the past. I assume you're doing an Evo. Crane made those pushrods and they might be available from S&S now.
@@pacificmike9501 correct it is in fact an evo. For once when I tell the mrs my FXR is almost done she might believe me ! I’ll look into the thinner push rods thank you.
Mike I notice your push rod's are adjustable mine aren't my rear lifter block was leaking change that changed push o Rings can't get rockers back in do I have to pull Head this is not like my knuck or pan Help
The original pushrods in an Evo are non adjustable. The ones in this motor have been changed to aftermarket adjustables. They usually get changed when you change the cam. Now that you are where you are, rotate the engine by hand untill both lifters for the cylinder you're working on are bottomed. The rocker box with its rocker arms should be removed. Pushrods and tubes installed. Rocker boxes can now be replaced with their rocker arms. In removing rocker boxes on Evos, loosen the bolts a little at a time to keep stresses spread out and even. Same thing when reinstalling them. Replace all gaskets. You don't have to pull the head, just the rocker boxes. If you pull the cam, you can do all this stuff from the bottom. You're right, ain't easy.
Hi mike and all the other bikers out there. Does this video cover installing new rocker gaskets? Im 31, in England and have a leak on the top pots of my 883. Any and all help and advice welcome
Hey mike long time no watch ive been in the slammer,anyways i thing u are the most best harley mechanic alive, inhave a serious problem my brother died and his father is like 83 years old to ride so he gave me his 1995 fxsts softail springer , its been sitting in a garage since 1995 he put a s&s hyper charger on it,small oil cooler , the works money to him was not and option, im not anyways i drove it home ran great. , now the problems are this i have the click of death , so i installed that cylonoid it fire right up 1 time, but flames were shoting out the ehaust then i died again,1more thing its constantly leakkng gas out of the over flow tupe?is there a way to fix that float leak without takin off all that hard where like hyper charger carb etc, its not tuned. Right either but first i beliieve i have to stop the gas leakin from the over flow, mike man my lady died as well im not in gd shape the only thearaly is takin a long ride can u please givensum advice to put this to rest for ever s.o.s num1 fan
The carburetor should be removed and boiled out. The overflow tube is leaking gas because the float and needle need cleaning, probably the whole fuel system needs cleaning. Fresh fluids. Fresh gasoline. Add a fuel filter.
@@pacificmike9501 hey mike would u recomend thks set up on the bike inmean the hyper charger the s&s , dmall oil cooler and k belkeve skngle fkre ignitkon trip lights in front etc on fxsts softail kve never seen a hyper charger on a softail
We’d love to hear your thoughts on gasket selection. Not just brand but also material, fire rings, where to use gasket sealer and where not to, as well as what kind, greasing o-rings and the whole bit. That could be a video in itself. I’d definitely watch!
They are 1/4 x 20 allen head cap screws. Your parts manual or any dealership has the part number. Harley uses a bunch of subcontractors to manufacture parts.
Go to our TH-cam homepage and tap on the word "playlists." Go to the list that says "Installing a high performance topend onto a 4 5/8 stroker." I think you'll find what you're looking for there.
The intakes and exhaust are different length from each other. They used to color code them. But that was back in the beginning. If installing a different cam than the original, you need to replace them with adjustables anyway. If reassembling a stock motor, put them back where they came from. The exhausts are longer than the intakes.
@18:50 you got confuse ??? on that umbrella valve??? you need a break and have a red bull...you can install the umbrella valve on the wrong side of that head, and my god that engine will smoke like you never seen a engine smoke Haha... this happen in a school for harley Haha... pulled head cover off and guess what the umbrella valve was on the wrong side Haha.... Shane Conley harley master tech on you tube talks about a student that install that rubber valve on the wrong side...
You are so right. Yah, I get a case of the "tireds." And I really prefer my old stuff. I've stayed away from late model bikes for a long time. I just help someone out occasionally. Flatheads through Shovels is where I get my Harley joy. I worked on later stuff until I retired, about ten years ago. I built some very fast twin cams and very fast Evos for people. They loved 'em. And, I made money. I'm going for a thrill ride in the mountains, on my Knucklehead today.
@@pacificmike9501 when I tighten the oil pump and spent the gear. It seems there to spent good except in one area of the rotation and then it spin easy again. I what to know is this normal?
I am preparing to rebuild my 84 evo engine . It will be the first time I rebuild a Harley engine and your videos are awesome. Thanks for all the time and effort you put into these.
I'm glad to advise. But, buy a service manual. Some things you will be equipped to handle and some you won't.
Slow but steady makes the grade, haste makes waste, The turtle wins the race, step by step. It's good some people still take pride in doing things correctly. I would not hesitate to pay this man top dollar to build a motor as I know it will not be junk.
Thank You. But, I'm retired and playing with my toys. I give a hand once in a while, but this is what I worked for.
I've been searching for informative videos on how do evo rebuilds. Your process is by far the best. It's like I'm back in small engines class again.
Cool. Thank you.
i guess Im randomly asking but does someone know a trick to get back into an instagram account?
I was stupid forgot the login password. I love any help you can offer me!
@Maximilian Garrett instablaster :)
@Logan Mauricio I really appreciate your reply. I found the site on google and im trying it out now.
Looks like it's gonna take a while so I will reply here later with my results.
@Logan Mauricio It worked and I actually got access to my account again. I'm so happy!
Thank you so much you saved my ass !
Thanks mike like how you explain everything ...these are some of the best videos on how to...keep up the good work I gotta know...keep the shiny side up
Thank you.
great job Mike thanks for posting , your like the Bob Ross of motorcycle mechanics ! and thats meant as a compliment
tonysvetts
“We don't make mistakes, just happy little accidents.” ...😁
Thank you.
That's true.
That’s literally how I described him to my dad the other day. Seems like a legit dude.
After watching your videos I feel confident that I can change my valve guide seals. I have the same motor. 98 evo in a road king.
Man I love all your videos ,thanks to you the other mike and Bob that make these. I've got a old 98 road king and a 68 ironhead . All your videos come in so handy.
Cool. Thank you.
You give the best instruction than any shop teacher I ever had. I'm going to find an old hurt Evo an see what kind of trouble I can get in to.
Thank You. Works for me. But, "Worn Out" is much easier than "Hurt."
THANK YOU...for sharing. Watched and very much enjoyed.
Thank you.
You're the Bob Ross of motorcycles. I love your videos.
Thank you.
Thanks Mike for posting
Thank you.
I hope we get to hear this engine run!
Bobby is going to pick it up and install it. I'll have him bring it over and we'll video it running.
I have a 1998 FLHT with 25,000 miles and Im installing ev 27 and wisco 10-1 and killer carb rebuild and thunderheader. This is my second build so I've watched and learned a lot from you. Thanks for the info at a good pace. The cam bearing tool was simple once I watched you a few times.
Sounds like fun to me. Thank You.
Thanks for the videos that you I appreciate all that you're doing. I lost a couple buddies in a motorcycle wreck and I was paralyzed in the process as well. Watching you rebuild your motors brings me out of a rupt since I can't ride no more. My riding buddies were Terry and Rhonda Hatcher. Ride on Mike. 👍👍👍👍👍
Thank You. I wish I could help you. I'm almost finished with the comments this evening. Then, there will be several moments of silence filled with wishes for you and your friends.
Nicely done. Thanks!!
Thank you.
Mike you show real world wrenching small errors you always catch great tips things not always go smooth like when I work on stuff but it all works out keep up the great vids
Thank You. I just put an effort toward srtaying in the real world. I'm just a guy showing stuff, and I hope it's beneficial.
Explained very well Mike,,even the break down of foot pounds to inch pounds,,or vice versa,,may I add still sounds like ya ain't over what ya had,,breathing heavy,still good job and peace
Thank you. The mic is probably too close to my face, and, I'm old.
Detailed! What ya don’t just set that torque and slam it the first time! Not people who pay attention to details. Great work, thank you👍
Thank You.
Thanks Mike Keep up the good work brother. Your a Master no doubt . I'm getting up there myself things I could do last year I forget this year . your videos are a god -sent .
Just a guy who does this stuff. Ain't life grand?
THANKS Mike👍 AWESOME JOB as ALWAYS !👍🙏👌❤😎GOTTA MAKE SURE EVERYTHING is HAPPY😁👌
Thank you. And, HAPPY is the answer.
@@pacificmike9501 👍🙏👌❤😎
You know as I watch you put this evol motor together I must say they're definitely a different animal and a different breed because I've built pretty much all kinds of jap bikes and honestly I don't know nothing about Harleys but I'm willing to learn I've been watching your videos now for 3 days straight cuz I just picked up a Harley electria glide and 84 trying to find a manual feel like I said it's all new to me trying to rebuild this one
Try "V-Twin" for a manual. You will also find them listed at "Tedd Cycle."
very nice series on the evo rebuild. Thanks for making these video's. I would have liked to see your pushrod adjustment procedure.
Okay, next time I set Evo valves. But, the procedure is the same on any of the hydraulic lifter models with adjustable pushrods. Just have to follow the manufacturers recommendations on the amount to extend the pushrods. Don't forgrt to let them bleed down before rotating the engine.
The music stand is a great idea! Great tip!
Thank You.
Thanks for the video Mike. Ive never really played with Evos too much but i think they are the best engine from HD as far as performance and reliability goes. Im a Shovel guy at heart though... ill never sell my Shovel haha
Thank you. I get it.
As always great info 👍. Hopefully Bob has had a second bike to ride during this rebuild 🤔😂😂😂
He does. Thank you.
You are amazing sir , im sean hector son of ted hector the world land speed record holder at bonneville on harley flatheads and indians and i can say you should have been a teacher sir! I love your videos and im glad your feeling better!
Thank You. I'd love to pick your brain on my Flathead project.
@@pacificmike9501 id really like that but i have to tell you my favorites are the late 70s shovelheads and all models of evo's, dont tell my dad! Lol
I won't tell your dad. But, my favorite old roadbike is my 77 Shovelhead I bought new in 1978. But, little by little, I've collected the bikes of my dreams. I love each of them. Now, I need to build my Flathead 80 (UL).
@@pacificmike9501 if its the one in your videos thats the most beautiful shovelhead ive ever seen, i also had a 77 but it was a low rider and the 5 times i got to drive it were well worth the 30 times i worked on it lol
I've worked on mine (that's the one in the videos, thank you) a lot, but then, 400m miles requires quite a bit of maintenance. It's been my test bench for products since Shovelheads were the newest thing out, when I started working in shops. She gets whatever she wants.
That EXPLOSION WAS the NEIGHBORS BBQ 😊😁😂🤣
You don't really wanna know what it was.
@@pacificmike9501 😁👌❤😎
Hi Mike, your videos are super 👍👍👍
Thank You
Nice details
Thanks!
Nice video I love cometic gaskets wish I was in California I’d love to see chopper fest
That would be cool. I'm looking forward to it.
👍👍✌️🇨🇦✌️🇨🇦✌️👍🇨🇦✌️ AWESOME AS ALWAYS THANKS !!!
Thank You.
I could of used your advice in 2003 to 2017 Thanks Mike . I always used SE adjustable push rods they are the same size and I never do them till im done with the top end on my bike , if its staying stock with color pushrods I do it this way .
Whatever works best.
Beautiful
Thank you.
triumph owner here; if harley were smart they would hire you!!
Thank You.
Lol... if a motor has You're dogs hair in it. It must be a Good motor. .. cheers from 8000 mls away in UK
You bet! My dog is way cool.
Hey Mike. I love the informative videos you produce. Got to say, you'd be the go-to man for honest answers concerning EVO engines. Here is a question Ive been pondering. I think I know the answer, just looking for a confirmation. Can EFI be replaced with a carb?
Thank you in advance and God bless you brother.
Thank you and yes. The fuel injection system used on Evos was difficult to diagnose and very few people ever learned them well. The newer injections were much easier to deal with and came out in 2002. To replace the injection system with carburetion is quite involved. Because the injection and the ignition systems are integrated into one system, it all has to be replaced along with the wiring system on the bike. So, you are now installing a carburetor and manifold, an entire ignition system and complete wiring harness. I've done it. It's worth it. It's quite an expense in time and materials, but takes some dedication.
Pacific Mike
Thank you for replying so quickly, I know you are busy. You confirmed my suspicions. I'm gathering information for my next bike build. Since I'm getting old, this will be my last bike so I'm very particular in the way I want it. You are a blessing brother. God bless you always.
Mike, I noticed you don't use air tools, like a 1/4 air ratchet to run down bolts?
I'm not in a hurry.
Hey mike is there two umbrella valves per head? I see u put one on but there was a spot for another
One per head. Same casting used for front and rear, only one hole used in each.
At point 3.30, hilarious!!!
Thank you.
Pacific Mike After watching your great video and seeing a methodical walk-through (we seem to share the same style humor) I might go ahead and purchase those enticing S&S heads bumping up static comp. ratio from 8.5:1 to 8.8:1.
You are a master! I have a question, would this evo 1998 fit in a 1950 panhead frame? I am trying to build a bobber, thanks
No, Evos are much taller and require a taller frame. Sorry 'bout that. Nice compliment. Just an old bike mechanic.
Mike, I pulled heads of and evo with adjustable pushrods and did not touch any of the adjustments on them.I then had the heads surfaced and complete valve job done. So my question is.will I have to readjust these pushrods since I did not mess with any of the adjustments to them
Yes. Take it slow. You've changed the height of the heads. Be sure you do that assembly and reassembly according to the factory service manual. These things are very different than other engines. We do show how to adjust valves and assemble those heads onto the bike.
Good morning Sir I truly enjoy your video's. Would like you're opinion. I just bought a 94 RK and will be doing some work to it. without going crazy would like to do a bolt in cam up grade was thinking woods W6.. And your thoughts on a BDL 2" belt drive, I live in Texas and hoping belt drive would help her run a little cooler. Stay safe Brother
The primary would not have hot oil in it. I don't know that the engine would run any cooler. As far as your cam is concerned, you'll have to read what the cam is intended to do. At what RPM it's going to make its power is dependent upon what you want.
Thanks … hay on bottom oil ring the top and bottom of it where 2 inches apart will that be ok ?
Stagger rings as per specifications in service manual. There is a great diagram in the Evo service manuals. That is what I use.
Hey ,How everyone doing . I have a little problem . What should I when I have a rocker arm is stuck when being installed after I think
Are you sure it is stuck? If so, remove it and inspect for the cause.
Hey Mike Thank You for the instructive video (Bob's-Evo part 11). I found it to be full of valuable information. I bought a used 96 FXST. It has an S&S carb on it. It no longer vents oil vapors into the carb air filter. It has a vent system like my old shovel. The FXST needed some gaskets replaced (rocker boxes). The shop that was helping me closed due to the owners health. The work had been started but not finished. I've got the bike and parts back home. My question is: Do I still need to install the umbrella gasket? I'm stuck no one seems to have a definitive answer. 1) it has a different carb set up and 2) it has a vent hose like the older bikes. What would your educated guess be?
One more quick note the old shovel is running very nice with the Rn,RJ plugs. ThanK you for your videos and advice. Both are Priceless.
Well, it sounds like you're using "early Evo" cases. They vent from the crankcase. It sounds like you're using "late Evo" cylinder heads. You can use both breathing systems. If you don't use the "top breathers," and you have them plugged off, you don't need the umbrella valves. If you choose to leave them open and vent to the air cleaner, or the atmosphere, with hoses, you'll need the umbrella valves.
@@pacificmike9501 The cases are Delkron , the jugs and heads are Harley. T he top breather is blocked off. Than you for your time once again. You are an enormous help too many.
Getting tired of bobby's motor! It's a nice motor LOL..... What manual are you Referencing out of ? Getting ready to do valve job on my 93 EVO MOTOR... Thank you
Harley Davidson Service Manual.
Is there a reason one of the rockers would be tighter than the other one? It doesnt seem bad, but I dont know. Something I noticed putting my motor together. Thank you for teaching me. I appreciate it tremendously.
Thank you. I assume you are speaking of a shovelhead. They all need to be fitted individually. Check your service manual for specifications.
🍻thank you ....... 🍻
Any time!
Pacific Mike I didn’t know a DAM thing about fixing a head gasket... watched your videos ... well it runs like a champ ........🍻really thank you .....🍻🍻
What year motor is that? I’m building a 1990 FXRT evolution. Being a crankcase breather, do I use the umbrella valves?
Thanks a lot for the videos Mike! Helped me along the way a ton!
No, the crankcase breather Harley Evos didn't use umbrella valves and had no provision or use for them.
@@pacificmike9501 thank you very much Mike! And thank you for the fast reply! Your help is appreciated more than you know!
I notice you didn't use lithium grease on the cylinder, head and rocker assembly gaskets is there a reason you don't use it on a evo motor?
I follow the instructions written by the gasket maker.
Great video!! Quick question, I'm rebuilding a 92 Evo which is a bottom breather motor, but came with top breather heads that were plugged with solid breather head bolts from the factory. Would you suggest throwing some umbrella valves in them and running both top and bottom breather?
It sure works well with both systems. I don't know if the heads you're describing are exactly the same.
@@pacificmike9501 from my understanding 1992/1993 is when Harley made the switch form bottom breather to top breather.. 92' was bottom breather but came with heads casted for top breathing, just no umbrella valves and solid bolts.. In 93' Harley eliminated bottom breather and went with top breather only.
@@pacificmike9501 I know the EVO motors are known for base gasket leaks. Any suggestion for when I do my top end? Which gaskets should I be using, etc?
I think that depends on what state the bike was first sold in. It was all about emissions.
You might want to try the steel cometic base gaskets. The big deal really is to start your motor up and let it get warm before hammering on the throttle.
Can I replace the lifters without disassembling the top end? I have solid rods without adjusters.
I need to know what your motor is to answer that question.
After 26 years on a knucklehead, due to spinal problems, i've recently change to a 1984 FXR, with a very early Evo. So now i have to learn this Engine inside out and you'r video is a great Way to start. So here's ny question: what function do the umbrella Valve have. Is it presurre release or just a one way Valve ?
They're just a one way valve on the breathing system. They came in 19992, when the Evo motor became a top breather to exxhale into the carburetor directly from the heads. Something to do with emissions. Prior to that, Evos had case breathers down below like any Harley before that point in time. When I do a big Evo motor with lots of inches, using S&S cases, I employ top breathers and bottom breathers into the atmosphere. This is, of course, "For Offroad Use Only."
Ok thanks, then i dont have mind about it on a -84 Evo. I'm used to the timing case breather. My Evo is so early that is still have the three bolt clutch tree and a secondary chain. Greetings from Denmark.
I want to do mine again it was so much fun for not being a mechanic and my first time doing it almost a year later no leaks and running strong . I was surprised on how basic it was and made me feel great ! If course mine was stock so the push rods where color coated so it made it easier. Love watching you Mike!!
Thank you. And, "Good for you." That's very cool.
Well then, maybe your neighbor has an engine they now need rebuilt lol. i think it's great you pay it forward with Evo's, Knuckles, Pans etc, it's your comfort zone but you're an intelligent man and I think you should try to challenge yourself, venture out into the twin cam era, early years with a carb and timken bottom. Most of the HD's on the road today are TC's and all those people also need a Pacific Mike. Plus, I'm sure another 30K subs couldn't hurt.
It's not just a " comfort zone." I love the way the old motors run. I love the way the old motors sound, feel, smell. and look. The "modern" motors are fine. In fact, I made a living out of them for a long time. But, the dealerships don't work on the old motors and I still love them. I built the Evo motor for a friend and showed it on TH-cam for the people interested. I know there's a lot of them, but my preference is really the older motors.
@@pacificmike9501 Fair enough
Hello MIke, enjoy the videos don't know how many times I repeatedly watch this one:) Is there another rubber seal that goes up into the rocker box hole where the upper lifter tube fits in, other than the one that's on the lifter tube?
No. Just don't over tighten and damage the holes. The top ones, between the boxes can crack at the holes. By the way, if the pushrod tube is leaking, I don't know what year Shovelhead you have. Be sure and use the right seal. Sometimes you need to get a little creative with those tubes.
@@pacificmike9501 I'm sorry, it is an 85 Evolution engine. It seems to fit better without that rubber seal on my finger when I just use the rubber seal on the upper tube for the push rod. I bought a tube/seal kit I think for different models. So I wasn't sure which one was the correct one to use.
Top pushrod seal on an Evo is a fat O-Ring.
@@pacificmike9501 Thank you Mike that worked out nicely. Now the book I have says to put the front cylinder at TDC and I noticed that the rear piston is also high in the cylinder. Can I just the rear cylinder also at this time?
I have an old set of adjustable pushrods that were given to me. They are for a shovel head. Can I use these adjustable rods in my Evo I996 motor?
No, they are way different.
I like the Evo motors. I had one back in the 90s. What is your opinion of the twin cam engine? I have heard that they have more possibilities of trouble compared to Evo or M8 because their flywheel is pressed on and the tensioners are plastic.
Pretty much it. The twin cam requires serious money spent on it.
Mike, how much should I be able to slide the rockers from left to right when they are installed in the rocker box ? I have at the least, 1 rocker that im able to slide it lefy to right more than the other rockers. That causes me to wonder if the lower part of the rocker box ( rocker box inner ) is worn. Or maybe the end of the rocker is worn. Leaving to much clearance, allowing the rocker to slip on the shaft from side to side and knock against the rocker box, at the end of the shaft.
I cant seem to find a specification for this.
Assuming you're working on an Evolution Engine, it's certainly covered in the service manual in section 3, under specifications (go to "rocker arm." Service Wear Limits, go to "rocker arm."
@@pacificmike9501 I did find that specification, Mike. Max clearance, .025 . Mine is within spec. I had also noticed the shaft itself slides left to right, more than all the others. Rough estimate it moves about 3/16 from left to right. That I cant find a spec for. Lol. I have s&s shafts and forged rockers on the way. Im just going to leave it alone for now. Ive decided to jist collect parts ( and tools )until I have everything to pull the entire engine down after the weather gives out in late fall.
Hi Mike Pacific Bob here, 1st i gotta say a huge thanks for putting out such great informative videos. I have a completley original 85 FXR with 43miles on it. She has very quiet running motor although Im giving her a bit of a pep up. EV27cam and new cam bearing, Keith black 9:5-1comp piston kit and new tappets.
Im new to harleys, whats a reasonably priced quality or brand tappet set (or Just go OEM)? The cam says its a drop in install can i just re use my original pushrods? do i need to use any certain type or material rocker box gaskets on the 85 model evo (Cork for example)? With the bump up in compression you think my old starter set up will have trouble? should i look into compression release or higher output starter motor? Doesnt look like much room to install the compression releases on my head.
I don't mean to burst your bubble, but, first off, the original lifters are good for, probably 80 thousand miles, but a good "aftermarket set would probably be better. I suggest a good set of steel adjustable pushrods. The cam you've selected is fine. I don't recommend specific brands. If you're raising your compression, be sure you "clay" the top of them for clearance with your valves opening. That "drop-in" cam is a drop in with a stock motor. Now, you're changing it. A mild cam, a good carburetor, a nice set of free flowing exhaust pipes, a good ignition system, and you'll be amazed how much it will wake up. That 85 cam isn't really that bad either. Here in California, Harleys didn't get bad cams until 1988.
Is there a definitive way to cure the pushrod rubbing the upper tube at the top? .543 lift, stock ratio rockers, S&S quickee adj. pushrods, .030 head gasket. So shorter stack + higher lift = pushrod rubbing. I’ve seen people bore the upper pushrod tube where it meets the head a bit to gain clearance, but before I get after it I’m seeking as much advice as possible.
There are thinner chrome moly pushrods that I've used in the past. I assume you're doing an Evo. Crane made those pushrods and they might be available from S&S now.
@@pacificmike9501 correct it is in fact an evo. For once when I tell the mrs my FXR is almost done she might believe me ! I’ll look into the thinner push rods thank you.
Mike I notice your push rod's are adjustable mine aren't my rear lifter block was leaking change that changed push o Rings can't get rockers back in do I have to pull Head this is not like my knuck or pan Help
The original pushrods in an Evo are non adjustable. The ones in this motor have been changed to aftermarket adjustables. They usually get changed when you change the cam. Now that you are where you are, rotate the engine by hand untill both lifters for the cylinder you're working on are bottomed. The rocker box with its rocker arms should be removed. Pushrods and tubes installed. Rocker boxes can now be replaced with their rocker arms. In removing rocker boxes on Evos, loosen the bolts a little at a time to keep stresses spread out and even. Same thing when reinstalling them. Replace all gaskets. You don't have to pull the head, just the rocker boxes. If you pull the cam, you can do all this stuff from the bottom. You're right, ain't easy.
Hi mike and all the other bikers out there. Does this video cover installing new rocker gaskets?
Im 31, in England and have a leak on the top pots of my 883.
Any and all help and advice welcome
Hello. This stuff is all covered in our videos. Look on our TH-cam homepage under "videos" or "playlists."
Thank you Mike. You are an inspiration to so many and we are very grateful for your videos
Thank You. I hope we covered what you're looking for.
Hey mike long time no watch ive been in the slammer,anyways i thing u are the most best harley mechanic alive, inhave a serious problem my brother died and his father is like 83 years old to ride so he gave me his 1995 fxsts softail springer , its been sitting in a garage since 1995 he put a s&s hyper charger on it,small oil cooler , the works money to him was not and option, im not anyways i drove it home ran great. , now the problems are this i have the click of death , so i installed that cylonoid it fire right up 1 time, but flames were shoting out the ehaust then i died again,1more thing its constantly leakkng gas out of the over flow tupe?is there a way to fix that float leak without takin off all that hard where like hyper charger carb etc, its not tuned. Right either but first i beliieve i have to stop the gas leakin from the over flow, mike man my lady died as well im not in gd shape the only thearaly is takin a long ride can u please givensum advice to put this to rest for ever s.o.s num1 fan
The carburetor should be removed and boiled out. The overflow tube is leaking gas because the float and needle need cleaning, probably the whole fuel system needs cleaning. Fresh fluids. Fresh gasoline. Add a fuel filter.
@@pacificmike9501 thnx partner
@@pacificmike9501 hey mike would u recomend thks set up on the bike inmean the hyper charger the s&s , dmall oil cooler and k belkeve skngle fkre ignitkon trip lights in front etc on fxsts softail kve never seen a hyper charger on a softail
One more thing if that float lroblem gets soved do u think jt will fjre right up? Thnx
Hello, which manual catalogue are you using in this video? I have a similar engine S&S Evo 88 , I need help with.
91 and later evo.
@@pacificmike9501 perfect, it’s an Indian chief 2000 with s&s evo 88ic
What is the name of the manual please?
Or is it only available for shops?
What is the purpose of the Umbrella Valve?
To let air out and not oil, and not take in air. They re a one way valve.
Hey Mike. Just wondering if you had to do any valve work on this project?
Yes, I hand lapped the valves.
what brand gaskets are you using Mike?
This is a set of Cometic gaskets.
We’d love to hear your thoughts on gasket selection. Not just brand but also material, fire rings, where to use gasket sealer and where not to, as well as what kind, greasing o-rings and the whole bit. That could be a video in itself. I’d definitely watch!
Hello I have a 1998 fatboy Recommendations on a good after market cam 😊🖖🏽 thank you
Read all the ads and pick one. The good ads tell you where they're going to make power and what's required for installation
Pacific Mike I’d like power from the get go
I don’t ride much in top rpm 😮
Do you know the manufacturer or part number of the upper rocker box bolts
They are 1/4 x 20 allen head cap screws. Your parts manual or any dealership has the part number. Harley uses a bunch of subcontractors to manufacture parts.
You didn't show how pushrods are calibrated
Go to our TH-cam homepage and tap on the word "playlists." Go to the list that says "Installing a high performance topend onto a 4 5/8 stroker." I think you'll find what you're looking for there.
my friend told me all 4 factory push rods are different lengths on my 1990 evo FXRP is he correct mike ??? he told look out for this ...
The intakes and exhaust are different length from each other. They used to color code them. But that was back in the beginning. If installing a different cam than the original, you need to replace them with adjustables anyway. If reassembling a stock motor, put them back where they came from. The exhausts are longer than the intakes.
@@pacificmike9501 can you make a video on how to adjust the after market adjustable push tubes... or do you have one ???
@18:50 you got confuse ??? on that umbrella valve??? you need a break and have a red bull...you can install the umbrella valve on the wrong side of that head, and my god that engine will smoke like you never seen a engine smoke Haha... this happen in a school for harley Haha... pulled head cover off and guess what the umbrella valve was on the wrong side Haha.... Shane Conley harley master tech on you tube talks about a student that install that rubber valve on the wrong side...
You are so right. Yah, I get a case of the "tireds." And I really prefer my old stuff. I've stayed away from late model bikes for a long time. I just help someone out occasionally. Flatheads through Shovels is where I get my Harley joy. I worked on later stuff until I retired, about ten years ago. I built some very fast twin cams and very fast Evos for people. They loved 'em. And, I made money. I'm going for a thrill ride in the mountains, on my Knucklehead today.
@@pacificmike9501 i to go on a thrill ride with my son and his friends they ride very fast and i try to keep up... you have a great time today...
Hey Mike! I like your torque wrenches! Can I ask what brand they are?
Snap-On.
Pacific Mike
Nice! Thanks!
What kind of gasket did you use between the heads and rocker boxes?
Just a good one, I don't remember.
@@pacificmike9501 lol, ok, thanks man. I love your videos. Keep up the good work!
Mike, what manual are you using in this video?
H.D., somewhere in the nineties.
@@pacificmike9501 when I tighten the oil pump and spent the gear. It seems there to spent good except in one area of the rotation and then it spin easy again. I what to know is this normal?
Do you have a shop I can call to see about rebuilding an evo engine?
No, thank you. I am retired.
Mike where are you. Located
I'm in Southern California and retired. I do not own a shop any more.
@@pacificmike9501 Mike im in Rancho Cucamonga I'm looking for a good Mechanic. I have already been burned for 3 grand. Can you recommend anyone
can you tell me how a hd dry sump oil system works?
It's a little involved. It's in the service manual. Boil it down to a couple of questions.
@@pacificmike9501 how is the oil routed?
mike...more detail please..
Okay. We try.
144 inch pounds is how many ooga ooga"s ?
144 divided by 12=12 foot pounds