Comparing The New Parts to the Originals
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- เผยแพร่เมื่อ 26 ส.ค. 2024
- Continuing the build on this 1997 Evo Fatboy, before installing the new "Megasphere" cylinder heads, pistons, and manifold, let's compare to the originals. These are some very much improved modifications.
I don't own a Evo, still lusting after those heads. Thank you.
Glad you've enjoyed them.
As you should
Living up north, on what seems the far side of the moon, it’s hard to imagine these magical jewels. Just finished having the heads done on my Ironhead. They’re clean, but got nothing like the attention Mackie gave yours!
Looking forward to seeing the rest as it progresses, but feeling a might bit jealous.
Jim waited quite a while for all this stuff. It's his little dream. I'm fortunate to be able to do it for him. DME did supurb.
@@pacificmike9501 and I thank you! The result is amazing.
Long live the Evo
It will.
Thank you for sharing. I'll take a pair to go! The engine will have a bulletproof top end.
Yes, it would.
Stunning, stunning machine work; this is going to be a wonder when it fires. Beautiful.
Thank you very much!
OMG are you spot on.
Can't wait to see this beast going together...
It's coming.
You and me both brother
All I see is improvements. And improved reliability. This makes for a smooth and wonderful ride. Good job.
That is the goal. A nice, long winded, smooth, road bike.
looking forward watching going back together
It's coming.
That’s gonna run
Uh huh.
This comparison does a great job of showing how much work goes into the heads that Dave Mackie Engineering prepares. The improved flow is immediately apparent. Add to that the "mega-sphere" dish in the top of the piston to match the semi-hemispherical chamber the system provides and it is sweet indeed. Thanks again Mike!
Thank you very much!
Beautiful mate!! Can’t wait for that first fire-up.✌️
You and me both!
Thanks mike, I've heard about that ever since i was a kid, but never actually seen it done.
And there it is. Thank You
Mackie does great work, wish now I had gone with him but alas, I went with Branch heads and flat tops with and Andrews EV46 cam. She ran great!
I'll bet she did.
Mike..As always, a tremendous educational video! This type of "info" you dont normally get to see and learn about. We all appreciate your willingness to stop a second..back up.. and create a learning moment. . . . Thank You Sir's, for everyones efforts.
Glad you enjoyed it!
Thanks Pacific Mike and also the owner of the bike Jim👍🏻🔥Great series of videos intricate information I love it
Glad you enjoyed it
@@pacificmike9501 yes sir I enjoyed as well as your other videos , your a natural with TH-cam
Amazing. Thanks for sharing this.
Glad you enjoyed it!
I for one have really enjoyed this tear down/rebuild. I was wondering about what the new valves were made of and if there was any special treatment, such as a 3 angle grind. Keep up the great videos!
Thank You. Yes to all of it. 3 angle seats. Kibblewhite Black Diamond valves.
Good morning Mr Pacific, lovely day we are having here today and with my cup of Joe, perfect way to start the morning. When people mention great artist, we automatically think of Van Gogh or Da Vinci but art is more than just a bunch of people staring at an inert object. In fact, Dave Mackie has proven that not only is his art beautiful to look at but it can physically be enjoyed.
It's always the big names or fabricators that get all the credit when it comes to building a motorcycle but to me the real talent are the ones designing the parts that don't fascinate the everyday joe. Perfectly shaped heads with a matched squish, balanced and trued cranks with almost zero runout, bored and honed jugs with symmetrical deburred cross hatching to maintain film strength, clearance cam chests, perfectly tuned carbs and the list of behind the scenes jobs that wouldn't interest your average consumer but to me, this is where the real magic happens, not the guy who throws an already built 124 in a frame and says "look what I built". Not to take anything away from those fabricators as that is art in itself but it's the heartbeat that you hear, smell and feel when twisting that throttle.
Have a great day day Mike and as always, please take care of yourself.
Wow! I could not have said it better. Thank You
Well said. You do feel it.
👍😊
Hello everyone, thanks for the videos
Thank You
Jim you are one lucky guy. What a friend you have wow.
I could not agree more!
Thank You. It's a two way street.
Good lord, beautiful heads!
Yes they are.
Beautiful work on the heads 👍
Yes. They do awesome work.
Thanks Mike!
Thank You
too much light with the flashlight my man. Glare hides everything on the manifold. Love your videos just the same
Sorry about that. It was too late to go back.
👍😊
Ain't nothing better than more horsepower. Jim that bike is going to get it. Hang on
I think he will.
You are 100% correct.
Wow - Dave is good stuff.
Got out early this morning; run out through pi town and around . 34 tooth pulley working great . I’m running 10 mph faster now at all times than previously. Speedo off 6mph odometer off 9 miles on 50 mi trip . I have dakota digital Speedo recalibrator to be hear tomorrow. I also picked up 3 mpg. Not bad cali gas going up .
Many thanks fer the look at Dave’s magic 👍👌🙏✊🏻
You bet. That's all good stuff.
@@pacificmike9501 ✊🏻👍👌 have good day mike -
Awesome papi.
Thank You
Mike,
Love, Love, love your channel!
I love my'96 RK , as well.
Please touch on the upgrades to the Evos more? Wanted a stroker kit but scared of the thought that the stock cases can crack. Motors are an option.
Please keep them coming. Thanks. God Bless!
Scotty
Thank You. We just touch on whatever I need to touch on.
nice work mike. in my 50 + years of riding, I would have to say evo's are the best motor HD came out with.
Certainly get more miles before performing major work.
@@pacificmike9501 i had road wt men & on their bike 100,000mils was not uncommon
Squash band? Squish band? - these babies come with their own orchestra pit & diner, true gas fired central eating!
(Next week - Jim in orbit - "I told him not to kick it over straight-legged." . . . Have fun you three, love from England : )
Dude! I'll make sure Jim takes your advice. Enjoy your forest. I'm sure it enjoys you. Thank You
This is the 1st time I've actually understood how the machining changes the performance. Thanks did not know about texturing either!
That was a "quickie" explanation. I'm not the scientist. But, I'm glad it helped.
Wow, looking good! Compression ratio? Compression releases needed?
I don't remember, but nothing radical on the c.r. No compression releases.
Looks great what a difference
I think so too! Thank You
Such nice replacements. Looks expensive! I'm thinking of buying a 2003 100th anniversary fatboy with one of those things cam 88s. With 25,000 miles. The FI model. Maybe a better size for me than my sporty
Sounds like fun.
Another great instructional vid, Mike--thank you.
Glad you enjoyed it
😊
That's some serious magic there!!!!
Yes it is.
Never heard before the top end was designed by Porche. Very interesting. Anyone know for sure or have any links to such info? As always thanks for the videos, Mike!
I'm sure you can Google it. Thank You
Thank you
Thank You
Looks good guys! Thanks for sharing!
Thank You
Cya out there on the road my friend!
I'll look forward to it.
🤞😊
Moin Mike, thank you to show us this fine perfekt mashined Heads! What did you expect for gaining horse power an torque? I know, it's a difficult question ;-) But the most power is hidden in the heads :-)
I'm afraid I'm more of a "seat of the pants" kind of guy. You're right. The power is made in the heads. But, with the 4 5/8 stroke in this motor, it should fly. Maybe, at some point, we might put it on a dyno. But, I really don't care. Too much fun is "just enough."
@@pacificmike9501 You are right, if it feels good, it is right! So I' am shure, the bike will rip you the arms of and the rear tyre will beg for mercy, if you guys hit the throttel :-))) I`am just kidding ;-) normal riding wth some extra tork is the best.
Work of art on those heads. Wow!
Yes, they are beautiful.
That original 'stroker' piston wasn't getting close enough to head for quench/squish to work properly.
Nice to see the valve keepers were lined up properly, it's the little seeming insignificant things that make a difference
Thank You.
Amazing improvement on air flow and compression dynamics. Will this improved performance shorten the life of the head compared to the stock heads and valves?
Probably not. Sane riding will really help.
Well you're not going to see Jim out on the road till his bike is put back together.
You never know.
Evo ad infinitum -- Big Twin and Sportsters!
Okay. There are other motors, like mine.
@@pacificmike9501 Yes, indeed. Knuckleheads, Panheads and Shovelheads are all great engines (when assembled properly). Jim's Evo is becoming an entirely different beast! He's gonna be happy! Ride safe -- W
You bet. Thank You.
THANKS
Thank You
Very pretty all this..
Thank You
It’s jewelry!
Thankyou
Thank You
Gonna be sweet! Question, how do you go about seating rings on a rebuild? I’ve heard 100 different opinions...thanks! Mines going together this weekend...
Run the engine through several heat cycles. I don't know what engine you're using. It does differ. If it has cast iron cylinders, retorque after a couple of heat cycles. Aluminum cylinders, no retorquing. Retorque everything else. Ride it sweetly. Up and down the scale. Okay. What engine?
@@pacificmike9501 97XL1200C Evo, honed, new rings, new valves, guides and seals...she was just getting a little tired Mike...
Okay. You don't retorque Evo heads. So just be sweet to her. Don't lug her. Don't wind her tight. Don't overload her. Up and down the scale, stop and go. Do not overheat. After a few hundred miles, take her up gradually. You can feel her breaking in. A 97 XL 1200 likes to go fast, but control yourself.
@@pacificmike9501 Yes it does! Lol Running a Mikuni HSR42 with a 30 tooth front pulley... Thanks bro! New tires and the weather has gotten right here in Mobile, Al! Time to get her back together! Thanks again! Be safe!
You too. Enjoy.
Bro 🤝 thanks 🤝 very nice video 🤝🌹💝🤝🌹👩🔧🙋
Thank you too
HOWDY MIKE,
Compare the 1997 FatBoy ... NEW vs OEM parts
Thanks,
COOP
..................................................
Thank You
Nice 👍
Thanks ✌
Awesome video ty Mike
Thank You. We're continuing this project, step by step.
I like Mike !
Backatcha.
The new exhaust valve looks smaller than stock. Is that an optical illusion?
Yes.
👍🏍
Thank You
Thanks for all the good videos!
But you shining your flashlight on everything made everything less visible in the video.
Sorry about that
@@pacificmike9501 Its all good! Thanks! 😁😁😁
Hey Mikes and Jim! Very interesting to see the internal difference between the heads. I often wondered what people were talking about when "porting and polishing"... now I know! I spoke with you a while ago about a seatpost bushing, with a little "garage engineering" I think I came up with a suitable solution, time will tell! It involved turning down an oem bushing, thanks for the input! So yesterday I was changing the bearings in my swingarm, it's from a 79 fx. I had a swingarm from a '75 fl laying around and was comparing the two. I noticed the shock mounts were farther back on the fx, I guess to lower the bike more? I also noticed a lug on each bottom side of the fl arm, any idea what those are for? Checked the manual and couldn't tell. Thanks Mike, you're the best! Have a great day!
I don't know all of the differences on the swingarms. If you look in the parts books, there's quite a few of them. I know we modified a lot of them. My preference is the early "round" swingarms from 58-72.
I also like the earlier swingarm, thanks for the reply! Keep it up! By far the best channel! I feel like I'm talking to an old friend each time we correspond, THANKS a bunch!!!!
In fact, I guess we're kinda new friends with a common love of Harleys! Is there a way of sending you pics of my build? Assuming you would be interested in seeing them, your input has influenced a very great deal in my projects! Can't thank you enough!
Thank You
Wow! Any personal correspondence can be mailed to:
American V-Twin, Att. Pacific Mike
448 E 4th St.
Beaumont, Ca. 92223
Great video Mike. Did I miss the cam bearing removal, or is that on deck?
Sit tight.
How much were the heads? How can we get in contact to get the same ones?
Look up "Dave Mackie Engineering." They have a website.
Really enjoying this build as I have an Evo. BUT... what happened to the UL?
Getting everything caught up. It's called "life." I'm wanting everything caught up, but, first things first. Jim is an old promise that has to be fulfilled. And, it's cool. I've been having a ball with this project. In the meantime, brackets for Sonia's sidecar, and fix my car. We'll get back on the Flathead soon.
@@pacificmike9501 Great! Not complaining, just curious.
yeah porche did design the head, and more on the evo engine, puzzels me why the Americans could not figgure it out by themselves, before that the Dutch had a head for the shovelhead engine that was a step between the shovelhead and the evo
Thank You. I'm not surprised. But cool information. Porsche's engineering department designs things all over the world.
Just curious how much did it cost to get those heads done up like that with pistons and intake manifold roughly?? Thank you in advance
Dave Mackie Engineering has their own website with all of the information.
Good job.Will there be road tests?( How much power and fuel consumption will increase)
Thank You, and no.
Mike, I also just had the top end freshened up on my V96 Evo. Would you please comment, or show, how much cleaning you do to a nice worked-over top end before assembly? Thanks
Wanna watch me clean? Perfect is clean enough.
Hi Mike. Thank you so much for your great videos!! Please forgive me for this off topic question. Any advice or resources on converting a ‘77 74ci to 80ci. Many thanks in advance!
Yes, The first one I did, was my own in about 1986 or 87. Bore cylinders from 3 7/16 to 3 1/2. Use 1978 or newer HD or aftermarket flywheel set (This is for a 4 1/4" stroke. Now, with all of the necessary parts and work required, it becomes 80 cu. in. Unless you already have the stuff you need, consider a 4 1/2" stroke which will cost you roughly the same and give you 84 cu in with a 3 7/16 bore, or 86 cu. in. with a 3 1/2 " bore.
@@pacificmike9501 Thank you Mike!! You are awesome! I already have cylinders for a 1979 80ci. Could I use these instead of boring out the 74ci cylinders?
Are your old pistons are for sale? Looking for 3.505" (measured at the base of the skirt) for a 4 5/8" stroker set up.
This is all a "set" and belongs to Jim. In doing this operation, we replaced the heads, cylinders, pistons, and manifold. That way, there wouldn't be any more down time than necessary. Everything we removed is pretty much "pristine."
Check with CP pistons in Gardena CA.
Hey mike love the vids I tried looking at Dave mackie engineering website they only seem to offer cams. I’m interested in the mega sphere setup you’re installing in Jim’s scooter. Any info on this would be great. Thanks mike
Isn't there a phone number to call? Dave is retired from working, but I'll bet he'll have a suggestion or two.
I actually emailed them thru their contact button on Monday still haven’t heard back from them. I’m actually starting to think maybe I have a wrong website. But I’m gonna give a call. Didn’t realize he was retired so thanks for that info
Hey mike finally got in touch with Dave mackie engineering and yup he’s not doing anymore machine work. Just cams. Looks like Jim got one of the last on his scooter. Thanks again
Sorry 'bout that. Dave helped me through a bunch of serious go fast builds. Great guy, genius racer and wonderful teacher.
It’s ok he did give me Jeff McCoy and a phone number maybe he could help. Got a good video topic for you. “What’s the best aftermarket parts for Harley”. There’s so much stuff out there it’s hard to wade thru. Anyway thanks again have a great day mike
It is't rocket science thankful when porting & polishing is explained . . I mean they didn't fine tune on the assembly line then . . now with CNC well yes
Most things can be improved over original "assembly line" production. That's what "hot rodding" is all about.
Mike!
Sorry but my question is not related to this video. But I really need your help.
I have a 1975 FLH and it keeps jumping out of first gear. I had the trans rebuilt about 2000 mile ago and then the bike sat for about 10 years. Is it possible that the ratchet lid is the problem?
Before I buy a hole new trans I’d really like to know if I should take it apart and inspect the ratchet top. Thanks in advance Brian.
It's very possible something is wrong with the forks, or the lid or any one thing. Careful inspection with an open service manual should tell you everything you need to know.
Mike what size valves the stock heads have, and the Ported heads use ?
The same, but a much better designed piece
Mike Why not have the original heads machined, …Ported polished, etc.?
We got a pristine original pair and took them in to be done. That way, we avoided the down time. When we had everything ready, Jim brought the bike down and we did it.
Whats the engine in inches?
3 1/2" bore by 4 5/8 stroke equals 89".
@@pacificmike9501 ty
Mike rules
I didn't do that stuff. I had it done. I'm as impressed as you are.
👍😊
SEAFOAM in gas will prevent carbon buildup. Hope yall weigh those pistons and rod assemblies. check rods for trueness.
On that motor, everything was fresh, very low mileage stroker.
And, when we built the stroker, everything in the lower end new, including flywheels, shafts, I-beam rods, pistons. All of it balanced to perfection. We weighed the pistons we've just changed to and the difference is less than miniscule.
Are those Machined OEM Harley heads ? And aren't you concerned that a ten year old lower end is gonna be able to handle all that horse power?
Yes, those started life as stock Harley Davidson Heads. The lower end is still low mileage and has been well cared for and not abused. It is a 4 5/8 setup I had Paul Osborne at Truett and Osborne put together for me before I assembled it into Jim's original cases.
Could see better without the light
Yah, and it would take too long to apologize to everyone and reshoot it. You can find it on the "Dave Mackie Engineering" website.
@@pacificmike9501 thank you
👍😊
Pourquoi vous ne traduise pas en francais
We do translate. I just translated your comment.