670 Predator Mud Motor | Rebuild and mods for more speed!
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- เผยแพร่เมื่อ 12 มิ.ย. 2024
- 670 Predator Mud Motor | Rebuild and mods for more speed!
In this video we are going to diagnose and rebuild my 670 Predator mud motor that I caught on fire in the last video! We are also going to do some performance mods to get this Harbor Freight 670 Predator running with more speed. Follow along as we install a ton of upgraded parts from Performance670.com and make this 670 Predator roar! As always don't forget to stick around to the end of the video for the hater's corner and lots of funny bloopers!
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Even though I doubt I would ever buy a Mud Motor I still love watching your videos
A business card is how everybody, including professionals set the coil gap that I know of... So the way you did it is just fine and dandy...
That's how you earn a sub: entertaining, direct, clear editing, and bonus if I learn something!
I have been thinking about getting a John boat and a mud motor to get back to the fishing hole for a while now. Thank you for all the tips and tricks.😊
Lol! I liked that simulated engine sound you made when you was pulling on the throttle.. Crazy stuff I do also..And that s**t eatin grin you had when that monster was really running..another great video! Please keep um coming👍
HAA HAAA... I felt my simulated engine revs were pretty accurate. LOL. Many more videos on the way. We got to get this monster in the water soon!
Liked the work in the motor. Had a 9HP Go-devil for years! Upgraded a few times. After watching I miss my old long tail and I want to change to Mikuni Carb on my Pro-drive. More POWER BABY! Mine runs 4,250 or so fully loaded. When you get yours wired come help me! I will show you some places in Alabama to run MM!
Heck yeah man! I need some places to go ride, all we got here in GA is shallow sandy water and little bit of mud,
This guy is frickin great he speaks the truth and nothing else😂 (will be back to see new vids love the content)
Thanks Lem! Somebody gotta say it... might as well be me! LOL
@@SendItJonBoats LOL I love it😂
Great video, nicely done! An outer filter cover will help with keeping water out in case you get caught in some rain. I think they are $10-$15. I look forward to seeing how that hopped up Predator performs on the water....
I have the outer filter cover, just forgot to install it for the video. Will have an update video soon, first test run was a bust, something was going on with the battery and fuel, maybe the pump. We are getting it sorted out and will be back out testing it again soon. I would like to see over 30mph with the mods.
Im counting the days till my warrenty goes out so i can hotrod it a little love you're build videos man
Nice... I voided the warranty first day. Took it out of the box and started ripping stuff off. LOL
Im definitely doing this! Thanks bro
It was worth the time and effort. I really like it.
Man, you kept me laughing throughout the video! You earned a subscriber, buddy!
Awesome, thank you! Glad you enjoyed
Subscribed when I heard you where making the engine noises while installing the carb.... I like this.
Thanks for the sub! LOL. I like to make funny noises sometimes.
Cool stuff man!!!
Thank you sir! Glad you enjoyed the video.
screamin n cussin is needed when ur tryna get that big block chevy sound outta these and there more governed than north korea
HA HA HAAAAAAA that was aweome! You are my hero for the rest of the day!
@@SendItJonBoats 😂
That sounds sweet!
Thanks Tom. I really like the deep sound, was a great purchase.
Motor sounds good
It sounded amazing in person. My neighbor thought I bought a new harley, so he came over to see it.
Out of all the content on your channel, the moment you added the Dino juice and fired that lawnmower up was the moment I realized I need a boat.
Something about a clapped out lawn mower engine really gets me going.
Welp love it and subscribed 😂
Sounds mean! Great video
It is insane in person, sounds like a freakin harley on steroids.
🤘 Love your torque specs 🤘
I like to get real technical... muuuuureughhhhh... Right there!
Lol for real you out there. Bon temps rouler mais 👍🏻👍🏻
Dude you some kind of special lol 👍🏻👍🏻
It would be cool to get that air filter facing the other way but this is cool as hell lol
Yeah I wish I could turn it around but it wouldn't work. I even thought about putting a 90 degree tube on there to get it up away from the exhaust, but it seems to be working fine.
Enjoyed your video, just subscribed.👍👍💯
Awesome, thank you!
Dude your awesome 👌 👏 👍
G'day great video mate. No politicians in my engine 😂🤣😂🤣😂🤣
Bye Bye politicians! Yee Yee!
"I'm your scooterbarry" 😂😂
LMAO. I laughed way too hard at that.
Keep kicking Azzaro brother 💪 🙏 hahahah love it
“Egg roll land” instantly subscribed
Sweet brother... nice
Thank you Mark. Appreciate you checking out the video.
Your motor build was awesome! I'm building a yamaha 3 cylinder 2 stroke 25 hp into a beast! It's going on a 1554 prop tunnel. Still looking for the hull but I have the motor! I wish I could post pictures on TH-cam because it's pretty sexy!
You know just enough to get hurt……I like it!
It is only fun when it is dangerous
@@SendItJonBoats Yes Sir!
Cool motor
Thanks
LMFAO dude you are too much so entertaining awesome shit......
Thanks Wilson! Gotta keep the laughs going, life is too short not to have fun!
That sounds nasty! Oh damn.
I love that exhaust
Nice video bud
Thanks Christopher. Can't wait to get this bad boy on the water
Btw big brain idea with the scotch bright
Yeah man, get em clean baby!
Sand that flywheel it will help your spark be hotter....at least another 30hp maybe 40hp. Another great video man!
I cleaned it up some before I put the cover back on. I may need to bust out the sand paper if I can get another 30hp out of it! LOL
Just a little technical clarification. So long as the rust isn't so thick that you can't turn the flywheel, sanding the rust off the magnets doesn't do anything for the modern electronic ignitions.
Setting the proper gap between the coil legs and the flywheel is important though. It should be set to prexactly one business card thousandths.
(Please Note: Actual specs for the Harbor Davidson
670cc V-Twin Engine are:
Flywheel/Ignition Coil Gap:
0.0015" - 0.0018"
Intake Valve Lash:
0.005" - 0.007"
Exhaust Valve Lash:
0.007" - 0.009"
@@bob2161 I glad someone knows the correct cap, I looked around and found a million different suggestions.
@@SendItJonBoatsGreetings, this message is for Mr. It.
Mr. Send It, I was reviewing my previous comment, and thought I had screwed up, but actually, I was mistaken.
THE COIL GAP OF 0.040" IS WRONG! I don't even know which hole I pulled that number out of. (The 1 business card thousandths is correct though.)
It will probably (maybe) run at 0.040" but there's a good chance you'll be leaving a good bit of whoop ass still in the can.
I'm including the correct coil gap and valve lash numbers below. I'm also correcting my previous comment. Goodness knows I don't want to be creating any more than my fair share of confusion. Please accept my, ever so humble, apologies.
Flywheel/Ignition Coil Gap:
0.0015" - 0.0018"
Intake Valve Lash:
0.005" - 0.007"
Exhaust Valve Lash:
0.007" - 0.009"
I'm still working on tracking down the timing and frequency settings for the canooter valve modulator, and the torque specs on the nuzzler bearing. I'll have that to you forthwith and post haste. Eventually.
@@SendItJonBoats Sorry about the delay. I got involved with another project . . . I'm sure you know how that goes.
Determining Proper Settings for Canooter Brand Valve Modulation Units.
(Specifications included are for the analog series of Canooters. Specifications for the digital versions are not included.)
Canooter brand modulators are considered to be the "Gold Standard" for valve control in attenuator and filter valve modulation applications. The robustness and longevity of these units means it is not uncommon for Canooter units to be handed down from one generation to the next. We are quite proud of this legacy.
Today though, most of the high end modern units are digital, and are pretty much plug'n'play. They are programmed to function in a wide range of applications. The programs include algorithmic diagnostics that control the automatic setting adjustment parameters. Thanks to this kind of forward thinking by the Canooter brand design engineering department, retrograde deficiency errors or failures are practically unheard of. This reliability has lead to the exclusive use of Canooter brand modulators throughout the entire dilithium mining and processing industry.
We are proud and honored to be recognized and trusted by this important industry.
However, we realize that we would have never obtained such an achievement if it were not for the longtime support we have enjoyed from our millions of individual owners.
Most smaller or independent operators continue to use the older, simpler, analog units. These analog Canooters have long been praised for their "Set it and forget it" ease of use.
Of course, after enough time and use, even these analog units will need to be recalibrated.
We offer the most advanced Canooter diagnostic tools available. These are used extensively by the dilithium mining and processing companies. However, this caliber of recalibration instruments are financially out of reach of the small independent operator.
To address this inequity, we have continued to offer our older analog meters. These are the kind that the "Little Guys" can afford and use, while still having great results.
Just follow the simple instructions below, and you can be confident that your old Canooter will be right back to original factory calibration, and will perform at peak efficiency. Once recalibrated and reinstalled, your Canooter brand modulator will give you many more years of trouble free service.
First, locate and remove the turbo fantabulator unit from your machine. NOTE: Turbo fantabulator units are most often installed in close proximity to the primary recipitory bearing trunnions.
Second, secure your turbo fantabulator to the bench. NOTE: Extreme care should be exercised while securing the turbo fantabulator in order to avoid damage to the secondary wobble vane assembly.
Third, separate the Canooter from the turbo fantabulator housing. Remove any refractory debris that may have collected in the Canooters inlet port bypass chamber. (Remember that all refractory debris should be handled and disposed of according to the biohazard protocols applicable to your region.)
Fourth, securely connect your Canooter brand analog recalibration meter to the cleaned inlet port bypass chamber. NOTE: Insure the recalibration meter is in an upright position. If the meter is leaning, it will bias the results of the recalibration process. It is especially important that your meter does not lean to the left. Operating your Canooter unit when adjusted to specifications of a left leaning meter will result in a catastrophic failure. It is reccomended that left leaning bias be avoided.
Fifth: prepare the face of a two pound hammer with a wedge of fresh lemon. (Rubberbands may be neccessary to secure the lemon wedge firmly in place.)
Sixth: Using the bottom of the hammer handle (in the same fashion you would while installing a piston into a cylinder), tap the Canooter modulator output shaft. Continue tapping the shaft until the TLAR* indication is clearly displayed on the meter.
Congratulations, you have successfully recalibrated your Canooter valve modulator. Reinstall all components, reverse order from removal. You can expect top performance from your machine, as well as an increase in fishing yields and the reversal of any male pattern baldness being experienced by you or close fishing buddies.
*TLAR = That Looks About Right
I basically built the same thing with billet rods in the Pistons in performance 670 cam I use their roller rockers and they’re shorter pushrods cause I had the head smelled but I’m getting a tick and sound. Sounds like it’s coming from the cam gear. Does that sound like it’s the motor you built does it sound like it’s got a lift or tick
Scooter here can't believe you went from the bottle to the can in the Haters Corner beverage holder! Hate it! 😏
Ol scooter always gotta hate! LOL Someone has to clean out the fridge and make room for the summer beer!
Maximum Full Send!
Oh we gonna send it! Cant wait to see how fast this one goes.
I love your torque setting.... hgggg right there. Nice. Straight hillbilly
You can use a drill press if you have one to compress the springs.
You should turbocharge one of these things. That would be sick. I’ve seen other people do it but I’ve never seen them put it on a boat. Now that I think about it there’s probably a reason you wouldn’t want that on a boat but it would still be sick.
Turbos, superchargers, and nitrous is coming.... just trying to get some of these easier builds out of the way first.
I did it bro noice vid
Sweet! YEE YEE!
Ordered me some of those 12.5 hp gain per oil filter. I need a few of those on my truck.😉 Removed the governor but not gonna run over 5K rpms? Motor sounds great.
Yeah I am going to keep it under 5k until I get the new cam and billet parts. Really don't want to have watch a rod go through the side of the block.
Got a question I did the 670 performance carb upgrade and I’m having trouble finding a throttle lever that works what did you end up using
GEAUX TIGERS!
I commend you for not using billet! I think its a lot of extra work and money and the v-twins are already enough dinero to begin with. One issue with the carb: V-twins have weird timing and a single carb/single exhaust often don't resonate correctly, leading to uneven fuel mix & performance between the cylinders. 2 cheap carbs are often better than one expensive one. Same for mufflers, that way you can get each bank to run right individually.
Good info thanks for sharing. I probably will never go bullet on this engine, I never turn it up past 5k rpms anyway
Where do I find one of those snazzy t-handled torque wrench tools? Do I have to buy individual tools for each metric size; or do they interchangeable hex keys?
Nice video.
I got them at Harbor freight, comes with a full set of metric and standard.
Man I just wish that exhaust pointed back so you wouldn’t hear it quite as much driving it, but it does sound awesome
Yeah, it aint bad and I am sure he could make them point back if you wanted.
bro I bought a bass boat the motor is old and crusty don't run half the time so this is the answer to my problem also the Corona fishers like you said pressure so I need to find new fishing out in the pucker brush Thank You.
Heck yeah man, I love finding new hidden fishing spots.
An hour of run time and running the heck out of it! What happened to break-in time? I went the recommended 20 hrs, it never hit more than 3/4 rpm. Nice warm ups Pryor to working it reasonably! Now I work it hard, no fires or issues!
It was already broke in for about 30 hours before I tore it down, and I did not remove the pistons, rods, or crank so it will be fine. That thing will rev to 9k rpm if I let it, those little blips on the throttle were about 4k rpms so no where near damage range.
18:23 👀 WOAH!!!!!
Yeah babyyyyyy!!!!! Let er rip tater chip!
Gosh, that's a real nice-sounding exhaust. Do you ever oil those air filters, like on a dirtbike?
I think you are supposed to oil them... but this guy aint got time for all that. Not much dust out on the river for me to worry about.
@@SendItJonBoats it helps with water as well
Nice!!!! We haven't done a vtwin build yet. A 670 without politicians has to be 🔥. Hopefully not literally this time 🤣. #azspamcan is a handful with just a built gx200 in it for 10fter. I'm excited for this one.
Hopefully I can get it dialed in and get some video of it running soon.
sweet
Thanks Big Rick!
How are your push rods holding up since you kept them stock but upgraded to heavier valve springs? Would you recommend upgrading to steel push rods?
No issues as of yet, but I plan on getting a new cam soon, so I do a break down of the engine and see how everything looks now that it has hours on it.
Geaux tigers!
That is how we use to do our racing go-cart Briggs motors..We. ran alcohol though..
I want to do an alcohol motor soon. Got to get this one figured out first and see where it goes from there.
Could you flip the adapter and turn the carb around
omg........lol you started that and it's like a muscle car..lol I have the same engine and it sounds like.. "the land of egg roll, rice burners".....
LMAO yeah that muffler is freakin awesome.
What size motor is needed/recommended for a 1648 flatbottom ? Surface drive kit.
22hp minimum!
Hey man! I have a 14ft boat and I’m looking to get either the 420cc or the 459cc max. Do you think it would be a better idea to get the 459cc since it is supposed to be a better motor or get the 420 and upgrade it? Also the 420 has the electric start and the 459 does not, do you think an electric start along with the pull start is ideal?
bigger is always better. They do not have a lot of aftermarket accessories yet but they will after time. I prefer the electric start because I am fat an lazy
No fuel pump?And what did you do with the crankcase hose?Thanks
yes I am running an electric fuel pump. I just left the hoses from the crank case and let them hang
I have good luck using dollar store toothpaste for valve lapping. Original white toothpaste without the flavor gel stuff. Obviously not the best but for cheap motors it gets the job done.
Thats a good idea, never tired that.
I just did my transom with plywood
Cool thanks for watching.
I need an update on how these mods improved the performance!! Want to do these exact same thing to my 670.
Working out a fuel issue now. Hope to have it back on the water for a follow up video very soon.
@@SendItJonBoats yes! Love your content btw. Been building my duck boat for a while, lots of good info on your page.
Geaux Tigers!
Yee Yee Geaux Tigers!!!!!!!!
The land of sweet and sour chicken lmao
I wanna see it run with that long tail!
Just did a video on it. ran great once I got the fuel pump issue fixed.
@@SendItJonBoats sweet! Can’t wait to check it out!
Scooter should keep he’s thoughts in his parents basement
LoL. Scooter can't help it that his brain is mashed potatoes... but somebody gotta call him out!
My predator makes plenty of power but I would like to make it quieter so will a car muffler tame the roar?
The stock muffler is about as quiet as it gets. You could add an additional muffler but I have never tried that. I wonder if it would choke the airflow down too much.
@@SendItJonBoats yup that is the issue I'm in Louisiana and sometimes I want to keep stealth to get close to gators but I want the power and above all I don't want to hurt reliability,a little slower is something that can be lived with
Great work!! Do you know if Jeff still makes the exhaust? Don’t want to blow up his inbox with unicorns ifs he’s not anymore. Looking to purchase one and want something different other than the backwater performance exhaust.
Yes sir he still is. Good dude and I still love my exhaust.
@@SendItJonBoats Awesome. Thanks for replying. Any chance you can send me his Facebook link again. The one attached to the video wasn’t working for me. And when search his name a ton of people came up.
Thanks again.
do you know where i can get a new right cylinder head with bolts?
Maybe ebay, or one of the facebook groups.
Hey fella, them cams are back at performance670
Yay! I need to get one.
They’re about $200 more now.
dang... what the f#ck!!!! Inflation is retarded right now.
Now I want to try spaghetti and peanut butter.
It's pretty good. Like dipping a twinkie in hot sauce!
What do you know about the mud skipper motor? Is it a Honda knock off? Going to make a purchase soon. Thank you YEE YEE
Got a video all about it...I know all about them. Check out my mud motor review and comparison video and you will know all about it too.
Remember if it’s leaking oil it’s got oil
It's just sweating torque
Very good point... It's better when it's nice and slippery from the leaks.
I see this build and video would be totally impossible without Amazon.
Yes... without Amazon my world would melt, the planets would be mis-aligned, and aliens would transcend to the rivers of earth and turn all the fish into cross eyed albino squirrels with mermaid fins! So yeah go buy some amazon products so I can make 3 cents.
@@SendItJonBoats no dought it would
Never caught on fire yet, but have had; hull holes, paint gouges, lost anchors, busted trolling motor shafts, chewed up props, screaming smokey tires on the ramp, Rubbermaid totes splitting open because stuffed too full of carp with arrow holes in em, tangled string leading to lost arrow (2 times), fall in water (she was driving), snake fall in boat, snaked chopped to pieces in boat, slashes in boat floor cause by killing snake. Again no fires but I certainly do SEND IT!
HOLYFNSNICKERDOODLES BATMAN!!!!! That's a lot of tragedy in one boat. You should write a book about it.
Egg roll land lol
Some people call it China... I call it egg roll land, or the place where all the tools at Harbor Freight are made LOL. I still love Harbor Freight though.
@@SendItJonBoats same here. Some stuff there is really good, like those 10 dollar angle grinders
@@johncarlberg4481 I love my harbor freight stuff, I just got all new Bauer cordless tools and I am really impressed.
I tried to get that exhaust but he never responded so could you maybe help me because I really like that exhaust and would love one
Apparently he has stopped making them because he aint respoinding to people. I will see what I can do to start making them.
@@SendItJonBoats thanks I got someone who nows him personally and he got me is number thanks though but I’m having a problem with my motor we’re when I run full speed it kill but if I pump gas in to it it doesn’t what should I get to fix that. Thanks for responding to me
What size carb did you go with?
34mm mikuni. Works really well so far.
Real men dont wear rubber gloves! 🤘😁
That's not what your proctologist told me!
I’ve been researching mods for my 23 vanguard and what I’ve realized is I need to swap it for a predator
Where’d you get that exhaust
I spent 3 minutes in the video talking about where I got it and left a link in the description.
pulse pump diaphragm may have ruptured allowing raw fuel to be sucked in straight to the crankcase.....something to be mindful of
ผมชอบครับ...💘💘💘👍👍👍🙏🙏🙏
👍
What carburetor did you use
Mikuni 34
I don't like politicians in my motor! 🤣🤣🤣
Gotta get those politicians out of there. Use that space for some more horses.
Besides, it's easier to clean up after horses than trying to clean up after politicians.
Dang politicians got to go!!!! Bye Bye!!!
You are correct Bob.... hate cleaning up after politicians!
My biggest question is why would the snap on dealer have any reaction to this project? The only thing mine really cares about is when I buy a toolbox from the Matco truck instead of his. Lol
LOL, I paid of my debts at the rape van (snap on truck) years ago... I refuse to get back on there now. I buy all my tools from Harbor Freight because I am cheap LOL
wondering if a 35hp surface drive would be do able on my 14ft Jon boat?
Anything is doable once!!! I would do it.
Freakin send it and send me some video.
yep. that carb adapter torque spec is exactly 1 ugga dugga
I almost said it was .875 ugga dugga but wasn't sure if everyone would know what I was talking about.
@@SendItJonBoats bahhaha, next time lol
Daría mi mano izquierda por un motor de esos aún si fuera solamente el motor yo le contruiria la transmisión
Are you running a factory cam?
Yes, I talked about that in the video toward the end. Aftermarket cam will come later.
@@SendItJonBoats sorry I missed that. I’ve got all the parts I need except the cam. They’re saying mid summer.
Getting my float pods welded on today. I replaced my 13 hp engine with the 670, and I installed Harley sportster pipes on mine and took the baffles out. Sounds pretty wicked!
@@SendItJonBoats yes sir. I’ll post a vid soon, getting pods welded on the back of it.
How much you charge to build one?
Depends on what you want done. Contact me with what you want chris@tbnoutdoors.net
12.5 hp gain just switching out the oil filter lol
Thats what the guy at auto zone told me... so it must be true. I can tell a huge difference, might even be 13 hp gain.
Sir, can you please on the next time you use a growl as a reference of torque assimilate a number based on the intensity of the growl so we can make a better reference to try to replicate it.
Does any one know what flywheel this dudule used?
He didn't. Stock flywheel
@@SendItJonBoats Thanks for the info!