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Double Displacement Mini Bike Swap! | Honda CT70 140cc Swap
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- Опубліковано 15 тра 2018
- After riding restored and modified Honda Trail 70s in Texas, I knew I had to immediately upgrade my 72cc stock engine. We take the high output 140cc 4 speed engine off of the mini ATV, and shoehorn it onto the CT70. It was a tricky swap, because the 140 is physically larger than the stock engine.
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It can only get better from here. A new exhaust and a air filter and the right gearing will get you in the 65mph ballpark. Great job once again fellas
Valve adjustment on the gold one is in order.
Put a performance 212 on the mini four wheeler with a torqe converter
My 125 (4 stroke) dirt bike has broken 60 before. Now it did have a 5 speed with a larger front sprocket, but I think this thing can do 60.
A bigger header and muffler will help your flow but the best mod to these engines is a Mikuni VM26 carb and manifold. Threw that on my piranha 140 and the bike totally woke up. Guessing your carb is a VM22 which is a touch small for a 140 .
I love your camera transitions. They’re a cool little touch that you could just simply cut to next footage but you guys jazz it up. Great channel with great content and great guys doing it. I also love that I can watch it with my kids in earshot and not worry about a constant stream of obscenities. Great work fellas.
Me too. No kids but hearing cuss words over and over gets annoying!
The lack of obscenities is very refreshing after watching all the foul mouthed UA-camrs out there.
I never expected this but I'm ecstatic it has been done and it's even cooler when your favorite UA-cam channel does it... These are the projects that really peak my interest... Stay awesome guys
I love the transitions you do in these videos haha, there clean and cool
I absolutely love the thought and logic behind “ I wanna see how much we can get out of the 670 before it blows up” you guys are awesome
We had one on the farm . Chrome fenders, blue ...I think it was a 71.Abused, pinned all the time, ditch jumping with me and two other buddies on that cushy banana seat . Did about 45 mph on a good day. Loved the speedo and folding bars to get under fences. Bullet proof 👍
@ 17:59 forget the Isle of Man race ... this is exciting road racing right here
stickloaf
Doin the ton...
Amazing the trailer carrying their balls behind the bikes don’t fly off in the tulies
Isle of Man is insanity. Watching helmet cams of that makes my butthole chew holes in my pretty pink panties.
Totally wicked as always guys been loving the builds and content since i started following the channel from the first iteration of the turbo drift trike
Per usual, awesome and varied content with great editing!!!
Very interesting love the early 70’s nostalgia with this bike 🏍 leaves Grom lurking in as in a classic little bike !
ct70's are my childhood! and my favorite bikes of all time!
I'm glad I got to meet you guys and even got to sit on the 2 engine minibike! It was awesome. Now I can brag about y'all!
Gas_And_Go sweet
Thanks guys another fun video and cant wait to see what that thing does when you open it up..
It tops out at 52 MPH- I think an exhaust alone should get it to 60. It just seems to run out of breath at high RPM. Anybody out there have experience with these engines?
CarsandCameras try changing the jets that might work
Is there any way to rotate the carb so it can point forward? Or have a small piece of 180 degree tubing to point the intake towards the front.
A little bit of ram air and better exhaust should help that motor breathe efficiently at higher rippums.
Lj Saldana no need for a front facing intake on those engines
CarsandCameras need to rejet and get a better cdi
Just change the jets and get a racing cdi
Taking time out to help your old teacher shows great things character, guys!!
ah the video is over already dang. I like these upgrades and playing around on the bikes with different combos to see what works better. Thanks for the video.
shartne thanks for watching
Wow you guys have been .aking some great content keep it up!
Thanks man
I just rebuilt a set of four of those rfy shocks about a week ago. It is HIGHLY recommended that they be rebuilt and properly filled with oil. If you remove the spring and cycle the piston, you'll quickly find that they are only half full of oil.
You should either rebuild them yourselves and make a standalone video on it since there aren't any out there, or I'd be happy to rebuild them for you for the cost of shipping. If you do the work yourself, I'd answer any questions about the work you have.
I love your videos. You guys keep up the good work. 👍
Ike had me cracking up with the "Monicaaaaaa!" 😂😂😂
Love your guys vids, keep it up!
I'm watching you on TV in beef o Brady's right now! Congrats guys! Ur on live TV!
you guys are the balls I need you guys to make me forget about lifes stresses and realize it I'll be fine lol
Super awesome video I love the CT70 they're super awesome love the video 👍👍👍👍💪💪💪👌👌👌
John's so close with his old teachers. A lot of respect kudos to you sir Hope she's ok heart attack's are scary.
I love watching you guys. Love the 140 swap. missed you in Texas. I'm in Houston. even on mini bikes I wish you guys would wear protection. It's hot I wear icon Stryker body armor vest and gloves. riders look out for other riders no matter the size the bike. can't wait for the next video. be safe
That editing lol loving it.
That is crazy fast. You may want to change or brace those handlebars to make it a bit stronger.
It has been a couple months...
I still need one of these in my life.
Hey John! Pirhanna makes a 140 HO with aux output. You can find it at tbolt usa if youre interested! Love your videos guys!
you have massive gearing on that little engine. a 17 tooth on the front with a small rear cog is crazy.
Hahahahahahaha when John sat on the bike after he put the new shocks on I laughed out loud at work!
I had a set of shocks like this and they were too stiff and i found letting the air pressure out helped
Your first video, gave me the itch to get one, gotta find a good deal so where here in AZ or CA
Those Fox shocks are really cool. Love those old CT70s. I wish Honda would do a re-release of those. I’d much rather have one of those than a hyofung or whatever type of mini bike. Thanks for the video guys. I enjoy watching them.
Good show fellas!
Omg. I love that house and yard !! So cool to be able to ride around on your own beautiful property. Is that some kinda bike path or a private road? UA-cam must be paying some serious dividends. 👍
Its Johns parents house lol he still lives at home
Cb440 rear shocks work as well. I use them on my ct110 and they are perfect for off road.
At Steele's cycle salvage in Colorado they have a mountain of those frames I also had a CT70 and I had a trailed 90 4 speed automatic with the high low transfer and I put that motor on my CT70 that was nice
notification squad where you at!!!!! love it
I like the new shocks!
Lots of experience with these engines ! Take a 26mm mikuni with big bore exhaust and freeflow muffler, it'll make noise but will improve your performance alot.. After this you could maybe look for a z40 camshaft kit..
what a nice thing to start my morning too
happy faces
You guys should put some café racer type handlebars and low side mount mirrors on those. Great video.
Everyone always hates on small stuff like this, but they can go anyplace. Fit in the trunk of a car and are a blasty, blast to ride. Also the fuel economy is amazing and registration and insurance is cheap as all get out. I love sport bikes, Harleys and Dirt bikes as well, But for the money its an amazing experience. I had a ct70 in the 90s and it was so much fun. Also repop ct70's are even cheaper.
RFY SHOCKS REPRESENT! I have a pair of those on my '78 CX500. Can't beat the price.
Ike gave you a little crop dusting!! That's what friends are for lol!
You guys listened... Thank-you!😊
Love the content.
Ike, were are your drifts. Lots of nice snappy tools.
I fitted Bilstien PS9 Adjustable Coilovers to my Porsche Boxster S and I am almost also thinking it a mistake. Even on the tallest hight setting, softest bump and rebound settings, it is a little harsh for my back/ spine, kidneys, fibromyalgia ect. John, don't feel bad. You are not alone an installing too harsh a shock. Cheers mate.
Love the swap! With a bigger engine, can you enlarge the diameter of your tires for smoother ride off road and higher topend?
That laugh IKE made when you said you don't want the tire coming off the ground lmao
With that exhaust fixed and some carb ajustments, its gonna fly!
You can trade some torque for speed with different sprockets. I've not ridden it though so it might be in a sweet spot as is.
Man i got one of these in a bucket when i was 17 and knew nothing about engines. Whole thing was in pieces and beyond my skill level. Wish i woulda known more wbout it i coulda built it for my brother as a graduation present since i can't ride on acount of being wheelchair bound
I'll take those old shocks ;) Man I still need to find a mini bike without with the engine so I can put mine on it...
i have a 150 cc 4speed standard shift and has electric start and charging and i`m using the 18 tooth engine sprocket and the smallest rear sprocket available and mine runs 63 mph i tried those rear shocks you have and those made mine too scary to ride ,and it runs great on regular gas. i also put a dack front fork on it with twin disc brakes.
like the things you guy's are doing
a larger front sprocket and a smaller back sprocket will make the bike go faster but it will decrease the acceleration. to fit the exhaust restriction on the cheap, you could cut the baffles out where the pipe goes bigger then weld it up after, i did this on my aprillia sx50 and it was choked up of fumes and burnt stuff,its only done 9000 miles so the quad bike exhaust wont be as bad, it looks a good project and would look great with silver suspension like Ike said :)
We basically did the 140 quad but did it nicely. Scared me to see how dangerous yours was. 😂
I love when he says it may be too much power and I just in the background really loud HAAAAA
Ive enjoyed watching your ct70 builds. How do you like the beefier rear shocks on there? Are they too stiff for a 135lb rider?
Wish I could has seen you. Un fortunately I was having surgery. I'll be there next year!!
OG T.E.K 145 Get well soon!!
Could easily hook a battery up somewhere for the lights, just make sure to charge it while not on the road. Loads of guys do that with modded Colemans
Just bought a ct90 with a atc110 engine swapped into it, same problem with the lights, I didn't realize the engine was swapped when I bought it
It doesn't make it ILLEGAL... it makes it a MOTORCYCLE. You just have to get it plated. Also, those RFY shocks are awesome. I've used them many times.
it's already plated. he meant that since the lights wouldn't work with that engine that makes it illegal.
CT70's are street legal motorcycles.
OH, thanks for clearing that up guys! I didn't catch the lighting part, I thought he was concerned about the engine size being over the "moped" limit in the state.
Driving without headlights/taillights is ILLEGAL. Turn signals are optional depending on your state. So yes, it would make it ILLEGAL to ride on the road.
Only illegal at night. Motorcycles can use hand signals during the day
I like the driving vlog thing
Will you be willing to do a full rebuild video of the ct70 of johns or ikes at some point so we can get to see how the internals work?
Is isaac ok?..he seems kinda bummed out or something??..just curious if hes good!?..awesome video guys..cant wait for more
The main reason for the speed difference is the internal gear ratios on the 140 were intended for an offroad low speed application where the ct70 engines internal gearing was intended for road use, you gotta remember that the transmissions have different ratios, the sprockets on the outside dont always mean faster as a result
Should just give up on a four wheeler frame and cannibalize it for all the good parts for the next crazy build👍😎🏁🏁🏁🏁🏁
T-bolt USA sells the 150 that has e-start engine and charging coil
I don't see many if any CT70's in Australia, however, many Honda CT110's, as they are used by Australia Post, as their go to standard letter delivery vehicle, at least from the early 1970's and ongoing today. They are almost unbreakable.
CLASS video again lad's /UK.
Hey guys nice job on that I have a really good buddy of mine that built a couple 70s with the 140 on at the same exact motor you're running he did some mods and hit 72 miles an hour quickly let off because of them bikes don't like going that fast but your 70 will reach over 70 mile an hour lol
nice to see you guys are so mindblown driving a 70cc and a 140cc at 52 MPH you should try a 2stroke bike, can get up to 55 MPH on a 50cc and some have 100-110cc kits that will get you up to 100 MPH
That's great John = I don't want to much power?🤔 ike answer's HA ( yea right to much power) never!!!!!!!!!!!! Great guys!!
Also if you guys do a 1" riser on the Handel bars and put them a.little forward, it wount want to pull a wheelie so fast, make it easier to control
What do you think about the. Tillotson TCT Mechanical Fuel Injection
In Belgium There is A Version Of The CT70. A SkyTeam Dax It Comes with a 50 CC Motor And It Is Awesome!!! I Even Own One!
you don't need turn signals in North Carolina said that multiple times during the building of these bikes
La couleur de ton dax avec lumiere du jour est superbe .
would it have been better and easier (if it'd fit!) to put a trail 90 engine in there to build up?
How do you get the rear engine bolt into the ct frame? Do i have to grind down the ct frame where the engine wont fit or tru to grind down engine?
Any Chance we could see a 10hp Diesel off road buggy down the road? Love the videos!
Sure! Just send us a 10hp Diesel engine and we'll make it happen😜
If they weren't $1000 I would :D
lmao of course you would :P
I've got one of those water cooled Yanmar diesel engines lying around (specifically a TF-90). It is complete however I did take some bits off to check things out so those bolts will need to be re-torqued...
_Make me an offer_ *:)*
Carroll Stream has one with electric start for $850. The 6hp is about $700 or so.
I see you got a new Avalanche!! Nice!!
TheUnendingVids Good eyes!
TammySue PattyPan: As someone who owns an Avalanche, its easy to spot them!
Would be sick to see a grom motor swap on a 70 although it probably wouldn’t be much faster but you wouldn’t have a problem with the charging system and electric start!
Hi there, you guys remind me of my youth. Maybe put a Preditor in the ATV.
What are somethings I can get for my 110cc lifan to add some power and speed?
have you tried raising the needle one clip ?
I like the 140 engine in the ct70 . A eBay racing exhaust is decent to
I race motorcycles and the bike I race uses a yx140 engine which is the one you have. You can get both compression pistons and high lift cams for them for next to nothing and they make a huge difference! I am from the uk so may not be available in us. The cams are called the z40 cams
And a Light weight flywheel as the cranks are known to snap at high rom with the stock heavy flywheel
It definitely looks better
i got the same shoks on my hercules prima g3 they are 5cm deeper then the originals
Yay back to the ct70s 😁
Have you guys considered putting and “inner rotor kit” on these engines? Or on the 200cc shifter kart? With a higher performance cdi box you should be able to spin 10-12 thousand rpms.
Nice Fast and Furious reference.
I know this is probably an old build now but I have a question how did you mount the foot pegs. I heard something about a bunch of washers
Yeah man a yx 140cc.
a nice engine that goes fast
I did this to my trail 90 get a new chain and check the hub often the rubber that’s in it will go bad then ruin it just check it often trust me