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140cc CT70 Top Speed Testing, Lighting Install!
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- Опубліковано 5 бер 2019
- In today's video, we do some top speed testing with my 1974 Honda CT70. I swapped a high performance 140cc engine on it with a 26mm carburetor, but I'm having some kind of fuel related problem. We also install a stator, voltage regulator, and a few other parts from TBolt USA.
Thanks for Watching!
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l think we might be causing the price of these bikes to go up, id challenge a race but you will need to run with 2 flats to even out the double cc engine, great video guys .
Hahaha thanks man
Daytona 190cc engine fits in the ct70.. that should get u a win lol
Just watched your trail 70 video I like it when you guys coordinate good stuff
I love it when I see comments from other people I subscribe to. Seems like we're all watching the same good stuff.
MUSTIE1 and cars and cameras........i think this is a collaboration video that would be well received
To rule out fuel delivery/tank probs, run a known good source. Suspect vacuum leak before head, spray start fluid around gasket seals while running listen for revs to climb.
Yeah this is obvious not sure why they dont try that
Use carb cleaner and wait for it to die. Safer than starting fluid
Propane is my go to. Idle will race and it's pretty safe around a running engine
I dont have a CT70 but this channel has been absolutely instrumental in learning about my Icebear Champion 125. I know this video is 'old' but i want to express my full gratitude that you documented so many different processes involving this bike.
Two ct70 vids today,you and Mustie1 😄👍🏻
pop pop pop lol :) me too @biggdaddy2000
I was like 2 new ct vids in one day today was a good day lol
Same here!
mustie needed that puller tool too
Same here I watch mustie 1
You guys have inspired me to make my own little projects! I slapped a 49cc pocket bike motor onto a child's offroad bike, thing is a blast. I got a pipe bender and made a classic mini bike, and now I'm in the process of making a dune buggy! Love the videos you guys put out! Keep up the great work! It'll be fine!
I grew up with a Honda 70 back in the early 1970's and mine had the 3 speed trans. It would run all day and the speedo needle pinned at the 45 mph. Good little bike and took a beating. These clips bring back memories. Well done guys.👍👍👍👍👍🏁🏁🏁
Definitely keep showing it. I would suggest trying a different carb. Or see if you can increase the size of the jet/orifice for the idle circuit. It might not be getting enough fuel at idle, so it eventually starves. And definitely replace the cap itself with a whole new cap. Can you locate a tank that possibly has a larger feed line? Granted, it is not a large carb or a large engine, but that fuel flow was miserable looking!!
This bike boogies! Just need to work out a few more kinks and it'll be 👌
golf kart live axle swap plz
Uhm... is that gas cap venting properly? Everybody keeps saying.
Did you guys check if it’s leaking compression anywhere?
Look if there maybe a air leak not at the carb but where it goes in the engine look if you feel air if it does maybe thats the issue
My 140 was having the same exact problem, i was running the same air filter as you. I bought a uni filter and with fresh 91 oct gas shes a trooper now, even kept the stock 22mm carb for it not saying yalls might be as simple as that but... js
when using a flywheelpuller , put a balbearing in between the crank and the puller , that way it doesnt mushroom the treads
Thanks..
Very good, now you're getting somewhere with the CT70. I bought my Piranha 140cc motor for my '74 ST90 from Vince at T-Bolt. Did you happen to ask him about his recommendation for a carb? Same as the one I gave you after the last episode- Mikuni VM26-606. It will solve your idle problems and give you a lot more power. Exhaust is awesome, couldn't be better. But you still need more air/ fuel. By the way, have you tinkered with the idle air mixture screw? It's located on the bottom and right by the intake flange. Pain to get to, they even make a special flexible screwdriver tool to adjust it. Love your show, keep those great builds coming!
pull the emulsion tube behind main jet, the holes may be clogged around the needle, check low speed jet
Its a different type of carb.
*CarsandCameras* More CT70 videos please! Excellent work, gettin er done.
Hey Ike and John, i just wanted to say thanks for inspiring me to build a racing mower!
I love the simplicity of motorcycles of this era.. it's a large part of why I got a rebel250. 70s tech but made in 09. The thing is barely more complicated than a lawnmower, super reliable and fast enough to take any road. Been my daily driver for a year!
It's a very cool thing to see two super close friends together and the respect you both have for each other
Joe Navy veteran 🇺🇸🇺🇸
I love the trail 70 series keep it up and thank you very much
I just got the same Honda 70 as your blue one, I totally would love to keep seeing the trail 70 videos I'm real excited about this bike and I really learned a bunch from you guys van engine swap in 6 volt to 12 volt awesome little bikes thanks guys keep up the good work
you and Mustie1 are rockin the ct70's this week !
Oh ya sub for a sub ;)
Man I love those little bikes! Good stuff guys!
i love your trail 70 videos i have one and it helps me t know things better. keep making these videos
i have worked with 6 of the 125 version, i had to ajust the valves every 2 weeks. the rockers do not do well with heat... keep up the great work guys ;)
I just recently found your channel you guys are awesome I am fixing up a go kart for my niece and your channel has gave me so many ideas
Gotta love the folks over at tbolt😀😀👍
Yet, ANOTHER great video Car's and Camera's!
Thanks for sharing,
-Thomas Skagen
Port Orchard, Washington State
That ct70 goes fast.You guys always do good work 👍.
I want to know why anybody would give you guys a thumbs-down on any of your videos I've watched almost all your videos from 5 years ago to now haven't seen all of them but most of them they're all thumbs up
Great video guys keep it up.
Man, this is SUPER intriguing. I'm thinking I want to build a CT70 exactly like yours! Granted, the last thing I need is another project, what with 8 cars, 3 snowmobiles, a crappy Ninja 250, and a soon-to-be motorcycle powered go kart...lol
I had the same problem with my pit bike , I chased it forever , Till I changed the carb out . ENJOYED !
ive had the same issue with rough running, it is either caused by a carb that is too big for the engine or a lean AFR, hope this helps guys, keep up the good work
Loving the content 😊 you guys rock! How about doing a e-bike conversion on a mini bike?
I have a Honda CT 70 it's 1982 and is only 72cc I love it. They are really fun and my starts first kick all the time
Great vid guys!!!
Keep up the good work guys. Much love from washington state
PNW Bushica Adventures, stanwood!!
@@joekizonu9503 nice Yakima here
Andrey Angere, lots of love for the cars and camera guys in the pnw!!
You guys are cool Isaac knows his business when it comes to Motors keep the good videos coming stay cool thumbs up👍😎🕇
I love the exhaust on it, sounds great for a little engine like that!
Love this thing. Cant wait for more videos
Keep troubleshooting PLEASE!! Having exact same engine problems!
Love the Trail 70 videos.
Great video 👌👌
Go man go !! He's got that speedo pinned wide open
Love the Trail 70 Vids. Gotta put Ikes back on here. I wanna see what sort of mods you can do the original engine.
Love those old trail 70 would like to see more please!
Great videos 🤘
I have a mini-trail 50 that was having similar issues recently. We thought it was the carb and kept cleaning things out much like you did. It would run perfect for while and then start acting up. It turned out to be a bad coil.
I've actually heard of this before with a buddy's Harley had a bad accel coil , when the engine and the coil heated up it would start to give up sputter and die this is a good point to make
I am not a professional but I have been building and fixing engines for a while. That is very common. I am pretty sure it has even happened on this channel. Awesomely you can usually bake them and reseal in epoxy and you are good to go for cheap engines or classics with no easy replacments. If the baking dosnt work it is because the coil has shorted on the inside and is simply trash at that point(unless you have an crusty connection on the ignition side). That being said I have been fooled into thinking a coil was overheating when in reallity I just didnt realize the plug wire was sitting on the engine, so when it got hot enough, it would loos conductivity enough to where it just bogged at hot high RPMs. Out of the over 20 coils I have rebuilt, I have only had two or three that were actually shorted out internally.
gibbyrockerhunter great tips there mate, I will definitely keep an eye out for the plugwire issue, did the leads look otherwise ok or could you see evidence of overheating? I like to check the resistance on my leads periodically but I never put much thought into why they're failing😂
More with the 3rd person cameraman. Great shots, awesome seeing both of you together without selfie cam, and makes it seems more like an actual "TV show" if you know what I mean. Awesome guys job.
Or maybe "awesome job guys." Blame the bud light lol
I have a spare CDI if you need one guys, came from T-bolt if I recall as well. Good stuff.
Need more ct70 videos. Time for a new road trip.
I just got a piranha 140 from them can't wait to put it on my crf 50
Hell yeah! Love these videos!!
Isaac seemed like he had a bad day at work or crabby! Cheer up fella!
I just purchased a 1970 Honda Ct70 cafe racer for $800! I’m excited to finally have them and I see where the addiction comes from
Change the spark plug it's often overlooked as a possible cause of stalling/misfiring the electrode may be broken internally
Even check the gap too
Awesomus Maximus good call,had a gx160 that had this problem, it was the plug.
Awesomus Maximus I worked on a 450 international tractor with new spark plugs and they needed replaced again so ya definitely don’t rule out spark plugs.
I had a 1978 artic cat panther that sat since 1979 with old fuel in the tank and I pressure washed the inside of the tank and then put purple power along with a bunch of nuts in it to break up the other junk still in the tank and it came out spotless
Check your float valve on carb it’s doin exactly what my 125 Chinese pitbike does works great now
Love these things and had one when I was like 10 i will definitely get another someday soo fun!!!
Better get one before the prices go up
As a kid growing up my brother and me had a Honda 50 trail bike and we hardly ever got to ride it because it wouldn't run right it was all ways in the bike shop so we put are mowing money together and bought a Yamaha 100 and rode the hell out of it
its a mixture ussue i hade the same issue on a lifan 125cc i leaned it out a little and it cleared right out
I called it last video guys love the videos
Getting a throttle cable with correct 90 degree connector will help your performance alot since it is also most likely letting air in the top of the carb causing it to lean out at high rpm. The rubber boot on top of carb does have a function contrary to popular belief.
Love this show
plug cap or spark plug had this problem for ages on my bike in the end i grabbed the plug cap got a shock changed it never had a prob since another thing to watch for is having a resisted plug and a resisted cap
That bike is awesome!!
Sub for a sub
Put a tillotson 212 on my son's ct200u and at first without the jackshaft but 75mph top speed and little hill pulling ability made me put jackshaft on today. Back down to 40mph governed but it will tote front tire on takeoff even with my 220lb weight on it.. Going to get an electric start for my trailmaster that comes tomorrow once I wear out the stock engine.
My kz900 had a similar problem a few years ago, turned out to be the float height was set too low. Try raising the float height just a little bit and the stalling might go away. What's happening is during high rpm, your engine is creating a vacuum past the needle and seat causing you to get the proper amount of fuel to sustain it. However once you drop back down to idle, the vacuum stops and the needle and seat closes. Once the engine consumes the left over fuel in the bowl from the high rpm, it's now causing the jets to struggle to pick up the proper amount of fuel because the float wont allow the level to rise to the proper height.
My grandfather who lived in Alabama had a fourwheeler that I would ride whenever I came over. We had to have it serviced several times and the carburetor was the problem most of the time, kept getting dirty. He passed away so I stopped coming over. The fourwheeler kinda just disappeared one day. Guessing the tank was dirty all along...
More of this please!!
MUSTIE 1 ordered the same flywheel puller today. 👍
Check your shutoff on the gas tank it might be partially plugged up to where at your higher rpm's you are depleting the fuel in your filter faster than the clogged shutoff can replenish the fuel supply. also check and make sure the baffles in the muffler have not rusted out and partially collapsed causing a little bit of back pressure.
I love the trail 70cc videos!! It would be cool if you did a vintage honda three wheeler!
I'm 2:00 in and I've already figured it out if I'm wrong o well but I believe it is the idle jet / circuit it messed up.
Defentliey running lean, i had the same problem exakt same carb, the airfuel mixture srew is located in front of the bowl right before the intake part from the motor, these carb are screw out=richer and in=leaner. On both my bikes i had this problem and same carb, screw the mxiture screw really far out and up the idle abit both my bikes ran perfect after that. Its worth a shot
i must say I am starting to see similarity that i have noticed the newer china motors seems like at first, they run good but after you break them in they start cutting out like a problem with the firing advance loose or something could it be that's the next thing i am trying it could be as simple as cheap springs hey i have tried just about everything you can think of mustie 1 has one but its a Honda they don't have this problem great video guys hope someone finds out why this kind of miss is occurring because i have been dealing with it for a while
that mini bike is looken great,,i wonder if you can get a original honda 70 exhaust heat shield to fit that pipe you have ... so it looks stock ...that would look sharp as hell on there !!!! great vid
SevenOfNine xx or just cut up an exhaust shield from a Peterbilt muffler. That would be a nice "one off."
Get a smaller pancake filter for inline, they work extremely well with gravity fed fuel systems
Enjoyed seeing a pit bike engine video, I got a Kandi kart I'm swapping a 125cc and semi auto into.
I think you just need to play around with different main jets, play with the idle screw and adjust the needle up or down. And i recommend changing that air filter for one made from foam.
"Thank you TBolt USA"
Check the gasket where the pipe from the carb goes into the engine my pit bike had a similar problem and I thought it was a carb problem but the gasket was bad
"there could be a _piece of garbage_ in the needle valve"
come on guys, there's no way I could fit in there.
Sounds like it may be spark related. Spark Plug to cold or low voltage at the coil or weak CDI pulse signal.
I had exactly the same problem with a 1970 VW 1600cc engine. I went thru all the same business that you two have. It ended up needing a $20 ignition coil.
I swear you guys could make sweeping the floor interesting. Love the videos and look forward to every one. Keep up the good work.
@@psygn0sis oh man you got me good. Im now going to cry myself to sleep on my cock shaped pillow.
That little 140 sounds really good. Sure likes to rev! Can you guys post a link to the Oregon event, would love to ride down to see you guys if it's not too far from my location in Washington State.
Try adjusting your idle air correction screw
That bike is dying kind of like a briggs with a loose valve seat. Hope you guys get it running well. That lil bike is cool as frig.
Can you guys give a update on all of your projects, where they are going and plans for future projects
That bike is MINT! I want one now lol
Far from mint, but thanks! Get one, they're awesome.
Get bigger a pilot jet
Darn it sorry about that Camaro
Camaro Rick F*ckin' MIIIIIINT!!
I have a cherry 1978 in black, the only year they were black, only 770 miles, starts in 2 kicks, purrs like a little swiss watch.
sherlock.ohmsAT aol.com
I asked you guys does this bike have a petcock at bottom of tank? Some have a reserve and on or run position.Some have tubes with holes in them built into the petcocks.Res. is a different length so when it's empty it is lol. They get green or plugged up.I believe it is Vent and petcock as I suggested before.
Y’all should do a road trip with ur ct70 and the 670 chopper
You can connect the white and yellow wires together to get full time charging at all rpms
You can get racing cdis for about $20 on ebay and they actually work and improve power and help with future mods
Awsome man.
Did you try changing the spark plug ? Quick thing to try, and a failing plug can have some funky symptoms. One of my huskys had a bad plug, I was almost sure it was carb issues. Only ran good on full throttle. Changed it just because it was old, and I was going too anyway. Now she runs sweet as a button. Pulls harder then ever too, even though she seemed ok on wot before 🙂
Hi guy,s...Try running the bike without the air filter to check there is sufficient surface area on decell as not to have vacuum build-up behind the venturi causing extra fuel discharge ? a quick easy test...May need a foam pod. Cheers.
as i recall, those engines have a tenancy to pop air OUT of the intake at idle. Mine always did, even after many valve adjustments. Something to do with the amount of timing they require on the valves. I would raise the idle position of the carbs piston....then lower the needle, allowing the air to have somewhere to go. Worth a shot?
Turn the fuel tap off just before it stalls, then kill it if you need to. Check the fuel level in the bowl to see if it's running out. Some carbs also have a nipple on the bowl drain so you can also put a clear hose on it and run it up beside the carb so you can easily see the fuel level at any time.
I am saving up for one of my own
I had the same problem with rust in my gas tank then I got another one then saved me alot of time cleaning the carb 😏
Have you checked the vavle clearance will thay can cause poor running and bad or dying idle when there too tight