Honda CT90 aftermarket perfect carb!

[@bewilderment9268]

I had very similar results with mine. I have the same carb. Did trim the overflow pipe too. I had to set my needle to the highest groove (lowest position), but other than that, she's a runner. Named it DREAMSICLE. It's orange.

[@TepcoCycleRepair]

Nice, good to hear!

[@calescapee9642]

Got my carb on EBay. Pulled out the drain pipe And shortened it on a sanding wheel, tapped in back into the carb and no more clearance problem. One kick start.

[@edwardgolonka-jd4sc]

I apologize for previous comment, installed carburetor from winn cycles your correct hood upgrade, may have to trim shroud to clear throttle cable thx

[@Billy-burner]

Got mine for half the price of yours, and it's identical. Just as good.. 👍

[@TepcoCycleRepair]

@@Billy-burner Awesome!

[@tauncfester3022]

I owned a 1970 CT90 which the PO had sent in to Powroll in Bend, OR, was their race tuned stroker, bored and hotter cammed 125cc. The original carb was replaced by an ATC125 carb. It made great power but it really could have used an oil cooler which no-one made back then. Your after market carb starting without the choke means it's far too rich in the idle circuit pilot and possible the airbleed adjustment too. Stock adjustment should be the engine starts with the choke on and starts to stumble a little so you feather open the choke in stages until it's fairly warmed up 26 years later, I've got a 1969 C-102 with a extremely worn 49cc stock engine and I've replaced it with a semi automatic, pitbike 125 cc Honda clone, that isn't too far from the performance of that old Powroll kitted engine. Same rather stiff compression means you've got to start it like an old BSA MX 500, with the engine on TDC/compression stroke. It's clone engine has a clone ATC carb and that carb needed a lot of rejetting work with it also being too rich in both the main and pilot. I kinda miss my old Powroll'd CT90, that engine's immediate torque curve increase almost made the 4X4 trail gearing unnecessary.

[@denisdenisov1988]

Спасибо, тоже были сомнения, теперь точно куплю. Еще раз спасибо, рад что нашёл ваше видео.

[@TepcoCycleRepair]

I'm unable to translate that, sorry.

[@TepcoCycleRepair]

I got it, thanks for the comment!

[@Drayman1011]

the ct110 carb will work just fine on the ct90 and you get a little better performance overall and a little easier to source. I have a CT110 carb on my 90, I'll have to see what jets I am using

[@hunterredd4882]

Jim Morton I had the exact same thing happen on a 76 CT90. Put the new carb on. Had adjusted the points and at WOT it will bog every single time. I am in Idaho at 4200 feet but definitely frustrating experience.

[@jessbailey6718]

Very well done thanks for this very helpful for my 70 CT90 I just got!

[@normananderson2583]

I could certainly use this carb for my 75 CT90 which is now in rehab. Unfortunately it is no longer available from AMZN and I cannot find another with the same specs....Appreciated your rebuild video and am working with that.

[@bobcranberries5853]

Dratv.com has good ones. Not from china

[@Puckerupbuttercup261]

I just picked up a 1970. This is good info, thanks!

[@jimcox6661]

Today I solve a long going problem. I've stressed over my carb no doing good after 35 mph except down hill , today I drilled holes in my gas cap and that fixed it. My bike now gos 45+ more down hill "I can live with that" What I learned was it was creating vacuum in the tank and sucking air through the gas line going into the carb at the carb under the clamp. My cap had a very small hole on one side and two the same small size on the other, I drilled two on each side approximately the size of #2 pencil lead , I did get a little splash of gas out of those holes but my tank was completely full at that test drive time. Maybe this can help with someone else mystery. I wish I could send pictures.

[@TepcoCycleRepair]

Thanks for the info, a clogged vent cap can definitely cause havock!

[@brook61]

Tianfeng has a $20-25 carb, no high altitude, choke hits the plastic cover (if you still have one)

[@bobcranberries5853]

That style of manger is often stamped on the underside so you might have to remove it to see. I know I’m late to the party but you don’t want it to be too lean. Completely stock it should be somewhere around 75 and 65 is too lean.

[@rhuemulhollen2496]

Great review. So can you tell me where you got that carb, and any specific number needed to order the same one that you did? I need one for my 71 CT90. Thanks.

[@bobcranberries5853]

Dratv has some on website. Good ones not from China think there about $50. I also have a 71 and the stock jet size is wrong. I believe there was even a recall on it. So if your main jet is 65 it’s wrong. Should be something like 75. A65 main jet will burn your Engine.

[@brentjohnson3147]

Just installed this carb on my ct90. Its leaking gas from the bottom overflow when in the on or reserve position. Any idea what I have done wrong? Thanks for the great video!

[@TepcoCycleRepair]

The float might be stuck, just tap the side of the bowl with the back of a screwdriver to free it up. Sometimes it happens from carbs sitting.

[@fakestreamedia5309]

Thanks for the video…. Trying to find a K-1 carburetor for a 1969 CT90…, Coming up dry any ideas?

[@brutalcrusadermaulgracies4246]

Ebay

[@TheRealKalEll]

Carb size: Measure INSIDE throat diameter using opposite end of caliper, no? (31mm)

[@TepcoCycleRepair]

Yes, inside the engine side of the carb.

[@TheRealKalEll]

@@TepcoCycleRepair thank you Sir

[@rptrower]

Carb is currently unavailable from Amazon, could be Covid related shipping problems.

[@jimmorton1169]

Thank you sir. I have a new Chinese carb on my ct 110 (1982). I've got good compression, taken top end off, had valves leak tested and the rings while original seem to hold air under leak down (in other words I highly doubt internal engine problems). Tuned and re-tuned the carb and it runs great but only through mid throttle. Tried every clip position on the pin (it came to me at position 3- moved it to five and it ran poorly- I find position 2 is the best). Very responsive throttle, great starting. Even though the carb has less than 100 miles I did a cleaning (not rebuild) however I did NOT check or adjust float level. I am not confident that I can measure level with a caliper/rule so i will check with the clear tube method. Do I sound like I am on a logical path here to determine why under heavy load AND/OR WOT it bogs, spits--If I apply manual choke under those circumstances it almost kills the bike. I welcome any and all's advice. Thanks for the great videos. Subscribing now. Jim

[@TepcoCycleRepair]

Sounds like your main jet is to rich. Lean your main jet a few sizes an see what it does.

[@broadwayFan28]

Try removing the advance mechanism and cleaning/lubing. Also check for intake obstruction (remove filter and test ride). I found a silica pack in my pod filter and had same prob. Other than that, do the timing and set the points to spec. This assumes the main jet is clean cause it's new.

[@jimmorton1169]

@@broadwayFan28 Will do thanks. And I have electronic ignition so I do not have points, correct? I need to check my manual

[@TepcoCycleRepair]

Correct, you do not have points.

[@maxwellkeohane9479]

Aloha buddy! Great vid man, really helpful!

[@randyarellanes6409]

All the carburetors I've ordered have all had the bolt holes to wide, the bolt holes on my intake tube are 2 3/4 in. Wide at center. The new carbs bolt holes are all 2 7/8 inches apart at center. All the new carbs say their for a 1969 ct90 k1 which is what I believe I have, all that being said I'm wondering if I need to just rebuild the original carburetor. HELP!.

[@TepcoCycleRepair]

I wonder if it's just a different intake manifold between the two years?

[@robertallen2326]

The 69 was a one year only design, alot of hard to find parts.

[@alanchisholm6811]

The link for model # is not visible. Please notify where I can buy it and the model # if possible. Thanks

[@TepcoCycleRepair]

Try the link in the description again, I just tried it and it worked and said 9 left. Thanks for watching.

[@bradleyjohnson452]

Great video. Thank you. Do you know where I get replacement or different size jets? I bought one as a spare and when I cleaned it noticed one of the jets is clogged from the factory.

[@TepcoCycleRepair]

www.jetsrus.com/ Jets r us should have what you need and they have pictures to be sure your ordering the right jets.

[@JshMusician]

Great vid. I've been thinking of buying a new carb for my ST90. I have the high idle issue and I have solved all air leaks except near the base of the carb. Had new rebuild kit with new gaskets. Still an air leak. I'm wondering if I have a crack in the carb somewhere. I'm also wondering if my high idle issue is caused by something else.

[@TepcoCycleRepair]

A bowl gasket leak won't cause high idle. Make sure you have free play in your throttle so it's closing all the way. Does your bike return to idle quickly or slowly. If slowly, go to the next richest pilot jet or try adjusting the mixture screw a bit richer. If you're turning your idle all the way down and it's still high, your slide isn't closing all the way. Hope those tips help. Thanks for watching. I have 3 CT90's coming in for repairs/service next month.

[@randyarellanes6409]

Buyer beware, the Chinese carburetor will not fit a 1969 ct90 k1. The bolt holes do not line up, I have already tried two different carburetors from different suppliers and neather one worked. Also most new carbs for the ct has the overflow come straight down, which also creates a problem with trying to attach them. You can pretty much find carburetors for the ct except for the 1969ct90 k1.

[@shermgerm6458]

Did you figure out which one fits best? I've got a 67'

[@bobcranberries5853]

Dratv.com probably has what you need

[@achebeleu]

@@shermgerm6458 did you find a solution? I also have a 67

[@dalegrubbs4431]

What is the model number & where did you buy this carburetor

[@granttevelde854]

Does anyone have the measurements for the distance between the bolt holes on the manifold side and the inside diameter for that side?

[@jimbeam6273]

No longer available on Amazon :-(

[@datnotme9921]

You know where i can find the 1/4" black plastic looking gasket against the carburetor? Mine is split and broken chunk missing at the bolt. I need this carb and gasket. Thx for sharing! 👍👀

[@TepcoCycleRepair]

Part # is 16211-077-306 under $12 at rocky mountain atv. Thanks for watching! www.rockymountainatvmc.com/oem-schematic/2

[@TepcoCycleRepair]

Search for Part #16211-077-010 on line it's the old #

[@datnotme9921]

@@TepcoCycleRepair Thank you So Much

[@larrywag1]

Will this carb fit a 72 CT90? Since the carb you recommend is currently unavailable, do you think it’s worth a gamble on one of the other Chinese carbs available on Amazon?

[@opinion4246]

Chalk one up for Chinese.👍

[@heidiwall1889]

Thanh you for doing this helpful video, I have a CT 90 trail bike and need a new carb. Where did you find yours? I see on mine the bolts to the intake are not directly horizontal but slightly off set which allows the carb to sit horizontal or straight. Is that how your carb was ?

[@TepcoCycleRepair]

I put a link in the description. I've been told this carb doesn't fit a 1969 as those are different. The holes are off set on this one.

[@bobcranberries5853]

Dratv.com has them

[@jennyallen2604]

It would be so helpful to know the model or part ID. With that said I know it exist somewhere.

[@TepcoCycleRepair]

I put a link in the description, hope they're still available.

[@bobcranberries5853]

Dratv.com has them. Good ones not from China

[@yetanotherlancer]

Awesome video! Also do you think this aftermarket carburetor would work with a 1967 model? The intake is vertical facing up and down instead of horizontal fore and aft like the 70s models. Not sure if this would mess up the float operation.

[@TepcoCycleRepair]

The carb has to be upright so it depends on the intake manifold.

[@yetanotherlancer]

@@TepcoCycleRepair thank you!

[@achebeleu]

Did you find a solution? I also have a 67 that needs a new carb

[@yetanotherlancer]

@Hannah Chebeleu This aftermarket carb didn't work for the 67. Sadly it is still in storage as I'm having a hard time finding a rebuild kit or replacement for it. Honda only used that particular Keihin carb on 64 through 68 year models then switched when they re-positioned the intake port in the cylinder.

[@achebeleu]

@@yetanotherlancer thanks a bunch for the info!

[@Joeak74]

A spacer under the intake tube would have rased the carb no?

[@TepcoCycleRepair]

Yes, but that pipe is just an overflow pipe so easier just to cut it.

[@brentmarsh1325]

I have a cm91 with carb problems. what is the distance between the studs on this carb? centre to centre

[@TepcoCycleRepair]

I don't have one now to measure. I believe some of the Amazon and eBay listings show the measurements you're looking for.

[@NshsShdh-jx9ob]

👍♥️🥰

[@johnamato2424]

Good informing video. I'd like too see more ventilation in your shop for your sake though :) perhaps a hose on the exhaust out the window at least. Happy trails.

[@TepcoCycleRepair]

Thanks, I have a large exhaust fan. I cut it on between takes.

[@jasonveilleux9791]

Great job! Thx

[@electroluxlad]

The first one I ever bought it was a piece of shit second one was absolutely perfect 😂

[@jessier.rodriguez9162]

So what’s the name of the the aftermarket & at what web site to look up?

[@TepcoCycleRepair]

I have a link in the description.

[@jimmorton1169]

think this would be a good choice for my 1982 ct110?

[@TepcoCycleRepair]

Yes, it seems they are getting hard to find.

[@ChrisBusy]

please state the make & model carburetor and where to purchase. thank you. good flick

[@TepcoCycleRepair]

Link is in the description, it's unavailable at the moment. It's a copy carb no markings.

[@bobcranberries5853]

Try dratv.com. He has them. Good ones not from China

[@edwardgolonka-jd4sc]

Why didn't u rebuild original?

[@TepcoCycleRepair]

It was corroded beyond repair. That is the best option if the original is still usable.

[@edwardgolonka-jd4sc]

Mission impossible one kick 🦶🦵

[@ron5454]

Where did you get the air boot from?

[@TepcoCycleRepair]

I got the airbox boot from eBay.

[@ron5454]

@@TepcoCycleRepair Thank you

[@jeffrey9102]

How is the china carburetor doing? Thanks

[@TepcoCycleRepair]

Doing good, customer hasn't mentioned any issues.

[@danksoulsguru5281]

The item is out of stock now. Any other recommendations?

[@TepcoCycleRepair]

@@danksoulsguru5281 So if you look at others, they have different slide caps. Look for one with the same top slide cap. No guarantees but I would bet they are the same.

[@bobcranberries5853]

Try dratv.com he has them.

[@edwardgolonka-jd4sc]

China got one right on the gasket wow

[@pierremartel3552]

I dont know if you can help me with that question, would that fit to replace my 1967 C90?

[@pierremartel3552]

And Yest it is a 1967. been in a barn 40+ years and 6 in my garage waiting for me to finally decide to "fix" it

[@rogergardenhire3408]

Same here. I have a 68

[@HackoDis]

Just got this carb from amazon (canada) www.amazon.ca/NewJs-Carburetor-CT90K2-CT90K3-Replacement/dp/B08FC8PL5N/ref=sr_1_16?dchild=1&keywords=ct90+carb&qid=1624416813&sr=8-16 Identical to the one you have here, they are sold under a couple different names. Glad to see that the only change i need to do is the drain fitting, Can't wait to see if this bike will run :D

[@randyarellanes6409]

That carburetor will not fit a 1969 ct90 k1

[@TepcoCycleRepair]

Thanks, what's the difference in the 69 that won't let it fit?

[@killerninjamonkey]

The intake manifold. You'll need to get the newer K2 and up intake manifold.

[@russelmiller8229]

Just found out it doesn’t fit a 69.

[@garydavidson1710]

Setting the points

[@creativetechdude]

I purchased this carburetor. It never ran properly. So for me it was a total waste of money.

[@larrybien7599]

call makuni international

[@edwardgolonka-jd4sc]

Impossible china doesn't fit agsinst Japanese or Taiwan built

[@edwardgolonka-jd4sc]

Hey ain't rocket science 🧪 u wont t see one them on Mars