Does anyone know what size this Mikuni carb is??

[bigworm626]

It came off a moded 79 honda 110. Also attached to it was a PK short angled manifold. Would this carb be to big to install on my 1970 honda atc 90cc engine? Also the throttle cable is alot thicker & will have to be rigged to fit. Any suggestions would be great!!

[bigworm626]

Hi Guys,
anybody with some carb knowledge??

[shortline10]

Looks like a VM24mm mikuni to me .

[Vealmonkey]

The easiest way to check the carb size is to check the size of the intake with a set of calipers. Not the wide part where the air filter would go, but the part where the fuel needle is. That will give you the carb size. Not sure of the model. No idea what the jetting is. If you don't have a modified engine, bigger piston, cam etc, than more than likely your stock trike won't run well with that carb set up. You could spend alot of time jetting the carb out, but that would be a long process. It's also hard to tell what the carb is with those pictures. There should be some markings on the carb somewhere.

[bigworm626]

Veal,
Here the lowdown on these bikes I got recently:
1 1970 US90cc honda atc - the owner said it had engine mods done to it back in it's hey day. big bore, supertrapp muffler, the axle arms are longer then normal so the tire stick out of the fender by like 3/4 of a tire on each side. But came with no carb.

the other bike I got was a 1979 honda atc 110. this bike came w/ the carb in the picture. not sure on the engine status but also came w/ supertrapp muffler. I will be using this as a parts bike.

On the 90cc I checked the oil that it had in the block, it was full of oil but since the bike has been sitting for so long, it's begining to look dark & sludgy. Will this be a problem you think?? bikes have been sitting for about 15 years. Theres good compression & the gears seem to engage well which is a relief for now. Any suggestion on how to takle this project? Thx

[Vealmonkey]

You should just tear it all the way down and at least replace all the bearings and seals. You will also want to inspect all parts carefully. Check the connecting rod for excessive play. Make sure all oil passages and oil screen and oil pump are all cleaned and properly working. Maybe think about replacing your clutch fibers at the very least. While you are in the engine, check piston for size and check crank for stroke. Make sure you don't find any hidden nasties in there. You want the engine to last, not hand grenade from something hidden inside you didn't know about. Have fun.