cl-72 jets

otis · Post by **otis** » Sun Nov 01, 2009 5:03 pm

can anyone tell me the correct jet sizes, and most common jet needle setting for the cl-72 22mm carbs....thanks otis.

dkwilfert · Post by **dkwilfert** » Mon Nov 02, 2009 4:49 am

My Clymers manual says for the 22mm carbs on the CL72 it is 125 on the mains and 40 on the slow.

otis · Post by **otis** » Mon Nov 02, 2009 12:47 pm

thanks for looking that up. mine has 120 main and 40 slow how do think this will affect engine operation? i have s2 oversize pistons. thanks otis

jensen · Post by **jensen** » Mon Nov 02, 2009 2:05 pm

Hi,

The best size of the yet is depending on where you live (humidity, altitude, temperature), there's no one size fits all, that's why there is aan extended choice of jets available.

Jensen

otis · Post by **otis** » Mon Nov 02, 2009 5:08 pm

jensen , thanks for your reply, guess it's trail and error, or go with what you have 'cause that's all there is. looks like you have a nice collection of old hondas, are they all running? finding parts isn't easy but there is a lot of info on this site.

jensen · Post by **jensen** » Tue Nov 03, 2009 3:46 am

Hi Otis,

Yes, all are drivable, but some more then others (George Orwell).

My cb72 '67 is my daily driver (more than 7500 km / year), and the C78 '64 is also very drivable with more than 3000 km a year. My CB400F is getting also plenty of km's on the counter every year, I use this for long distances for my work.

No, trail and error is not an option parts are to expensive, I put them on a dyno and measure what is good or not, see my comments on the thread :

Honda305.com Forum -> Motors - 247cc & 305cc | 337cc & 350cc - dyno results

In Dutch language: Meten is weten, gissen is missen (measuring is knowing, guessing is missing or failure).

I have lots of parts for these engines, got with patience, luck (and money).

I'm searching for NOS parts for these engines for almost eight years now, so patience is important.

Jensen

otis · Post by **otis** » Tue Nov 03, 2009 2:23 pm

jensen, reguarding meten is weten gissen is missen, we say, close only counts in horse shoes, and hand grenades. kind of the same thought . i've got to ask how you're able to put so many km's on your bikes..... aren't you supposed to be keeping your finger in the dike?...otis