gk71f

[bartman400]

how many people know about the jet sizes on a gk71f? did you guys that a 71f runs bigger jets on no 2 and 3 cylinders to keep them cooler

[Evilchicken0]

um .... this is the Yamaha forum

[bartman400]

OOOOPS!

[jim157]

Moved to the GSXR section.

[Variablevalves suck]

Check the manual for a definite but they regularly put jets a couple larger in the middle cylinders.

[mike151]

Hi Bart, was going to ask about these carbs myself today, you beat me to it ! 1st question, what is the name of these twin carbs, looks like ACSAM ,never heard of them. Took one pair of mine apart today & found 2x 98's mains in one pair & 2x 94's in the other, all four pilots are 34's. Wanted to change some jets butnot the same as mikuni,s. Can jets for this carb be bought ?

[bartman400]

hi mike, the carbs are 4x30mm Aison c.v. ones on this bike. the jet sizes on my bike are ,mains 100/inner,96/outer,,bigger jets for cooling no 2/3 cylinders. as for parts for this bike you could try cms motorcycle parts,very hard to get parts now,o ring seals on jets must be fitted also,refit and balance/tune...hope this helps!!

[mike151]

To be honest, these are a spare pair I bought, which I suspect are from a gk71b,slightly different from the ones on my 71f & with slightly smaller jets than yours. Was going to get these ready & put them on my main bike temporary while I check the ones on the bike. What size are your pilots?

[bartman400]

pilots are 34, never came across other sizes on these jets? make sure they are clean,tiny holes in there! cheers! you can buy them from cms...

[mike151]

Hi, interesting to hear about middle cylinders needing bigger jets, I think someone's cocked up & put the bigger ones in the right hand pair on these.gonna get my main set off again & check them ,cos bikes still not quite right, don't think I cleaned needle jets properly,ie didn't take them out.