off idle stumble fixed but

[petejw]

ive got a 4 into 1 with a fairly open exhaust,
im running 150s atm, but slightly big, going 2 140,
ive run up2 160 mains screamed from 6000 - 8000
at wot, but bogged down at lower revs.
buy urself a drill bit kit from a hobby store, about $35.
with assortmant of bits, makes it a lot cheaper.



wat pilots have u got, hav u got the needles shimmed?
im running 38 pilots
needle shimmed with 3 washers.

[red bandit]

I work in a machine shop, no need to buy drills.
I have 38 pilots. No shims.
I like to have diff jets so I can go back if I want to. Once you drill there's no going back. Not knocking you. Just diff.

[AlanB]

Hi Guys,

If you are drilling jets and go too big, you can solder 'em up, and start again!

Don't fill the entire "cavity" in the jet; the internal shape need to remain, just try to block the actual hole.

AlanB

[egsols]

Hey Pete,

Just thinking.....are those keihin's used on a specific bike? If they are, have you checked if there is a forum for them? Maybe someone else has had the same issues