Page 1 of 1

jetting help!!!

Posted: Sat Aug 20, 2011 12:19 am
by guen84
im running a 55 pilot and a 152 main on my 28mm oko, still in brake in so mains fine for now. but scoots boggs out of the hole on the 3 position on needle... if i lower the needle my temps spike when i let off the throttle. so my thinking is i need a different needle??? any imput is appreciated.... set up is below for mini stroker... thanks

Re: jetting help!!!

Posted: Sat Aug 20, 2011 12:30 am
by Bear45-70
So lower the needle and up the pilot jet.

Re: jetting help!!!

Posted: Sat Aug 20, 2011 12:56 am
by wiguy05
Changing out the needle for a different one is only for ultra-fine tuning. You need to get it much closer before you would even consider it.

just my .02

Re: jetting help!!!

Posted: Sat Aug 20, 2011 1:20 am
by bakaracer
the main jet is way to big. drop down to a 145 and see if it gets better.

Re: jetting help!!!

Posted: Mon Aug 22, 2011 9:07 am
by guen84
ok thanks everyone, i had to order some smaller jets, ill let ya know what happens when they get here....

Re: jetting help!!!

Posted: Fri Aug 26, 2011 2:01 am
by bakaracer
guen84 wrote:im running a 55 pilot and a 152 main on my 28mm oko, still in brake in so mains fine for now. but scoots boggs out of the hole on the 3 position on needle... if i lower the needle my temps spike when i let off the throttle. so my thinking is i need a different needle??? any imput is appreciated.... set up is below for mini stroker... thanks
what temps are you running at and what does it spike to? dont drop to that 145 yet. I just seen what your setup is. what do you have the air fuel screw setting at?

Re: jetting help!!!

Posted: Sat Aug 27, 2011 9:23 am
by guen84
bakaracer wrote:what temps are you running at and what does it spike to? dont drop to that 145 yet. I just seen what your setup is. what do you have the air fuel screw setting at?
it can idle all day and never hit over 280, my temps are 350-365 cruzing in the 1/4 to 3/4 throttle area and when i let off, it doesnt really spike if anything it cools.. my air fuel mixture is like 1 to 1-1/4 turns out...