Need help with jetting

[BaNsHeeJuNkEy]

Ok i need to getting my quad started but don't know what jets i should start with. everythign done to my quad is in my sig. as far as the motor internales not positive but ran strong before redoing everything elsa. any help would be great want to try starting it this next weekend.

 

o i am roughly around sea level to 500.

Edited December 16, 2007 by BaNsHeeJuNkEy

[BaNsHeeJuNkEy]

some one please help i want to go riden this weekend and don't feel like starting it and it is to lean.

[BaNsHeeJuNkEy]

ok can someone please help me. started it today but it don't want to idel unless the chocks are on and i give it a little gas. running 93 octane. can someone please let me know were i should be starting for a main and low get,

[brian]

did you just put those carbs, filters, and pipes on?

do you have any porting work done?

if so, what kind of porting was done ?

 

first get it to idle.........

 

If it will only idle with choke and throttle, go up one

to two sizes on the pilot jet. you should need to use the

chokes when the engine is cold but not once it warms up.

also the abps screws should be 1 1/2 to 2 turns out. from there

you should be able to adjust the idle with the idle speed screws.

no throttle should be needed to keep it running.

 

then adjust the midrange..........

what is the needle position?

 

then adjust WOT..........

 

do yourself a favor and just adjust one circuit at a time. keep asking questions

and answering ours and you'll have it running pretty quick.

[BaNsHeeJuNkEy]

did you just put those carbs, filters, and pipes on?

do you have any porting work done?

if so, what kind of porting was done ?

 

first get it to idle.........

 

If it will only idle with choke and throttle, go up one

to two sizes on the pilot jet. you should need to use the

chokes when the engine is cold but not once it warms up.

also the abps screws should be 1 1/2 to 2 turns out. from there

you should be able to adjust the idle with the idle speed screws.

no throttle should be needed to keep it running.

 

then adjust the midrange..........

what is the needle position?

 

then adjust WOT..........

 

do yourself a favor and just adjust one circuit at a time. keep asking questions

and answering ours and you'll have it running pretty quick.

 

 

 

ok the exhaust was on the bike when i got it

carbs reeds and intakes are new just put them on. only got the bike to run once with them on but my given it gas.

 

as far as port work was told just a clean up port that is it and i think it is .20 over it was a lot fast then a stock shee.

also i have a timing plate but it is at zero for now till i get it running.

 

but i am going to go and put a bigger pilot in it and adjust the screws to what you said and see what happens. then i will post wiht news.

[Michael Jackson]

does your signature need to be 2 pages long?

[BaNsHeeJuNkEy]

ok was just out side playn around with.

 

the frist time i got it started it had this for jets

 

pilots 55's

mains 170's

needle 3rd clip CGL

 

 

i just tryd

 

60's

170's

3rd clip CGL

 

and not i can't even get it to start has new plugs in it too.

 

and jackson i can make it a little shorter i was bored

[brian]

i had you go the wrong direction the first time.

i didn't pay attention to the jet sizes you had listed.

it sounded like it was lean but it is not.

 

that pilot is way too rich for your setup

i run 35mm pwks on a 4 mil with K&N pods and CPI inframes

1200 feet above sea level at 30-40 degrees a 42.5 pilot is just

right for me. also running a 152 main

 

at sea level you should need more fuel, but you have a unis in

the air box so that is limiting your air intake.

 

you could lower to a 45 or 47.5 (maybe lower) pilot and it will start easy.

also you could lower the main into the 150s and be closer.

 

try it out and let me know whats up.

Edited December 31, 2007 by brian

[BaNsHeeJuNkEy]

i had you go the wrong direction the first time.

i didn't pay attention to the jet sizes you had listed.

it sounded like it was lean but it is not.

 

that pilot is way too rich for your setup

i run 35mm pwks on a 4 mil with K&N pods and CPI inframes

1200 feet above sea level at 30-40 degrees a 42.5 pilot is just

right for me. also running a 152 main

 

at sea level you should need more fuel, but you have a unis in

the air box so that is limiting your air intake.

 

you could lower to a 45 or 47.5 (maybe lower) pilot and it will start easy.

also you could lower the main into the 150s and be closer.

 

try it out and let me know whats up.

 

ok i am going to get some more pilot jets don't have any that small.

[brian]

did you buy those carbs from 1dir racing in california ?

they had me way too fat to start off too.

i had to go buy different pilots and mains as well.

i think they go fat on purpose so their setup doesnt burn up your

motor and cost them big $$$ to fix it.

[BaNsHeeJuNkEy]

na i got the off ebay from carbpartsstore. they gave me some jets but not the ones i need.

 

55 and 60 pilots

170,165,155 mains

[brian]

yeah, sounds like the same kinda deal as 1dir racing.

they are on ebay too.

[dajogejr]

Where are you guys getting your pilot jets at?

Keihins go full sizes, not halves....

 

i.e. 40, 42, 45, 48, 50, 52...and so on. They end in 0, 2, 5 or 8.

If you're getting off brand jets with half sizes, get genuine Keihin jets, that could be part of your problem.

 

I agree...60 is bigger than we use on methanol bikes with BIG carbs..

Mid 40s is where I'd try...

 

42, 45 and 48.

Probably 148 to 155 on the main...

 

Could you please shorten your sig up...we don't need to know what kind of brake pads and rotors you are running....

[BaNsHeeJuNkEy]

Thanks a lot i am going to call jeff tomorrow and get some 42,45,48 and 50's so i have them. and some mains. i haven't been using off sizes i have only tryd the ones i have and the are kehin jets just to big from what you are sayn. once i get the new ones i will try again. once i try the new ones i will let you know how it is thanks a lot guys.

[BaNsHeeJuNkEy]

Ok guys i got some jets in yesterday. i put 48 pilots in and it is starting a lot easier my screws are 1 1/2 turns out. idel screws have been played with a little but still wont idle unless i give it a little gas it slowly dies down. should i go to my 45's also stumbles a little. and i got 170 for maimns still just tryn to get it to idle would i be safe just tryn the 148. starts on like first kick sometimes second.

 

 

and one thing i need to know how do you know if your idel screws are matching.