jetting

[dirtrider77]

to go along with my backfire question earlier that some have read, i have a 134 main jet, and the jet under the float is a 32...and needle is on the 2nd notch from the bottom

are these the only jets i need to worry about when adjusting things??

right now my quad runs fine but backfires a little on decel and its 3 turns out on the fuel/air screw

i have a 13:1 piston, port and polish, hmf slip on, k&n with outerwear and am running a lid

i am going to switch and run no lid, as well as use a uni with an outerwear

any suggestions??

(also what is the jet called that i said was a 32)

thanks

also im roughly 800 ft above sea level

[d3ktrix]

The 32 isn't one of the ones u will need to change.

Just the main and the pilot.
The pilot looks like a flat head screw right infront of the mainjet. You have to take the float bowel off the carb to see it / remove it.
The stock size pilot for you 04 is a 48.

You will have to increase both the main and pilot when you remove the air box lid.

[dirtrider77]

ok i tried to get the pilot out and i had a screwdriver the perfect size and i was trying real hard to pop it out and it wouldnt budge, if i keep on i will prolly strip it..any tips

and how much should i go up to a 140 main and a 50 pilot?

[d3ktrix]

If the pilot jet has never been removed since it came from the factory it can be stuck in there pretty good.
Just press as hard as u can and turn :P
If anything have someone tap on the end of the screw driver handle while u turn it, works like a ghetto impact driver.

Since your head is ported, recommending jetting is iffy. Depends what the porting is like.

But the baseline standard for a setup like yours would be a 180-185MJ and a 50 pilot.

[dirtrider77]

ok so if i need to go up to a 180-185 then how come the 134 in it still lets the bike run ok....??

im just wondering cuz im new to all this jetting stuff

thanks!!

[d3ktrix]

Originally posted by dirtrider77
ok so if i need to go up to a 180-185 then how come the 134 in it still lets the bike run ok....??

im just wondering cuz im new to all this jetting stuff

thanks!!

Removing the air box lid has the biggest affect on air flow compared to ANY other single mod you can do to these bikes.

[dirtrider77]

gotcha!!

so i should be able to feel the difference

and does this sound ok

main jet = 180-185

pilot = 50

needle = 2nd clip from bottom??

thanks

[d3ktrix]

Sounds fine.
Once you see how it runs after that, you can adjust the A/F screw from there.

[dirtrider77]

k thanks

[dirtrider77]

also i am buying individual jets from jets-r-us (im low on money)

so far i have got a 50 pilot, and i need to know whether to get a 180, 182, or 185 main....thanks

[d3ktrix]

Id recommend getting a 180 and a 185.

[dirtrider77]

k thanks, and i start with the 185 correct? or does it matter

thanks