carb problems

[Hammer trx450r]

what is the new needle for? Is it thicker for the fat jet that im putting in? Why should we break down the bike to change needle if its running fine? What are the pros and cons of this?

[Hammer trx450r]

By the way its for my buddies Sparks pipe on his 450r. He wants a good reason to take it apart when its running fine.

[Hammer trx450r]

common guys i need help

[PJK 450R]

The needle jet from the HRC kit?

[PJK 450R]

I had to rejet when i got the CS pipe. I went to a 190 main(f185),50 pilot/slow(f48),5th clip on the HRC needle(f 3rd), and 2 1/2 turns on the air/fuel screw. That got rid of the throttle off deceleration popping that i got when i installed the pipe.You say yours runs good so i guess if it aint broke dont fix it. Hope this helps.:D

[PJK 450R]

PS. Where in NJ?

[Hammer trx450r]

blackwood area and thanks

[Hammer trx450r]

the needle is stock(no hrc) and the one they gave him with the sparks pipe is the one im putting in

[PJK 450R]

I dont remember the needle #s,but i think when you up the main considerably,118 is stock,185 with the HRC kit ,the stock needle is too small. But id be lying if i told ya any more than that,Sorry
PS do you ride at Chatsworth?

The needle is easy to change. Just take the 4 bolts out of the plastic on the tank. Just loosen up the ones at the bottom under the front fenders. Then pull the plastic don't an inch or so and take the 2 bolts holding the tank down. Then take the 2 straps that hold the rear of the tank down. Swing the tank out of the way. You don't have to take the fuel line off. Unbolt the top off of the carb take out the screws holding the cover for the needle. Then just pull it out.

[PJK 450R]

Pilot was a little harder>

[Hammer trx450r]

Originally posted by TRX450R_Racer
The needle is easy to change. Just take the 4 bolts out of the plastic on the tank. Just loosen up the ones at the bottom under the front fenders. Then pull the plastic don't an inch or so and take the 2 bolts holding the tank down. Then take the 2 straps that hold the rear of the tank down. Swing the tank out of the way. You don't have to take the fuel line off. Unbolt the top off of the carb take out the screws holding the cover for the needle. Then just pull it out.

I did mine with no problems but my buddy stripped out the screws in the slide:(

[Hammer trx450r]

Originally posted by PJK 450R
I dont remember the needle #s,but i think when you up the main considerably,118 is stock,185 with the HRC kit ,the stock needle is too small. But id be lying if i told ya any more than that,Sorry
PS do you ride at Chatsworth?

Actually i might be there Sunday if i can fix this carb for him. By the way welcome to Exriders:cool:

[Silverfox@C&DRacing]

The new needle is tapered differently and will give proper fuel management in the mid range, which is need in the increase flow of the new exhaust.

[PJK 450R]

Ill be there sunday until about noon with a buddy with a yfz.See ya there.
:macho

[450 Racer R]

Mine stripped too. Anyone else have a problem with this? Any suggestions on getting the screws out?