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Help with jetting


prosser9981

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Hey guys,

I know this thread is seen everyday, but just need a little help to get my bike dialed in. Bike doesn't run quite right, and will be doing a plug chop this weekend. The guy i bought the bike from purchased a jet kit and it's running 340 mains, 25 pilots. Air mixture screws are about 5 turns out.

Does anyone have similar mods with any recommendations of jet sizes?

Mods are;

Toomey T5

K&n filter

K&n air box lid

Reeds(stock cages)

Boost bottle

1/4" reed spacer

Port work

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Stock pilots ok?

No, with your mods, stock pilots are not OK!!

Needle position?

Needle clip middle groove!!

To much main and not enough pilot

27.5-30

300-340

Bring screws in to 1.5

Needle middle position. Toomey needle?

It depends on port work temp and elevation.

All things are a base. Most of what I said will change. But should be ball park

I'm not sure why you ignored sheerider's advice.

There's absofuckinglutely no way your airscrews are 5 turns out.

Try seating them gently and then back them out 1.5 turns.

 

What's your elevation and temp numbnutz??

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