Jetting brand new carb

nofxfan125

Member
May 9, 2009
444
5
60
Freeland, PA
I just bought a Keihin PJ34 carb, the upp intake boot, and the airbox adapter from vito's. I need to know where I should start with jetting this carburetor. I have a 240 kit and a +4 stroker crank. Stock airbox with lid removed and it's an FMF gold fatty pipe.

What size main jet and what size pilot jet should I start with? Also, where should the needle clip be placed?

According to the vito's website, this carb is calibrated to the CY240 big bore kit, so I'm guessing it should be relatively close to where I need it to be.

I'm new to this, so PLEASE help me out if anyone can!