From DeSoto, MO

[earz]

I sent him a link to this thread, but he's in the middle if building a house so it'll probably be a while before he does anything.


That seems like a pretty big jump on the pilot circuit - especially if it idles ok. I would just try shimming the slide needle with a thin washer between 7 & 9 on the diagram below. This is the same as moving a needle clip (on adjustable needles). Take the plastic spacer (#9) to the hardware store (or Radio Shack #64-3022 <--clicky) and find some washers with as close to the same ID/OD of that spacer. You can use the washers (adding more if needed) to effectively raise the needle - resulting in a richer mixture as the slides start to raise (right off idle - 3K rpm).



If you haven't already, check out the CV (constant velocity) carb tuning guide by factory pro.

CV Carb Tuning Procedures

[fightingamish]

I appreciate the help. The reason for the big jump on the pilot jet is because the stock pilot jet on the GSXR is 32.5 and the stock pilot jet on the CB750F is 35. From what I have read a lot of people will bump their stock PJ from 35 to 37.5 (or 38) because from the factory they tended to run a little lean, so that is why I am doing that and I am running pods so it's already a little bit leaner anyway. I might have to try the needle shims before my PJ's get here just to see if that helps. I will say that once the bike has been running 15+ minutes, it runs just fine with only slight hesitation at about 2000 rpm.