SX/SXi/SXi Pro 42 keihin racing sudoku jetting question for stock 750 sx blue carb

[Jayski]

I picked up a Blue keihin sudco racing carb i want to put on my 750sx, the ski this carb is intended for is bone stock and as the doner ski this carb came off was fitted with a number of mods inc pipe i want to know what the Main and piliot jets required would be for a Bone stock Boat with a S/S prop being the only mod. Info required ASAP if possible Thanks!

 

[kevbo]

The pilot should be 82 with stock spring. A 150 main should allow the top screw to run about 1 turn out, power tune the top screw for best performance.

 

[Jayski]

The pilot should be 82 with stock spring. A 150 main should allow the top screw to run about 1 turn out, power tune the top screw for best performance.

thanks mate, you have run this carb yourself on a stock setup?

 

[kevbo]

thanks mate, you have run this carb yourself on a stock setup?

Yes many times, the Keihin 42 is not oversized on a 750 so its easy to tune. There are leftover PJS single 750 manifolds for Keihin on ebay. These have smaller passages and make response and tuning better than the stock manifold. Theres not much to change with additional mods. Everything will need to be a little richer with a pipe.

 

[WFO Speedracer]

I never could figure out those Soduku's , quite puzzling