Super Jet Jetting 650/701 (6m6 with 701 cylinder and B pipe)

[Soul Man]

Been searching for a while and can't find an answer.

6m6 case with stock 650 carb (SBN44?). Putting on a 701 cylinder, stock head, Factory B pipe.

Case comes back from machinist tomorrow and want to assmeble and ride this weekend. What jetting specs are people using for the 650/701 motors?

 

[Soul Man]

Anybody????:bump:

 

[trojoro]

i would go with factory pipes recommendation and go from there

 

[Fro Diesel]

Is it ported? I have a 44mm on a full port 6m6 w701 pistons. 150 main 2.0 n/s shiny silver spring. 115 pilot
sent from Fro Diesel using tapatalk2

 

[Soul Man]

I'm not ported, but that should help.
I guess the carb is the same (44mm) for the 650 and the single carb 701 and the Factory pipe recs for single carb 701 will be close, but wasn't sure how much the case/reed difference would matter.

 

[kevbo]

I'm not ported, but that should help.
I guess the carb is the same (44mm) for the 650 and the single carb 701 and the Factory pipe recs for single carb 701 will be close, but wasn't sure how much the case/reed difference would matter.

Use a 150 main and power tune the top screw. Set the popoff around 25psi and adjust 1/4 throttle with the pilot. 115-125 pilot is the normal range, make the engine sputter slightly around 1/4 throttle.