new chamber lost botttom end tork

[mike carter 2]

i have a gas bike gt 80 kit on my bike had pretty good tork on bottom end i put a xchamber from a 1979 rm 60 on it lost all tork untill pipe comes in then it will fly over 40 any ideas to get more bottm end

 

[YesImLDS]

Longer header pipe to the expansion chamber should get you a more desirable torque curve with a little less top end.

 

[mike carter 2]

thanks yesimlds kind of hoping for a different adifferent answer the pipe looks so good the way it is i have yet to rejet carb do you think that will help any

 

[mike carter 2]

also now runnig a 36 tooth cog switching to eather 40 or 46 to try to get on the pipe earlyer hopeing this will make it an easy fix

 

[YesImLDS]

thanks yesimlds kind of hoping for a different adifferent answer the pipe looks so good the way it is i have yet to rejet carb do you think that will help any

Rejet the carb and see what she does, but normally to move your powerband down you have to increase the header length and to move it up you shorten it. Hope this helps!