Lean?

[vspec]

Ok so i just rebuilt my blaster with a WSM cast piston,and now if i give it anymore than half throttle it just bogs. It also idles really high.

 

[vspec]

Bump....

 

[mike11743]

That sounds more like your running rich than lean. What color is your plug?

 

[SpeedBall]

im pretty sure a 240 main jet is to small for a fmf pipe

 

[chazekxt]

lean

when i had my old blaster i had a 280 main and fmf pipe k a n with no lidI:I

 

[vspec]

Would a 290 be big enough?

 

[SpeedBall]

Would a 290 be big enough?

i could not tell you for sure but it sounds about right there are other people on here that know exact jet sizes.. you may be able to call fmf and ask wht jet they suggest to use on their pipe