vizio Posted July 10, 2012 Report Share Posted July 10, 2012 Can some one tell me wish exhaust bb or sb runs better for this setup ??? Bike its setup for asphalt drags ... Now I have small bore inflame CPI and the bike runs good !!! I'm trying to change to drag pipes oof and want to know if i would get more power from bb and if im suposed to run big borefor this motor !!!! Thanks for the help ...... Quote Link to comment Share on other sites More sharing options...
Nightmare Posted July 10, 2012 Report Share Posted July 10, 2012 Anything 535cc and over require bb pipes. your good with the small bores Quote Link to comment Share on other sites More sharing options...
SandmanPNW Posted July 10, 2012 Report Share Posted July 10, 2012 Now I have small bore inflame CPI and the bike runs good !!! You don't like the inflames? Quote Link to comment Share on other sites More sharing options...
thatguy Posted July 10, 2012 Report Share Posted July 10, 2012 I ran bb on my 7m cub and it ran just as good as all the other 7m-10m cubs around Quote Link to comment Share on other sites More sharing options...
vizio Posted July 10, 2012 Author Report Share Posted July 10, 2012 I'm looking to buy a set of drag pipes out of frame .... Don't know what bore to get .... I'm keeping my inframes .... What i need to know what would perform better big bore or small bore for this motor .... Thanks for the help guys been looking everywhere for info !!!! Quote Link to comment Share on other sites More sharing options...
vizio Posted July 10, 2012 Author Report Share Posted July 10, 2012 Also CPI says for their pipes anything over 440cc should use their big bore pipes ...that's another thing that makes me incline to bigbore Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted July 11, 2012 Report Share Posted July 11, 2012 Also CPI says for their pipes anything over 440cc should use their big bore pipes ...that's another thing that makes me incline to bigbore For your size motor.....BB if your going with CPI's. SB if your going with Shearers. The SB Shearers in the new style OOF pipe will make 5HP more with that size motor. Quote Link to comment Share on other sites More sharing options...
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