highroller355 Posted January 16, 2009 Report Share Posted January 16, 2009 should i go with cpi"silenced or shearer silenced, motor is 4 mil 421cub pretty much stock porting, just a little clean up port done, 20cc domes from fast, 39 pwks with billet bowls,and pod filter, +4 timing going to +7 , override straight cut gears, comp is 185 each side, what out of frames do you think i would benefit the most from? me and bike weigh total around 600, do mostly dragging 1/4 and 1/8 mile. or if there is another kind of exhaust that i should look into , as long as it is silenced. Quote Link to comment Share on other sites More sharing options...
banshee332 Posted January 16, 2009 Report Share Posted January 16, 2009 should i go with cpi"silenced or shearer silenced, motor is 4 mil 421cub pretty much stock porting, just a little clean up port done, 20cc domes from fast, 39 pwks with billet bowls,and pod filter, +4 timing going to +7 , override straight cut gears, comp is 185 each side, what out of frames do you think i would benefit the most from? me and bike weigh total around 600, do mostly dragging 1/4 and 1/8 mile. or if there is another kind of exhaust that i should look into , as long as it is silenced. I Like shearers but it also depends who you motor builder is Quote Link to comment Share on other sites More sharing options...
625banshee Posted January 17, 2009 Report Share Posted January 17, 2009 Both cpi and shearers work good, but like brad said it depends on ur builder and who ported it. Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 17, 2009 Report Share Posted January 17, 2009 I'd ask jeff & why he choses them ( has he dyno'd multipal pipes on the same motor, to see what's the best ect...) not to hijack but... what about pro's & cons to left, right, 1 outa each sides (preferences & why & mounting /breaking problems ect) Quote Link to comment Share on other sites More sharing options...
highroller355 Posted January 17, 2009 Author Report Share Posted January 17, 2009 I'd ask jeff & why he choses them ( has he dyno'd multipal pipes on the same motor, to see what's the best ect...) not to hijack but... what about pro's & cons to left, right, 1 outa each sides (preferences & why & mounting /breaking problems ect) hijack away. just forgot to ask those questions, i know both out left side makes it easy to do clutch adjustments or changes, and also no one ported my motor as of now just a quick clean up was done Quote Link to comment Share on other sites More sharing options...
banshee332 Posted January 17, 2009 Report Share Posted January 17, 2009 hijack away. just forgot to ask those questions, i know both out left side makes it easy to do clutch adjustments or changes, and also no one ported my motor as of now just a quick clean up was done cpis come on sooner but fall off sooner to. it just really depends on what you want then. I still say shearers.lol Quote Link to comment Share on other sites More sharing options...
trex banshee Posted January 19, 2009 Report Share Posted January 19, 2009 I love my shearers Quote Link to comment Share on other sites More sharing options...
00tbanshee Posted January 27, 2009 Report Share Posted January 27, 2009 shearer all the way Quote Link to comment Share on other sites More sharing options...
2001Stroker Posted January 27, 2009 Report Share Posted January 27, 2009 Doesn't Jeff port for Shearer? Quote Link to comment Share on other sites More sharing options...
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