twinning Posted July 2, 2014 Report Share Posted July 2, 2014 Hey all I'm in the market for some new pipes I got a +4mm cub trail porting 35mm pwks . most of my riding is trail or track with the odd day at the dunes. What can you recommend and why ? thanks for any replys. Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted July 2, 2014 Report Share Posted July 2, 2014 trail ported cub haha, did they weld up the ports ? what pipes you got now ? cpi's would be ok, nice down low and will sing up top. with the low mid pipes (pro circuit, toomey, dmc, fmf) ya gonna have some bottom end but will kill the top end a bit. cpi + stock carbs/28's would give you some decent down low. i dont even really know where to start with a trail ported cub, Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted July 2, 2014 Report Share Posted July 2, 2014 CPI, SLP or Sniper. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 4, 2014 Report Share Posted July 4, 2014 ^ gave up on rockets? Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted July 4, 2014 Report Share Posted July 4, 2014 ^ gave up on rockets? Good pipes but nearly impossible to find anymore. The guys that have them usually hang onto them. Quote Link to comment Share on other sites More sharing options...
twinning Posted July 10, 2014 Author Report Share Posted July 10, 2014 thanks for the replys . i got fmf on now . the bottom end is screaming up to about mid then she flattens off. the way i see it the fmfs are built to give a stock 350 more bottom end so im thinking that this is multiplyed when used on a bigger engine so this gives me screaming bottom through to mid but then they drop off too quik and way too early ??? . i think ill try the cpi's should i just get the small bore ? Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 10, 2014 Report Share Posted July 10, 2014 Small bore for your application for sure. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted July 10, 2014 Report Share Posted July 10, 2014 thanks for the replys . i got fmf on now . the bottom end is screaming up to about mid then she flattens off. the way i see it the fmfs are built to give a stock 350 more bottom end so im thinking that this is multiplyed when used on a bigger engine so this gives me screaming bottom through to mid but then they drop off too quik and way too early ??? . i think ill try the cpi's should i just get the small bore ? It's true that a drag pipe will give you more top end, but you shouldn't really feel a drop off like you are describing. I have bikes with Shearer, CPI and FMF's. My FMF bike could make 5-7 more HP ported. with a drag pipe (With DUNE port. Less gains with woods/trail/mx porting) but would lose the useable bottom end that I want for trail riding and would leave me shifting a lot more to keep it in the powerband. The FMF FATTY's can support up to 70HP while still having killer bottom end. Your powerband issue sounds like a different issue. I would suggest looking at jetting, dome shape, filter set-up or ignition issues as I think they are the more likely culprits. Not saying you won't like SB CPI's......but if you have some undiagnosed issues.....they will only carry over to your next set of pipes. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted July 10, 2014 Report Share Posted July 10, 2014 Oh Crap!... I just saw you listed it is a 4 mill CUB... FMF pipes have no business being used on a 4 mil cub. Neither do TommeyT-5's. Both of those pipes kill the power of a cub! Quote Link to comment Share on other sites More sharing options...
twinning Posted July 10, 2014 Author Report Share Posted July 10, 2014 cheers for your replys yeah i kind of figured the fmfs were killing me. lol. so cpi's it is thanks again. Quote Link to comment Share on other sites More sharing options...
bluebanshee98 Posted July 11, 2014 Report Share Posted July 11, 2014 Get some snipers Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted July 11, 2014 Report Share Posted July 11, 2014 Get some snipers Quote Link to comment Share on other sites More sharing options...
Deadbeat Posted July 11, 2014 Report Share Posted July 11, 2014 if its been sold as trail ported maybe it isnt a cub at all Quote Link to comment Share on other sites More sharing options...
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