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View Full Version : Hi comp piston what one ?



levi624
07-05-2008, 06:53 PM
I have been think about going to a hi comp piston. I am going to go with JE pistons but what one? Should I go with the pro series or the standard and if I go with the pro series do I want the 3 ring or the 2 ring? What comp ratio should I go with (I race WORCS) 11.5:1 , 12.0:1 or 12.5:1 (if I go with the pro series then it will be 12.5:1) ? I don't mind running race fuel but I want it reliable. I'm doing the porting when I put in the hi comp piston.

jomama
07-05-2008, 08:20 PM
ive got a couple JE pistons. I got a 3 ring and a 2 ring. The two ring is gunna give you more power but will take away the reliability. both of mine are 13.5:1 comp. If its reliability you want go with like 12:1 and 3 rings. also i hear the wiesco 3 rings a super reliable.

07-06-2008, 05:49 AM
CP 12:1 3 ring piston.

honda4life72
07-06-2008, 09:28 AM
Originally posted by TRX450R_Racer
CP 12:1 3 ring piston. word. also the guy who ported my head and stuff told me cp pistons are better than most other piston because they expand in the cylinder faster. reducing piston rattel on start up.but that's just what he said. and he drag races pro stock street bikes :devil:

tooanxiousii
07-06-2008, 11:59 AM
Go with the DRG piston. You will love it!

esr250r86
07-06-2008, 12:57 PM
Ive had no problems with my 13:1 Je's..they are running great..2 rings

Jshep450r
07-06-2008, 07:40 PM
i have a high comp cp piston 15.1 if your interested i can give u a awsome price =P

venom450r
07-07-2008, 06:26 PM
venom stock bore 12.5:1 runs off 93...no need for race fuel

400exrider707
07-07-2008, 10:01 PM
My JE fell apart inside my motor and caused about $1000 worth of damage. I wasn't happy. I'm running a custom CP now. Baldwin to be exact.