Hello everyone, I'm new to this forum. I know its probably been discussed before and might seem like old news to most of you but I have to know. I am thinking of a CT racing 310 complete power package for my 86 250r. Will I be able to beat a nearly stock (just piped w/ air filter) 450r in a drag race? (apprx. 1/5 mile) Anyone know the hp or torque ratings on a 310 CT-powered R? Any input from you guys would be great. Thanks.
P.S. I am also considering the esr 310 kit as well, its just that the ct kit is a little lighter on the wallet.

 

I am almost positive it would... there were some 310r's down at the drag strip that were waxing YFZ's that were piped and jetted... not sure what brand the 310 kit was though.

 

If others read this and respond then most will have the same opinion as I do. Buy the 310 ESR kit and go with the TRX-9 porting if you do a lot of riding mostly, and go with the TRX-11 porting if you do a lot of racing. If you have it tuned in right then the 450's with just a pipe won't hang. I am not a fan of CT's porting and it's hard to beat ESR's service and reliability.

 

My cousin has an 86TRX with an ESR 310 kit that makes ~55HP on a generous dyno. He also has a 450R with pipe, cam, and CDI but has never had it dyno'd. I have ridden both and can tell you the 310 TRX is quite a bit faster than his 450R.

 

Hey DSengineer, do you know if your cousins 310 esr kit is a power-valve or just the regular 310 kit? And thanks for the replies guys, sounds like esr is the way to go.

 

Looks like your still into old school quads like me. Ok one of my buddies has a 250r and a couple of them have 06 450Rs and one is pipe and jetted. it think what was in the 250r at the time was a 266 big bore kit. with cool head and hinson clutch system and ported and polished. but the 450r could hang just for about first 3 gears and then the 250r would just leave him. LOL then the same day the 250r went boom. so were waiting on the new 270BB kit and sleeve to come in. so the old 250Rs will still turn heads [img]i/expressions/face-icon-small-happy.gif[/img]