250r motor

[catch me if u can]

I was wondering what 1986 250r motor puts out the most power but is still very reliable i was thinking about a esr 310 or 330 I just want to smoke my brothers raptor 700 but still be reliable and controlable because i ride trials so just hit me up with your opinion thanks

[fulltiltrider]

Whats done to the raptor? You can build a quick R with the right setup on a stock cylinder, quick enough to handle a raptor.

[trx]

can a stock cylinder with a port and polish bet a piped yfz

[catch me if u can]

the raptor is running on 103 octane full drd exhaust no air box efi controller and geared two down in the rear sprocket he just eats my 450 buy 4 bike links and that has been piped jetted air box computer for timing so i told i was going to beat him with my old school bike but just wondering what top end puts enough power to beat him and still be rideable in the woods and reliable

[catch me if u can]

i have raced my 450against a stock cylinder 250r with port and pipe it is tit for tat it is whoever gets the best start

[catch me if u can]

so witch 250r top end should i get

[trx]

i would get a 310 kit if u want good playing power and racing power


but if u want all race performance get a 330 kit

[bmxnick7]

i have a 310 kit and a craptor is no problem, i raced one with an exhaust and an efi controller