boring out?

[ommkevin]

what is the best cc to bore it2 what is the best compresion or the piston thing number

[brian-250]

Why do you want to bore it?


id go with a 416 11.5.1 comp. piston.;)

[jak1389]

i would also go up to a 416. (87mm). i would get a je 10.8:1 piston or ross. dont go with weisco, their compression ratios are off for the 400ex.

[ommkevin]

y not bore it out any higher

[2004exrider]

reliability.

[TheRidinLife01]

if you arnt resleeving go with a 416, so that if you do happen to blow it up, you have another bore left before you need to pop in a bigger sleeve. and if you dont want to run race gas, go with a je 10.8 or 11-1 at the most