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esr 310 compression?
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Posted by: skyhighatv

just got done breaking in my new esr 310,unported,it feels pretty much the same as my ported 265 that had 220psi. my question is just after break in im pumping up to 190 psi on the esr build. i was just wondering if you guys are doing any head mods to the esr heads to bump up compression? i do plan on having neil port my cylinder when i put a new piston in. i run a 38a/s 180 main, 50 pilot, middle clip,trx 6 pipe and open/cut box and k&n and i still walk away from banshees w 18's and 14/36 gearing.

Posted by: redrooster310r

yo ... neils the shizzle.... he'll prolly say 220 or 230. my 350 iz at 200 and its a big dif from esr 185 stock psi

Posted by: Aceman

You don't mod ESR heads, you change the domes in the them for different compression ratios. Really no way to know what your compression should be without knowing what dome you have.

Posted by: EXtreme-

ESR could have set you up with a different dome when you ordered it. You'll need to change it out, but kiss the pump gas goodbye.

That thing's pushing 50 horses with another 3 with a port job. What are you trying to do with that beast?

Posted by: skyhighatv

sorry forgot to say that im running their race gas dome. i mostly play ride witha lot of moto and the occasional hare scramble.