got some questions

[brokeazz250r]

what is the difrence in a pv and a cool head? also i have a 265r i was wandering whenever i re-build it what i could put in it to get more power out of it, without going all out and putting alot of money in it.

[Scott-300ex]

Pv and cool head have nothing to do with each other.;

Pv-Makes your engine thinks its bigger than it is and it makes it think it needs more fuel to run it, so more fuel and air, there is a valve that comes down off the cylinder, hard to explain how it looks, it closes off some of the exhaust port, it gets rid of some of the instant Snap that the 2-strokes have. The pv is in the jug.

Cool Head-Just a regular head you can buy for about $50 and you can decide how big of a combustion chamber you want from 18-24cc or somethin like that.

For power, you can get a higher compression piston, deffinetly port it, jet it right, take off air box lid, pipe it, you prolly already got, gear if for wut you want and hang on.