View Full Version : high compression piston?
300EXrider02
07-29-2002, 05:24 PM
how can this help? how much money about do they run at for a 2002 300ex? are they hard to install? worth it?
honda250xrider
07-29-2002, 06:51 PM
they cost about 100$ at least mine did it was a weisco high compression piston 12:1 yes it helps and i think it was worth it if you are willing to spend the money for it
Buzzsaw
07-29-2002, 07:07 PM
What type of fuel do u run with that 12:1
Blake24
07-29-2002, 07:32 PM
A piston alone isn't gonna do alot.....you need a cam and such to compliment it
honda250xrider
07-29-2002, 09:30 PM
yes it helps alot with cam bigger vavles bored ported and such alone it doesnt do much but when u have these all together u will find a huge gain and i run race fuel right now
chris29
07-29-2002, 10:10 PM
with a 12:1 piston you have to run 110 octane
"BLAHH"300!!
07-30-2002, 03:41 PM
i'm about to go into my motor also, i wanted to know what to get and how much it would cost...i asked for his opinions' on everything...here's what he said....
You could put a high compression piston in it for $85, a cam for $150, valve springs at $105 and an oil cooler at $95. This won't outrun a 400EX - you would have to go to a 330 kit and ported head with a good pipe. Also, you will need to modify your black box for another $85 to get rid of your rev limiter. No matter which way you go with our products, they are very reliable especially when you put an oil cooler on it.
Mickey Dunlap
i believe thats what i'll be doing in the near future...tottal is $520.00 WITHOUT instalation
Buzzsaw
07-30-2002, 07:34 PM
I'm doing a 318 on my 300 it's going to be $650 piston, cam, cam springs, port and polish and labor
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