what is the highest comp piston

[6858-400ex]

what is the highest comp piston made for a 400ex

the most i have ever seen on eny atv was 13:5:1

on a 450r in dirtwheels

[400ccBanshee]

This piston things got you thinking, huh. Get your pen and check book. The race gas will be the least of your expense. More fuel, high flow exhaust, Lots of time tuning, and that little air cooled jug won't like it if you don't give it plenty of air flow. Think twice if the power gain will be worth the pain of keeping that little four stroker in tune.

[400exstud]

Think twice if the power gain will be worth the pain of keeping that little four stroker in tune


It seemed like you are kind of dog'n 4-strokes but I have rarely seen a 2-stroke that didn't take more tuning than a 4-stroke

[UglyMotha™]

I dunno what he is but he sure doesn't know what he's talking about :huh

[400exstud]

Who doesn't know what their talking about?

I just said what I said because he had to put in the part about "your little four-stroker" bacause he ownes a banshee.

[UglyMotha™]

I said he DOES NOT know what he's talking about, his post was just a ramble of crap :huh

how hard is it to tune a 4 stroker...... furthermore a 4 strokers is pretty consistent its not something your goin to have to tinker with all time, so what the heck was that comment supposed to mean :rolleyes:

every post he's made so far he's trying to basically tell people its not worth modifying your engine

[400exstud]

I got ya.