sly400ex
11-29-2005, 10:31 AM
Time for more power! I have a 2001 400 that can use a little new life.
Last year I let this girl ride my quad and she made it scream in pain by riding it in 1st gear wide open for a good amout of time. Now it burns about a 1/2 quart every few hours.
So my question/s is.
What is the absolute highest compressioon piston I can run on 92 octane?
What else should I need besides a piston, cam, gasket kit.
Will I need rockers/valves/seals?
I want to go with a hot cams stage II. I still want my bottom end with more top.
A 416 piston kit, Ross most likely.
cometic gasket kit, but should I get it for a 400EX or XR400...I heard the XR400 is a little thinner yielding higher compression. I figure my motor has a ballpark or 1500 hours on it, just fyi. Thanks!
Last year I let this girl ride my quad and she made it scream in pain by riding it in 1st gear wide open for a good amout of time. Now it burns about a 1/2 quart every few hours.
So my question/s is.
What is the absolute highest compressioon piston I can run on 92 octane?
What else should I need besides a piston, cam, gasket kit.
Will I need rockers/valves/seals?
I want to go with a hot cams stage II. I still want my bottom end with more top.
A 416 piston kit, Ross most likely.
cometic gasket kit, but should I get it for a 400EX or XR400...I heard the XR400 is a little thinner yielding higher compression. I figure my motor has a ballpark or 1500 hours on it, just fyi. Thanks!