Quote Originally Posted by blackshine007
Let me use the term that Honda calls it.... Fiber Reinforced Metal (FRM)Cylinder wall lining. It's really good for for all motor, but a complete disaster for boost. Not to mention that it's an open deck design. And even though you can buy the cylinder brace thing that keeps the sleeves from moving (help me with the name, please!) What's the point of doing all of that? Get a motor that already has a closed deck that is more than capable of holding boost without buying any extra parts. As far as the rev limit.... meh, who cares? 7200 rpm should more than be sufficient for boost. You don't have to rev the bejeebus out of it to make any power. Nice sized turbo + good set of cams and pistons = win.
I guess all those open deck 400whp GSRs arent capable of holding boost then. I guess all the 500-600whp K20A2 open deck motors are about to grenade.

The FR"M" Sleeves are fine, and the FRM is not why they fail. Josh Green is right, the PISTONS are the weak link, just like ANY OTHER HONDA MOTOR.

The Cast Pistons are what fail, NOT THE SLEEVES.

RPM wise, welcome to hondas, they have to be revved to make power, i thought that was common knowledge?

My comment about the F23 was that they have a big stroke, so you have to respect the rev limiter. As long as you stay away from it they can last. Look at EmminoDaGreats car, makes 280whp stock F23 motor but he doesnt run that power every day.

H22s will make more power, they are more rev friendly (9000rpms stock is fine with valvetrain), they are a much better designed and efficient motor.

All these people saying the h22 sucks for boost, have never done one.

They are fine for 300whp and under. Ive seen and done many h22s under 300whp WHEN PROPERLY TUNED last just as long as GSRs