my tach reads the fuel cut @ 9,000, which i know is at least off by 200 rpms

 

Stock Type R valve train can handle up to 9000 RPM. can "handle" doesnt mean reliable all the time lol

Anything beyond, good luck man lol

Best bet, buy another motor for about 4Gs, and swap it out yourself and sell the old parts from your old motor.

Probably the best way to save money.

Give Noyan a call.

http://www.noyanusa.com