Just a follow up on Frank's custom rings. I had an Irvine .61 (dykes ring). motor is like new but the original ring did not seem like it seated correctly. I wasn't really happy with the motor.
I sent away for a custom ring fom Frank. Motor now runs as well as any .61 that I ever had now.
My only regret is that I was rebuilding a OS FSR 40 and a Saito at the same time. I wish I had order rings for those engines. At some point, I will probably go back and order several rings from Frank. They really do seem to be that much better then stock ring. Just my opinion.
I can only speak from my experience, but if you are rebuilding an older motor, consider buying some rings from Frank.
[email protected]