Check out A-main results from O'Donnell race last weekend www.revrace.com
Brian Thomas, Ron Calangi and Mark Cruz were using Palmaris engines and Robbie Collins was using Murnan X12. Just check lap time and it will be very good idea which are the fastest motors are and most reliable. We run them at any temp with no performance or life affecting (up to 350F).
But the best motor and the best run was done by Darin Ishitani-JP factory driver.
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