If REM Polishing is out there in Spec Miata it needs to be stopped. It’s an obvious cheat and is easily protestable. I have bought many used racing parts (not Spec Miata) on EBay that have been REM polished and it is a VERY obvious modification.
SPEC MIATA RULES - GCR 9.1.7 page 657
C. AUTHORIZED MODIFICATIONS
The following items represent the only modifications and safety items permitted and/or required on Spec Miata automobiles other than safety items as required in Section 9.
Neither alterations to the finish nor deburring is listed as an allowed modification.
C. AUTHORIZED MODIFICATIONS continued – GCR page 657
“Assembly, rebuild, and refurbishment procedures, and all associated dimensions must adhere to the published factory service procedures, except as otherwise stated in these rulesâ€.
Neither modification to the finish nor deburring is a part of the “refurbishing procedures†in the factory service manual.
C. AUTHORIZED MODIFICATIONS, continued – GCR page 658
“If the factory manual or these rules provide only a partial specification or no specification at all, the Mazda parts may not be modified beyond what is allowed in these rulesâ€.
Neither modification to the finish nor deburring is listed as an allowed modification.
C. AUTHORIZED MODIFICATIONS, continued – GCR page 658
“Compliance of such parts will be determined by comparison to new parts delivered by Mazda. Other approved parts with only a partial specification or no specification available in these rules may not be modified. Compliance of such parts will be determined by comparison to new parts from the supplierâ€
The phrase “comparison to new parts†in this rule is not limited to measurements made with tools. The phrase “comparison to new parts†doesn’t require the tech inspector to determine the procedure used to modify the part, or to what degree the part is modified.
Polishing surfaces and deburring is not a listed or allowed modification in these rules or the factory service manual.
REM polishing is extremely expensive, a competitive advantage and illegal in SM. I hope the tech inspectors know what they are looking for in transmissions and differentials at the Runoffs. Young racers trying to use SM as a stepping stone to a career in professional racing have to be content running at a disadvantage or taking a chance using illegal modifications that could jeopardize their career. It may take a protest to bring it down.