Request for Engine Rules Change for Porsche 914-4
#37635 from Greg Mercier · Not recommended · Minutes (2025-02 Fastrack)
Thank you for your letter, but this allowance is not recommended. The boring of stock cylinders to a Prod permitted overbore
appears to be doable with these engines, and having custom pistons made to fit the new overbore is a reasonable and typical
component for building a Prod engine to the existing rules.