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Piedrafita Technical Clarification


This notice is a clarification and does not make any changes to current regulations.

There have been queries from members considering using the Piedrafita engine in Mono F3.

Regulation 5(7).1 allow for the use of Standard Production Engines as specified.

Regulation 5(7).2 allows for the use of the specified “Piedrafita” engine without modification, with a restrictor as specified and with the original Piedrafita seals intact. Previously issued Championship Technical Bulletin MRC/2016/1 sets the air restrictor aperture size at 28.5mm for Piedrafita engines.

Engines used in Mono F3 must comply with Regulation 5(7).1 OR 5(7).2 OR 5(7).3 as specified in the regulations.

Standard production engine parts and components and Piedrafita engine parts and components cannot be mixed and used together to make a single engine. This would produce a hybrid engine which is neither a standard production engine nor a Piedrafita engine, and a hybrid engine is not allowed.

Please also note that it is not a straight swap to fit a Monoposto compliant Toyota 3GSE Gen 3 engine in to a Piedrafita car as the head is different and changes to manifolds and engine mounts will be needed.

Disclaimer: The above represents only the unofficial view of the writer and not of the Monoposto Racing Club in any way whatsover. Subheadlines and captions are not originated from the named author. We are unable to reproduce results due to copyright reasons. If any pictures are copyright and the owner wishes them removed please email us.