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Ian Wright

Nov 10, 2019 - 12:25AM

Re: BSA M20 1942 piston height

How far below the top of the cylinder is the piston?...If it's 9mm (.354") you may have an M21 piston fitted...Ian

email (option): ian@wright52.plus.com

Marcel Fekete

Nov 10, 2019 - 10:04PM

Re: BSA M20 1942 piston height

Thank you for your response. I measured 5, 42mm. In my opinion, this is not the standard BSA piston. It will be a modified piston from the car. Or something like that.

Many thanks Ian

email (option): marcel.fekete@mpsa.com