Perkins Prima M50 Transmission ratio

Aras Grinius

Would anyone know the transmission ration for a Perkins Prima M50 engine with a Hurth transmission gear ratio?  My prop measure 19".
I'm replacing my engine with a Beta Marine 50 and TCM 60 Tranny (2:1) gear ratio.  To the best of knowledge this should be fine....unless someone has other info.

So with a new engine painted red, I should be faster!  Alot faster than I am now.....

Aras Grinius
Sharki #163 1988

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