Reply To: 1935 evinrude sport four

[Randy in Tampa]

I have a 31 sportfour and Garry Spencer worked on it with me and he used brown paper grocery bags also like Tom did, i’m sure you can buy thin gasket material also from the auto parts store to use, I don’t think it’s gonna make a difference in compression if the gasket is slightly thicker ……🤔

Rotary valve Johnson’s Rule!