Stock compression on 1984 Johnson 75hp?

K

kryan2

Petty Officer 2nd Class
Joined
Nov 23, 2008
Messages
193
They had two heads available...high compression and low.

My 3cyl put out 150psi on all 3. What was the original out of crate compression?
 
O

orbanp

Petty Officer 1st Class
Joined
Jun 26, 2011
Messages
324
Re: Stock compression on 1984 Johnson 75hp?

I think OMC never published compression values for their motors, just tolerance from each other.
The 150psi on all three certainly looks excellent. I would not worry.

Peter
 
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