compression too high?

medic2051

Petty Officer 2nd Class
Joined
Aug 11, 2003
Messages
150
compression readings on johnson 50esl75 were 150, 152. Seems kind of high. Is that possible?
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: compression too high?

Oh, yes. That is possible and it does not indicate any problem.<br /><br />There are too many variations in guages and in methods to set a psi and say that "this is what it should be".<br /><br />The important number is the difference among cylinders.<br /><br />I would say that you have a mechanically excellent Johnny there. :)
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: compression too high?

the 72 50 hp models will read about 180, its the way the heads were designed.
 
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