compression on 1956 7.5 fleetwin

oldboat1

Fleet Admiral
Joined
Apr 3, 2002
Messages
9,612
more important cylinders are fairly equal (w/i 10%). Can run OK on lower than expected compression -- what are you getting?
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
If I remember correctly, around 85 psi. But that isn't written in stone. In fact it isn't even written in the factory service manuals.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
I would say 85 is a pretty accurate measured mile.

Most of mine are anywhere from 70 (low end) to the best was about low 90s. 85 about average. As stated, ensure they are equal though. All gauges read a little different.
 

oldboat1

Fleet Admiral
Joined
Apr 3, 2002
Messages
9,612
in High Trim's wheelhouse here with your Fleetwin. Make your tests and post results as you go.
 
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