compression readings for Evinrude 4hp lightwin

[raczekp1]

Hi.
I'm working on Evinrude 4hp lightwin.
New rings and new( used) pistons.Instaled pistons dont do much play between cylinders wals. Ring end gap 0.15 mm. But compresion after 1 hour run only 90 psi,So what kind of compresion readings someone got in new Evinrude 4hp lightwin or good runing motor?

 

[hardwater fisherman]

My 1978 4hp johnson has 110psi on each cylinder. But as you probably know not all gauges will read the same. 90psi is probably acceptable.

 

[nwcove]

90 psi is fine. if it was down in the 60 zone, then not so fine.

 

[Crosbyman]

all my oldies are mid 70s and up compresssion Wise and work fine especially my 5.5 from 1958.

3hp.4hp.5.5hp 7.5hp

 

[boobie]

Compression is fine. As said, all gauges don't read the same.