Compression

[choclab5380]

I’m trying to find a spec on compression for a 25 hp Johnson. J25eccm thanks

 

[racerone]

No official number listed.------No official test gauge listed.----No official technique listed.------I would want to see about 120 PSI when I test one.-------What is your motor doing / not doing ?

 

[choclab5380]

No official number listed.------No official test gauge listed.----No official technique listed.------I would want to see about 120 PSI when I test one.-------What is your motor doing / not doing ?

thank you. I’m looking at buying a boat with this motor. Cold engine it has 130 psi on both cylinders.

 

[timguy]

Buy it, friend.....nice compression.

 

[Boobie]

Edit.....