how much compression difference is ok

[123go]

I have a 92 model 90 hp cylinders 1 and 3 have 125been psi and cylinders 2 and 4 have 110 psi. How long will this motor hold together?

 

[dew2]

10 lbs difference is getting poor.How long it will hold together ????????

 

[Boobie]

Omc used to recommend no more than 15 psi difference per cyl per side. A Good decarb job would probably help.