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Piston ring gap on a 1977 140hp johnson

D

danny

New member
" can anybody tell what to gap

" can anybody tell what to gap the piston rings at, the cylinders are not bored i just replaced the pistons and rings i have been told several different gaps,they are not omc pistons there are a after market set "
 
"If you're speaking of the

"If you're speaking of the gap that would exist between the ends of the piston rings when they're inserted into a cylinder by themselves, that would be:

.017 Maximum - - .007 Minimum

Joe (30+ Years With OMC)"
 
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