Is 064 over too much of a bore

" I have a 1980 johnson v4 out

" I have a 1980 johnson v4 outboard motor that needs 2 new pistons, they are both on the same side. Im not sure how it might of happend because i got the motor off a boat i bought used. Anyways one of the cyllinders has a pretty deep scratch in it and a friend that bores told me that .040 over would clean it up pretty good, but going .060 over would definatly do it.
(I plan on boring all 4 of the cyllinders and putting in 4 new pistons.)
Hes not doing the boring cause he doesnt have the right stuff for this motor but im just wondering if going .064 over is too much, and should i just do .040 over and hope it gets the majority of the scratch?


Thanks alot

Dave "

"Dave,

When you go beyond .

"Dave,

When you go beyond .040 in. over, in my opinion, you are pushing things to the limit. Better to have the cylinders resleeved for standard pistons.

"