Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see pics

[davidraneypt]

Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see pics

I have scoring in 1 cylinder in a mercury 1400 (inline 6) because of damaged rings and piston. My fingernail does not necessarily "catch" on the scoring, but I can definitely feel the scoring when I run my fingernail over it. Will the motor function ok if I just replace the rings and that 1 piston? Thanks for advice.

 

[Lone Duck]

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

I have scoring in 1 cylinder in a mercury 1400 (inline 6) because of damaged rings and piston. My fingernail does not necessarily "catch" on the scoring, but I can definitely feel the scoring when I run my fingernail over it. Will the motor function ok if I just replace the rings and that 1 piston? Thanks for advice.

View attachment 160980View attachment 160981

It may run. but not well and not OK

 

[oldman570]

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

The scoreing will deffinatly need to be cleaned up . It also appears to have a crack between two of the exhaust ports that can cause trouble. It would be best to have a machine rebuild shop look at it before any parts are bought. Could be quite costly to repair, and the money could be better used for a diffrent motor or a already rebuilt powerhead. JMO
Oldman570

 

[Faztbullet]

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

Re: Acceptable scoring on cylinder wall? finger nail does not "catch" per se.....see

Acceptable scoring on cylinder wall??

No such thing as acceptable scoring for a cylinder wall, if scored it needs bored. Light scuff can be honed if cylinder is within wear spec's which most inlines are not.