Do these cylinders need rebore Pics

[TrickyRicky]

[[/ATTACH]Think these cylinders need rebore? I think it was run with carb cleaner and the skirts started to gald. Top of bore looks good. Recently bought powerhead did not rn it myself. 2 cyl 55hp 1978. Had 150 compression.

 

[HighTrim]

Re: Do these cylinders need rebore Pics

Have you mic'd it?

 

[boobie]

Re: Do these cylinders need rebore Pics

From the pics it looks like rebore time.

 

[Lone Duck]

Re: Do these cylinders need rebore Pics

View attachment 179198View attachment 179199View attachment 179195[[/ATTACH]View attachment 179199Think these cylinders need rebore? I think it was run with carb cleaner and the skirts started to gald. Top of bore looks good. Recently bought powerhead did not rn it myself. 2 cyl 55hp 1978. Had 150 compression.

As a general rule, If you can feel the scratch with your finger nail, it is time to recross thatch or rebore depending on depth fingernail goes in scratch.

 

[TrickyRicky]

Re: Do these cylinders need rebore Pics

Pics are from bottom looking up

 

[emdsapmgr]

Re: Do these cylinders need rebore Pics

If you were to hone it and put in new rings, it will probably run. Over time, the carbon from cylinder combustion will start to seep down those grooves and promote carbon around the ringsets and piston skirts, shortening engine life. Time for a rebore.

 

[retiredfornow]

Re: Do these cylinders need rebore Pics

Yup, if you're down that far, rebore it and worry no more.