15-09-2017, 07:59 AM
If the engine is old / done alot of mines there will be lips on top of bore, and also rings will be weak. Hone and replace.
If the engine has been looked after/not huge lip (will alwats get some form of a lip, check its not mostly carbon), If engine is good condition I would reuse rings. As said take care when pushing rods/piston assembly out and always use ring compressor tight, and just light taps pushing pistons back in. The pistons should never be forced back in this breaks rings.
I have never replaced rings while rebuilding XUD's never seemed worth it when they are worthless anyway.
If the engine has been looked after/not huge lip (will alwats get some form of a lip, check its not mostly carbon), If engine is good condition I would reuse rings. As said take care when pushing rods/piston assembly out and always use ring compressor tight, and just light taps pushing pistons back in. The pistons should never be forced back in this breaks rings.
I have never replaced rings while rebuilding XUD's never seemed worth it when they are worthless anyway.
![[Image: 22f2b6b2-758b-4c1c-96fb-6fa9c6059b13_zpsf306b56b.jpg]](http://i585.photobucket.com/albums/ss299/Ha11elujaz0rs/22f2b6b2-758b-4c1c-96fb-6fa9c6059b13_zpsf306b56b.jpg)