25-01-2025, 08:18 PM
My experience of big industrial diesels is that the running in of new rings to honed bores is vital to avoid scuffing. The engine has to be run under load to press the ring onto the bore. Unless a newly rebuilt A7 engine is just allowed to tick over for a while, on the floor before installation perhaps, it's hard to imagine how you can drive it without putting it under load?
New rings and rehoned bores (a flap wheel will do the trick) should fix it.
Dave
New rings and rehoned bores (a flap wheel will do the trick) should fix it.
Dave