Ralph, do you have a 'before' pic of it in the field? rc.
Its the original 255. I remember when my brother was working on it back about 1980 replacing pistons and rings. By some mistake there was one wrong piston in the box and it must have been for a 239. On first start up the engine had a knock. He was really disappointed and after diagnosing he discovered one piston was too high. If memory serves me correct he filed it down until it would not interfere anymore. Probably not the recommended fix but it seems to run just fine after all these years.Ralph do you know if the Merc has a 239 or a 255 V8.
Ralph, Thanks for sharing that video of "saving the Merc". It's great that you have brought it back to life.