So, ran into a problem with the Ferguson tractor engine. The pistons are four ring pistons. There are five ring pistons also. I don’t which was early or late production ones or if that is the case. Or different manufactures of pistons. Any way, from what I know the five ring piston set is the only one available. If you have the four ring piston, you just don’t use number 3 compression ring, in the five ring set. So the four ring piston has two compression rings, 1 and 2, then two oil rings, 3 and 4. So number 4 oil ring in the five ring set is suppose to go into number 3 oil ring groove on the four ring piston.
It does not fit. Groove is 5/32, ring is 3/16.
Noel
It does not fit. Groove is 5/32, ring is 3/16.
Noel