Cleaned the pistons today
And of course some questions.
I can now read the markings on the piston. They are different make but both are +.030". I measured them with a small caliper the best I could and I have a .002" difference
Now one of the pistons is corroded on the top and top side. On the bottom of the top ring groove, it has some scratches, I made a picture of the larger one.
I also cleaned the ring grooves. Are they clean enough?
Cylinders are also about .002" different.
I will match the larger piston with the larger cylinder.
I cut the rings. I did my best but they are not equals. I have gaps of 12-13-13-15-16-16-17 and 23! (of course 2 are scrappers) Measured in the smaller cylinder. Gaps are +/-.002 larger on the other cylinder.
Question is does it makes any sense to use the smaller gap on the top, is .012 not too small? I can make it .014-.015 on the other cylinder.
Or is it just fine and I can use whatever gap on whatever ring?
Old ones were .020-.030
I marked the pistons for front and rear and top to put them back on same cylinder and same orientation. Of course the markings are now long gone. Since the cylinders have been honed, is that ok to use any piston in any orientation, even though the smaller will go in the smaller cylinder but I am not sure it was the case before...
So
1. Are the ring grooves clean enough?
2. piston condition remain still usable? I hope so as I don't plan to change them and in any case the engine was running fine with them in.
3. Any order/matching in ring gap dimension or we just don't care?
4. I cleaned and removed any gasket compound (used on top of paper) surplus and removed everything I can see. Is it quite critical given the oiling system to have a real clean engine interior or is it tolerant. I mean do I need to make 200% sure nothing is left behind that may plug the oiling system. Not sure of the pression and size of ports in this system.
5. any comment?





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