I only had this issue once, and it was when I did not order/use rings that were purchased with my pistons.
Since, I only purchase them together, OR called the Piston manufacture and have them verbally tell me which rings to use; Never had the issue again.
This seems very familiar, but I don't remember the specifics of my situation.
EDIT:
Read through my engine build notes and found more info.
I ordered a set of rings, received rings in the correct, part-numbered boxes, but to my discovery, they were NOT the correct rings.
Coincidently, they were about ten thou. too 'thick' to fit the grooves on my Nippon pistons (Hypereutectic's).
Maybe your supplier had a similar mix-up?
Hope this helps!
Since, I only purchase them together, OR called the Piston manufacture and have them verbally tell me which rings to use; Never had the issue again.
This seems very familiar, but I don't remember the specifics of my situation.
EDIT:
Read through my engine build notes and found more info.
I ordered a set of rings, received rings in the correct, part-numbered boxes, but to my discovery, they were NOT the correct rings.
Coincidently, they were about ten thou. too 'thick' to fit the grooves on my Nippon pistons (Hypereutectic's).
Maybe your supplier had a similar mix-up?
Hope this helps!
