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I called Total Seal and told them the situation. They said the rings I have were spec'd by Manley to have a 24 lb oil ring tension. And in order to get that tension with a 3mm ring set, the expander must be oversized. Because of this you have to "crush" the expander ring by running it through the compressor before hand with only the oil rings installed on the piston. I already ordered the Mahles in standard tension and am gonna stick with those, but the guy at Total Seal seemed to know his s**t and was bummed that Manley didn't have in their instructions an explanation on the need for crushing.

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Could be true,,,I was not told anything like that. I was only told that "we do not make the expanders in house,yada yada yada...". In other words, "we didn't make the expander and any problems you are having are not our fault". I did notice one thing in their instructions,,,"DO NOT alter the length of the expander, it will void warranty"..or something similar to that. I believe most of the parts suppliers are like the people building these Gen 3 engines, they haven't got ALL the particulars NAILED yet, so some problems will occur.