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Christ · 02-09-2010, 12:02 PM

It's likely just there "because it is". I can't see any reason that it would be better than a standard lap joint. Any pressure applied would be opposed by the other side of the ring gap, so while pushing one side out and down, it would be forcing the other side of the gap in the opposite direction, in and up, creating a bigger leak between the cylinder wall and compression ring.

I'm not saying that actually happens, but it does wreck the theory that the rings are pushing out because of the angle.

02-09-2010, 12:02 PM	#14 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	It's likely just there "because it is". I can't see any reason that it would be better than a standard lap joint. Any pressure applied would be opposed by the other side of the ring gap, so while pushing one side out and down, it would be forcing the other side of the gap in the opposite direction, in and up, creating a bigger leak between the cylinder wall and compression ring. I'm not saying that actually happens, but it does wreck the theory that the rings are pushing out because of the angle. __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"