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Christ · 01-25-2010, 11:57 PM

The only seals in the engine are the front/rear oil seals, and the apex seals. I've rebuilt about 40 of them.

The black ring is a front rotor seal, it keeps oil from getting into the swept area. The ports in a Wankel engine are always open, there is nothing resembling a valve. Air is drawn in via induction as the rotor passes the inlet port, and is expelled via compression and expansion as the rotor tip passes the exhaust port.

01-25-2010, 11:57 PM	#18 (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	The only seals in the engine are the front/rear oil seals, and the apex seals. I've rebuilt about 40 of them. The black ring is a front rotor seal, it keeps oil from getting into the swept area. The ports in a Wankel engine are always open, there is nothing resembling a valve. Air is drawn in via induction as the rotor passes the inlet port, and is expelled via compression and expansion as the rotor tip passes the exhaust port. __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"