Crankshaft rear seal didn't fix the oil leak - ZR-1 Net Registry Forums

QB93Z · 08-10-2009

My problem started with an oil drip from the forward edge of the bell housing on my 1993 ZR-1 (102K miles). I guessed that it was oil leaking from the crankshaft rear seal.

Yesterday I (we) replaced the crankshaft rear seal, seal housing gasket and clutch. Thanks to all who helped.

I drove about fifty miles in the evening and parked it in the garage. This morning I have oil that dripped from the bell housing again.

My conclusion now is that the oil is coming from the transmission input shaft seal.

Anyone have any other ideas where the oil could come from?

Is replacing the transmission input shaft seal easy or will I have to rebuild the whole transmission to do it?

Thanks, Jim

08-10-2009	#1
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Crankshaft rear seal didn't fix the oil leak My problem started with an oil drip from the forward edge of the bell housing on my 1993 ZR-1 (102K miles). I guessed that it was oil leaking from the crankshaft rear seal. Yesterday I (we) replaced the crankshaft rear seal, seal housing gasket and clutch. Thanks to all who helped. I drove about fifty miles in the evening and parked it in the garage. This morning I have oil that dripped from the bell housing again. My conclusion now is that the oil is coming from the transmission input shaft seal. Anyone have any other ideas where the oil could come from? Is replacing the transmission input shaft seal easy or will I have to rebuild the whole transmission to do it? Thanks, Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member