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Old 02-21-2011, 10:24 PM   #1
Scooby Specialist
Member#: 187181
Join Date: Aug 2008
Chapter/Region: NWIC
Location: Clatskanie,Or
93 maroon impreza

Default rer main seal problem

ok so i recently just put a 22e in my 93 impreza and put my buddies act lightweight flywheel in my car that he had in his 07 impreza 2.5i to get to the point i have replace 2 rear main seals in the past 2 weeks cuz they keep leaking oil could the flywheel be doing this cuz i never had this problem unil i put the flywheel in and my clutch keeps slipping i bought a new clutch and had the flywheel resurfaced.
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Old 02-21-2011, 11:18 PM   #2
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
Chapter/Region: NWIC
Location: PDX
07 Impreza Wagon


chief your clutch is probably slipping because the main seal is leaking oil on it
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Old 02-22-2011, 12:42 AM   #3
Scooby Newbie
Member#: 250463
Join Date: Jun 2010
Location: Evanston, Il
2010 Impreza 2.5i


Did you build the engine? What's your end play on the crankshaft? Did you put the right thrust bearing in?

If the crankshaft is moving back and forth more than it should it can roll the seal out.
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Old 02-22-2011, 10:24 AM   #4
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Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
96L Most Over-
Developed Beater


I'd be more concerned with the condition of the crank and/or installation method.

If the crank has a burr on it, it'll just tear a perfectly good seal in no time. If you drive the seal in too far, it can (will) leak. A deep groove worn in the crank will also fail to seal.

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Old 02-22-2011, 02:21 PM   #5
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Member#: 41986
Join Date: Aug 2003
Chapter/Region: NWIC
Location: Hillsboro, OR
'06 STI/'85 Brat


Originally Posted by Storm View Post
If you drive the seal in too far, it can (will) leak.
I was thinking this as well. I'm not sure if you do your work yourself, but a friend of mine in West Linn does this sort of thing all the time in his shop. PM me if you want to give him a try.

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