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Old 06-17-2013, 04:05 PM   #1
GripS
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Member#: 229152
Join Date: Nov 2009
Chapter/Region: NWIC
Location: Washington
Vehicle:
2007 WRX TR
WRB

Default Water pump rubber seal important?

Just replaced my timing belt and water pump. I used a Gates timing component kit with water pump and after some research I went with a stock water pump gasket from Subaru instead of using the included paper gasket. Since I went with the stock gasket, I did not bring the one that came with the kit. When I got back home I noted the little L shaped rubber seal in the bag with the included water pump gasket. I then looked at the old water pump and see it gets installed on the edge of the pump, yet it does not appear to actually seal anything. It looks to just fill in a small gap. The car was pressure tested after we finished to ensure there were no coolant leaks.

I'm just curious if there are any people familiar with what I'm talking about and if so, would you recommend I re-do the job even with the car seemingly running normally with no leakage?
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Old 06-17-2013, 04:25 PM   #2
silverton
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Chapter/Region: NWIC
Location: Burien, WA
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Silver..thorn Metallic

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might be a timing cover dirt seal thing?
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Old 06-17-2013, 05:18 PM   #3
GripS
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I think you are probably correct. I'll crawl underneath to see if there is a small gap near the bottom of the cover where that seal probably fills in. Thanks!
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Old 06-17-2013, 08:14 PM   #4
GripS
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I checked and It's all sealed down there. I looked at the old pump and the area looks like it would be completely covered by the timing belt cover. Anybody know if its critical or not?

The seal is pictured here right next to the water pump and t-stat gasket.

http://www.rallysportdirect.com/Gate...t-w-Water-Pump
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Old 06-17-2013, 10:56 PM   #5
RedMonkey999
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Location: Olympia, WA
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2005 2.5RS
2003/4 2.5TS

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Quote:
Originally Posted by GripS View Post
I checked and It's all sealed down there. I looked at the old pump and the area looks like it would be completely covered by the timing belt cover. Anybody know if its critical or not?

The seal is pictured here right next to the water pump and t-stat gasket.

http://www.rallysportdirect.com/Gate...t-w-Water-Pump
If you're talking about the black, foam, L-shaped seal in this picture, it's a dirt seal that sits flush with the front of the short block just above the oil pan (see 7 in the following image).



Your engine isn't going to explode without it being there, but more dirt is likely to get inside the timing cover without it in place than if it were in its proper position.
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Old 06-18-2013, 12:01 AM   #6
GripS
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Yep that's exactly it. Thanks.
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Old 01-22-2021, 11:37 PM   #7
ranben
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sorry to necro this thread, I'm installing a water pump today and my kit didn't come with this seal and there wasn't one installed previously. I'm assuming it's impossible to get it in there from below once everything is back together?
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Old 01-25-2021, 02:01 PM   #8
RedMonkey999
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2003/4 2.5TS

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If it's the one I'm thinking of, you would need to take the forward timing cover back off to slide the rubber seal in between the pump and the rear cover.
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