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Old 05-18-2013, 12:11 PM   #1
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Oil Leak Under Supercharger

Ok everyone, Have a dilemma . The other day noticed a drop of oil on garage floor. Started diagnosing the source and had to go all the way to removing the E-Force I have. Removed the Valley Plate and found it. The plastic and rubber gasket that sits between the Valley Plate and top of the engine has a crack in it. So thought easy fix. Not the case. Remember I have an L99 and an Edelbrock E-Force that uses the original gasket. So I called the dealers in my area and they say you can't buy the L99 gasket without buying the whole AFM solenoid package. $300.00 to get a $40.00 gasket. So I started calling all over and the same everywhere. I also called Edelbrock and they were not aware of this and had no help for me.

My question is does anyone make an aftermarket one or do I have any other options? Like plugging the AFM Lifter holes with something or does someone make a plug for them so I can use a LS3 gasket? Thanks for any help.
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Old 05-18-2013, 12:34 PM   #2
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a pic would help
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Old 05-18-2013, 12:36 PM   #3
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http://texas-speed.com/p-1419-gm-l99...asket-set.aspx
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Old 05-18-2013, 12:38 PM   #4
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http://www.amazon.com/ACDelco-192566...art/B004JBJY5S
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Old 05-18-2013, 12:46 PM   #5
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Quote:
Originally Posted by epstein View Post
Quote:
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OOPs Sorry, broke the golden rule didn't I. Here I'll put it up



Getting pic now.

Epstein, It's the one under the Valley Plate. Red and Black. And the part number is 80917690 but it is the LS3 one but dealers parts guys see for L99 and LS3 on their computers. But it is the LS3 one. Confirmed this at three different dealerships by driving to see them.
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Old 05-18-2013, 12:54 PM   #6
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Here is the pic. Look close at where the Oil Pressure Sensor goes. I lifted the tear a little so you can see it.

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Old 05-18-2013, 01:55 PM   #7
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Private message sent...
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Old 05-18-2013, 02:32 PM   #8
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Hopefully the gasket is the issue but just a heads up while you are in there. I had a problem with the valley plate from edelbrock being defective. It was actually porous and oil was coming right through it. I dont know if they had this issue on any other models of eforce, or just the kit I have. Same symptoms as you can see in the thread I did on the problem. Oil puddling under the eforce and leaking down eventually.

http://forums.corvetteforum.com/c6-f...saga-ends.html
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Old 05-18-2013, 04:43 PM   #9
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Originally Posted by realcanuk View Post
Hopefully the gasket is the issue but just a heads up while you are in there. I had a problem with the valley plate from edelbrock being defective. It was actually porous and oil was coming right through it. I dont know if they had this issue on any other models of eforce, or just the kit I have. Same symptoms as you can see in the thread I did on the problem. Oil puddling under the eforce and leaking down eventually.

http://forums.corvetteforum.com/c6-f...saga-ends.html

Holy Crap. That is exactly what mine is doing. I can't believe oil is coming through the plate. The gasket is probably only part of the problem. I will be calling Edelbrock again. Thanks
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Old 05-18-2013, 06:16 PM   #10
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http://www.camaro5.com/forums/showthread.php?t=206251


Thanks to Canuck
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Old 05-18-2013, 06:19 PM   #11
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and the Other known Eforce issue

http://www.camaro5.com/forums/showthread.php?t=213616
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Old 05-18-2013, 07:08 PM   #12
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While you are in there... another fun eforce issue.... easy to avoid.....

http://forums.corvetteforum.com/c6-f...ns-to-you.html
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Old 05-18-2013, 07:19 PM   #13
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I was just looking at this again and although I would change that gasket anyways, it really doesnt look like it would leak oil to the outside of the engine. If the plate is the issue you would have seen oil puddling on the plate, and there is no way that gasket would cause that.
Just for a heads up, again I dont know if it effects your blowers, but edelbrock just came out with an improved tensioner for my kit, and sent me one at no cost to upgrade. They are a good company that way. Might be worth to ask since you are calling anyways.
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ID 1000 injectors, comp rockers, Morel lifters, BT springs, Trend 3/8 pushrods, ATI 10% OD Damper
Circle D Triple Disc stall
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Old 05-18-2013, 07:51 PM   #14
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good info....gonna call monday!
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Old 05-18-2013, 09:22 PM   #15
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Quote:
Originally Posted by realcanuk View Post
I was just looking at this again and although I would change that gasket anyways, it really doesnt look like it would leak oil to the outside of the engine. If the plate is the issue you would have seen oil puddling on the plate, and there is no way that gasket would cause that.
Just for a heads up, again I dont know if it effects your blowers, but edelbrock just came out with an improved tensioner for my kit, and sent me one at no cost to upgrade. They are a good company that way. Might be worth to ask since you are calling anyways.

Will be calling them Monday as well. Thanks for your help everyone.
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Old 05-19-2013, 11:24 PM   #16
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OK, I'm raising the BS flag on GM. If you have been following this thread you now know that GM doesn't sell the Valley Plate gasket for the L99 without the whole AFM solenoid package. Well, I went ahead and bought a LS3 gasket just to see what I could do with it. And what do I discover but the LS3 gasket is really an L99 with the center part cut out. So they won't sell an L99 gasket alone but will cut out the center to sell it as a LS3 one. This is BS if ever I seen it. And here are the pics to prove it.

First one is the new LS3 gasket out of the bag. You can see the jagged edge bottom right
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This is a little closer look and you can see the rough spots where center was attached.
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Then real close.

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Come on GM. Really?
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Old 05-20-2013, 04:33 PM   #17
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Ok, The story continues. Got a hold of Edelbrock today and they are sending a new valley plate over night. Great Company for sure. He had to check serial number so they are aware of the batch that got the bad ones. Also, for the gasket, I am going to try and cut out the center of the old one and palce it in the center of the new LS3 one. Just will line it up with the cut marks GM put on it when cutting the center out. The rip is on the outside so should take care of it. Also, trying to figure out a way to plug the AFM oil riser holes. Don't need them anymore so might as well plug them. Will update as I progress. Should be soon.
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