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Old May 3, 2005 | 09:47 AM
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From: barrie ontario
Default oil pump o-ring

I am swapping my oil pump to an LS-6 ported one I got from Chris @ ECS....
Is there a different O-ring than the stock one that should be used?
I have already studied my manuals and LS-1howto on this subject any additional info not mentioned would be very helpful..
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Old May 3, 2005 | 10:33 AM
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Nope, we just use the stock ones. Just be sure to inspect it carefully for no rips or any tears. If you need a new one, let me know.
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Old May 3, 2005 | 11:54 AM
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I would opt for the new one and one spare for the installation. And an LS2 timing chain while you are in there. Well worth the $40 additional.
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Old May 3, 2005 | 12:05 PM
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Do reworked pumps come with a new o-ring?
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Old May 3, 2005 | 04:25 PM
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From: barrie ontario
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the timing chain seems like a good idea..

I was watching H.P. T.V.... they did an LS-1 and said that you have to center the pump or you will chew up your gerotor????
I realize its a T.V. show but I need all the info I can get..
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Old May 3, 2005 | 07:22 PM
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One of the books I have states the same thing, they use a feeler gage prior to tightening the pump in place.
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Old May 3, 2005 | 07:27 PM
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I agree with vettenuts. I opted to coat the o-ring with a little lube so it would slide in easily. New oring & ls2 chain is the way to go. i could not believe how much slack was in my chain. Scott
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Old May 4, 2005 | 09:12 AM
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From: barrie ontario
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now if I could just find an ASP pulley .... I could get started
I have checked:
Lingenfelter
ECS
ASP
RPM outlet
Hop up racing.....
Summit
Thunder racing


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Old May 4, 2005 | 11:29 AM
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Yes there is a different O ring you can use. It is a little bit thicker that the oringinal and fits better in my opinion, I got mine at the dealer of all places and they commented that they used this one in the three of four cars they reringed for oil buring issue because the original one was torn.
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Old May 4, 2005 | 12:41 PM
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I'm glad I read this post because the new oil pump being shipped didn't include an o-ring so a local dealer is supposed to have one today. You would think that the pump would include a new o-ring so the customer wouldn't have to hunt for one; a $3 item.
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Old May 4, 2005 | 02:06 PM
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Originally Posted by molson
now if I could just find an ASP pulley .... I could get started
I have checked:
Lingenfelter
ECS
ASP
RPM outlet
Hop up racing.....
Summit
Thunder racing


I went through the same thing - Finally got mine from MTI
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