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2002 996 leak down test cold????

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Old Jun 18, 2012 | 11:06 PM
  #1  
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72_Wagon
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Question 2002 996 leak down test cold????

Long story short i have a 2002 996 with a blown engine and have a another that is on a engine stand and need to test it to see if has a problem. I know that it is recommended that you preform this test warm but that is not a option. I will also be doing a compression test..

As i have no history on the engine and it has a heavy intermix.... like so heavy that i dont think it can be a cracked head...also the crank case didn't intermix.. I tested the oil cooler and it didn't leak when tested with pressure on the coolant side.(tested at 60 psi) but i tested the oil side with 90 psi it leaked to the coolant side.. also when i removed the cooler from the engine the rear coolant port the large one closest the flywheel was full of non mixed oil and underneath it was intermixed oil..

So before i change the oil cooler and install engine i would like to verify that the engine doesn't have a bigger problem.. or before i tear into it and rebuild a top-end for no reason..

So the question is will a cracked head show up on a cold compression test and leak down test? As compared to the other cylinders?

Thanx for any input if you have preformed these tests before

Marv,
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Old Jun 18, 2012 | 11:22 PM
  #2  
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Byprodriver
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From: So.CA
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Heads must be pressure tested at operating temp to reveal all cracks
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Old Jun 18, 2012 | 11:56 PM
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The engine right now is on a engine stand and i stripped it down to a long block... So a proper leak down test and compression test isnt going to happen..

Thanx for the reply....
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Old Jun 19, 2012 | 12:18 AM
  #4  
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gieseja
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From: cleveland
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These guys just fixed my cracked head. Some cracks have to be heated to find.

Hoffman Automotive Machine Inc.
1880 Commerce Rd. Suite 211
Athens, GA 30607
706 613 7454
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