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Subject: "Compression and Leak Down Test Results" Previous topic | Next topic
Bigtymr1021Mar-26-06 12:12 PM
Member since Sep 29th 2005
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#97447, "Compression and Leak Down Test Results"


          

I noticed last night my car was burning some oil....this was after the car was warm and had been idling for atleast 30 minute (cold outside) So I did a compression and leak test today. The leak test was at 90psi.
1)
Compression=185
Leak= 5%
2)
Compression=190
Leak= 3%
3)
Comp.=190
Leak= 6%
4)
Comp.=190
Leak= 7%

Are these numbers pretty much correct? I think they are since they are pretty close but i just wanted to make sure...thanks

  
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Replies to this topic
RE: Compression and Leak Down Test Results, Dirtbike59, Mar-26-06 02:52 PM, #1
RE: Compression and Leak Down Test Results, fly1, Mar-26-06 02:54 PM, #2
      RE: Compression and Leak Down Test Results, Bigtymr1021, Mar-26-06 03:59 PM, #3
           RE: Compression and Leak Down Test Results, sike, Mar-27-06 08:13 AM, #4
                RE: Compression and Leak Down Test Results, thedawg, Mar-27-06 11:03 AM, #5
                     RE: Compression and Leak Down Test Results, Dirtbike59, Mar-27-06 04:13 PM, #6
                          RE: Compression and Leak Down Test Results, TeamDR1665, Mar-28-06 03:29 AM, #7

Dirtbike59Mar-26-06 02:52 PM
Member since Nov 01st 2004
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#97450, "RE: Compression and Leak Down Test Results"
In response to Reply # 0

          

i would say your doing just fine.. sounds normal

  
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fly1Mar-26-06 02:54 PM
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#97451, "RE: Compression and Leak Down Test Results"
In response to Reply # 1

          

Normal for a stock(?) engine.

___________
Kon C

"Sometimes, a man has to do what a man has to do."

  
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Bigtymr1021Mar-26-06 03:59 PM
Member since Sep 29th 2005
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#97453, "RE: Compression and Leak Down Test Results"
In response to Reply # 2

          

Originally posted by fly1
Normal for a stock(?) engine.


Internally stock, but I have a Star Stage II kit

  
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sikeMar-27-06 08:13 AM
Member since Aug 06th 2003
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#97459, "RE: Compression and Leak Down Test Results"
In response to Reply # 3

          

Looks good.

  
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thedawgMar-27-06 11:03 AM
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#97461, "RE: Compression and Leak Down Test Results"
In response to Reply # 4

          

When you blow your stock pistons, it'll look like 185-190-190-120.

Minor oil burning is probably from the blowby being rerouted into the intake. Normal for turboed cars.

  
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Dirtbike59Mar-27-06 04:13 PM
Member since Nov 01st 2004
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#97466, "RE: Compression and Leak Down Test Results"
In response to Reply # 5

          

stage 2 on stock internals? hmm.. what you running the boost at?

  
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TeamDR1665Mar-28-06 03:29 AM
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#97470, "RE: Compression and Leak Down Test Results"
In response to Reply # 6

          

Originally posted by Dirtbike59
stage 2 on stock internals? hmm.. what you running the boost at?


Stage 2 just means he has an intercooler of some sort. Chances are, he's still running the usual 7-10psi. No biggie.

Numbers look good to me.

  
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