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| Forum name | Performance/Engine |
| Topic subject | Compression and Leak Down Test Results |
| Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=97447 |
97447, Compression and Leak Down Test Results
Posted by Bigtymr1021, Mar-26-06 12:12 PM
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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97450, RE: Compression and Leak Down Test Results
Posted by Dirtbike59, Mar-26-06 02:52 PM
i would say your doing just fine.. sounds normal
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97451, RE: Compression and Leak Down Test Results
Posted by fly1, Mar-26-06 02:54 PM
Normal for a stock(?) engine.
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97453, RE: Compression and Leak Down Test Results
Posted by Bigtymr1021, Mar-26-06 03:59 PM
Originally posted by fly1
Normal for a stock(?) engine.
Internally stock, but I have a Star Stage II kit
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97459, RE: Compression and Leak Down Test Results
Posted by sike, Mar-27-06 08:13 AM
Looks good.
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97461, RE: Compression and Leak Down Test Results
Posted by thedawg, Mar-27-06 11:03 AM
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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97466, RE: Compression and Leak Down Test Results
Posted by Dirtbike59, Mar-27-06 04:13 PM
stage 2 on stock internals? hmm.. what you running the boost at?
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97470, RE: Compression and Leak Down Test Results
Posted by DR1665, Mar-28-06 03:29 AM
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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