S2000 Under The Hood S2000 Technical and Mechanical discussions.

How are my compression numbers?

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Old 04-07-2019, 01:51 AM
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Default How are my compression numbers?

NOTE: Car was warm and in operating temperature. However, I forgot to go WOT during this test



So, because I didn't do WOT, do I need to repeat the test?If I don't need to repeat the test, how are my numbers? Are they consistent enough? Thank you!
Old 04-07-2019, 06:45 PM
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Those compression numbers are solid. Testing with WOT would just raise them a bit, but I wouldn't be concerned about retesting with numbers in the 200s and fairly close
Old 04-07-2019, 07:39 PM
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Originally Posted by datadr
Those compression numbers are solid. Testing with WOT would just raise them a bit, but I wouldn't be concerned about retesting with numbers in the 200s and fairly close
Fantastic! Thank you for checking.

I want to start tracking my car a bit, or at least learn how to behave on the track. And I wanted to make sure my car won't grenade on it.

Thank you!
Old 04-08-2019, 06:29 AM
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Compression mostly tells you how much power potential the motor still has. It doesn't reveal much about if the motor is going to grenade on you.

For that you want to do an oil analysis.
Old 04-08-2019, 07:45 AM
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Originally Posted by Car Analogy
Compression mostly tells you how much power potential the motor still has. It doesn't reveal much about if the motor is going to grenade on you.

For that you want to do an oil analysis.
Understood, thank you for the suggestion!
Old 04-08-2019, 10:05 PM
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Originally Posted by Say Chi Sin Lo
Originally Posted by Car Analogy
Compression mostly tells you how much power potential the motor still has. It doesn't reveal much about if the motor is going to grenade on you.
For that you want to do an oil analysis.
Understood, thank you for the suggestion!
In case you are running an AP1, also check your valve retainers before taking it to the track - there's no indication for cracked retainers on an oil analysis nor a compression test.
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