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My cylinder compression numbers. Are they good? 

 

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 Post subject: My cylinder compression numbers. Are they good?
Posted: Sat Jun 02, 2007 8:37 pm 
Getting Side Ways
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Ok these are my ratings in PSI for all 6 cylinders.

1. 200psi
2.203psi
3.203psi
4.198psi
5.200psi
6.201psi

Are these good figures?
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Posted: Sat Jun 02, 2007 8:43 pm 
Getting Side Ways
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sounds alright 4 sounds abit wrong try doing 4 again

 

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Posted: Sat Jun 02, 2007 8:47 pm 
Getting Side Ways
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They are all fine. All are above 144PSI and are all within 10%. That engine is well within specs. The numbers are actually very good, so your engine is either quite 'fresh' or you have a 'generous' compression gauge.

cheers
Scott

 

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Posted: Sat Jun 02, 2007 8:51 pm 
Getting Side Ways
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It's been serviced almost every 5000k's.

good to see it's far above 144psi.
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Posted: Sat Jun 02, 2007 9:48 pm 
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i wouldn't expect to see a stocker read that high.

 

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Posted: Sun Jun 03, 2007 10:36 am 
Getting Side Ways
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Very good numbers, I got similar with an old guage, bought a new one and got 180 psi across all cylinders. Possibly a dodgy or as MacGyver said a generous guage.

 

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Posted: Sun Jun 03, 2007 10:40 am 
Getting Side Ways
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Yeah, as I said they seem pretty high. Have you had the head off to fix a head gasket leak and they shaved the head? This may add a few PSI.

185PSI is a more realistic number.

cheers
Scott

 

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