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compression (PSI)

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Old November-5th-2002, 08:47 PM
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compression (PSI)
I my car just back from the dealer and my compression was good 160psi x4. I was just wondering what exactly is the nominal compression for the SOHC? How much better could my compression be if any. BTW my car only has ~65k miles and its a 91
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Old November-6th-2002, 12:38 AM
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Spec is 173 psi, mimimum of 121 psi, with a max variation between cylinders of 26 psi. Sounds like you are fine.
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Old November-6th-2002, 01:51 PM
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where did you find that info? I couldn't find it in my haynes even!
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Old November-6th-2002, 02:28 PM
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It's in my Haynes manual. Just keep looking. I'd give the page number but I don't have it in front of me right now.

Nathan
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Old November-6th-2002, 06:47 PM
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Originally posted by Darkcide
where did you find that info? I couldn't find it in my haynes even!
Mazda FSM.
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Old November-7th-2002, 01:39 AM
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Compression...
It's section 2B-1 in the Haynes Manual.

Nathan
'91 323 (soon to be 1.8L DOHC 323)
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