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[Vauxhalloofer]

Hi peeps , does anybody know what the dry compression values should be on a 2.2 2001 manual ,Z22XE.Thanks.

[Webby the Bear]

i dont. but add compression ratio together e.g. 11:1 = 11 + 1
then
12 X 14.7 (atmospheric pressure).

theres your answer

[Vauxhalloofer]

got  values of 100 psi on all 4 lol with throttle closed.

[philhoward]

Need to get compression readings with throttle open - otherwise not enough air gets through to compress to give the reading.

If it's not in a manual somewhere, I'd expect 175-200psi each pot; no more than 10% difference across the board; ideally less than 5%.

[Vauxhalloofer]

Thought that didnt sound right will retest it.

[Marks DTM Calib]

Yes throttle open, the key thing is that they are all similar (as you never loose all four pots at once in the same way)

[Vauxhalloofer]

Did notice all four plugs had oil all over them and some on the top.Have done the cam cover gasket as well. Its loosing oil i get smoke a bit for say 7 secs on start up and the exhaust has oil around it. 

[omega3000]

Valve stem seals 

[Vauxhalloofer]

Think you are right, as when i did the headgasket i noticed that 4 valves had been changed.Didnt send it off to be checked as didnt have the money at the time.So swapping the cylinder head out would sort this how do i know its not the pistons or rings.

[omega3000]

Mine use to smoke on start up , cleared a bit when warm but still noticeable . On stripping down the head only one or two stem seals were seated but all worn  Replaced all the seals and no more smoke  Car never lacked power/performance of any notice while smoking so i never suspected rings .