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Best advice I can give is got get a copy of Bruce Andersons book
"Porsche 911 Performance Handbook"
Read that sucker cover to cover.....twice. A good read if you're a Porsche gearhead.
The cyls/rings may be dry as a bone and skewing your results.
Pull the plugs and spin it over on the starter for at least a minute.
Some folks say...till pressure shows on the gauge, but I've never has any luck with that. Put the plugs in and crank it over some more 15/20 sec.....then light that sucker off. If pressure don't come up on the gauge within 10/15 seconds....shut it off, then worry.
If it lights and the pressure is there, check for oil leaks. Spin it up to 2000 rpm or so and run it for a while.....15 /20 mins. It's gonna smoke.....if it makes rude noises.......shut it down and worry some more.
If you get past that, do your compression test.
Remember, WOT for that test.
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JPIII
Early Boxster
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