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Got a 32 with a rb25det series 2 with unknown k's on the motor i so decided to check the compression I first tried the screw in type connection which was hard to do up tight and gave me 90 :/ So i tried the push in type and got 120-122-121-120-123-120 Then engine was hot These seems to be low results but how low is to low? The car runs fine and pulls hard

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Should really search:

http://www.skylinesaustralia.com/forums/topic/407717-compression-test-results/

Pretty sure providing the cylinders are with in a % of each other no matter how low to an extent it's fine. From memory its something like 5% but i could be wrong.

Got a 32 with a rb25det series 2 with unknown k's on the motor i so decided to check the compression I first tried the screw in type connection which was hard to do up tight and gave me 90 :/ So i tried the push in type and got 120-122-121-120-123-120 Then engine was hot These seems to be low results but how low is to low? The car runs fine and pulls hard

Don't forget if you've got a set of cams in there it could give you a low result too, id check the timing isn't out too.

The engine was hot did it straight after a 45 min drive I did read somewhere you take out all the spark plugs when doing the test hmm.. A friend mentioned to use a battery pack to help with cranking incase the battery is not %100 Ill check out the cams I also have a consult cable so I'd say I can check out the timing with this?

  • 2 weeks later...

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