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Discussion Starter #1
What should the compression read on a NA Supra? Mine are between 170-175 and fall after cranking.
 

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Standard compression is 186, minimum is 156.
Your just taking the highest the guage reads on each cylinder... so you should be fine.
 
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Thanks. So, it doesn't matter if it falls rapidly?
 

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Nope, it will fall, because you are losing cylinder pressure as you crank. Your just looking for the highest reading, and should only need to turn it over for 2-5 seconds per cylinder.
 
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