T.R. COMPRESSION TEST

1990 Ferrari Testarossa

Tiny

jeffcoinc

March, 22, 2011 AT 3:29 AM

What should the compression reading be per cylinder on a 90 t.R.

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Compression Test

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Tiny

Packy J

December, 29, 2011 AT 6:15 PM

Did you ever find out? I'd say a minimum of about 150-160psi but cylinder variance is more important. Its based on compression ration, a '90 shouldn't be to high though. Its not likely all the cylinders are bad, if any, so the highest is probably very accurate, they should be within about 10-15 psi of each other.

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