Had an "84 150 horse on the V before repowering with the current motor.
At the time of swapping out the engines it had 89/90psi on all cylinders, same as it was 3 years prior to mounting it on the boat.
Like ferm said, most important thing would be near even compression between all the cylinders.
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse
Benny
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