Average compression test reading on a Porsche 911 2.7l?

The average compression test reading for a Porsche 911 2.7L engine typically falls between 145 to 165 psi across all cylinders. Readings that are consistent and within this range generally indicate a healthy engine. Significant deviations or low readings in any cylinder may suggest issues such as worn piston rings or valve problems. Regular compression testing can help in diagnosing engine health and performance.