[dkirk]

Would one of you kind individuals with Porsche engine experience please let me know the exhaust port diameter in the 3.2L cylinder head? Please measure port diameter at the point where the exhaust header tube mates with the port in the head casting.

I'm trying to put together a digital model of the 3.2 engine using Optimum Power software, a full computer simulation of a 4-stroke, multi-cylinder engine. The program tracks all pressure waves in the inlet and exhaust system which ultimately are critical in predicting the performance of the "virtual" engine throughout the operational rpm envelope. Should be interesting to compare model results to actual dyno data.