Quote:
Originally Posted by Tobra
This is the first time anyone has told me it is not a horizontally opposed, flat 12
Testarossa motor was a 180* V-12
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A horizontally opposed engine, like a 911 six, has a separate crankpin for each cylinder. This is not really possible with a 12 cylinder engine, as the crankshaft would not be rigid enough. That’s why Porsche paired two cylinders on each crank pin, like the average V engine. Even so, they were so concerned about torsional vibrations in the crankshaft that they took the power takeoff from the middle of the crankshaft, where there’s a “quiet” vibration node, as opposed to the end of the crankshaft.
And yes, all Ferrari flat 12 engines were 180° V 12s.