Quote:
Originally Posted by Levi
Remember the McLaren MP4-12C has a 3.8l V8 Biturbo and has redline at 8.500 rpm. Why can't BMW do that?
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Three main reasons:
A - Cost. You can bet the turbos being used on the McLaren are nothing short of "state of the art", and they probably cost 3 or 4 times as much as the turbos BMW will be using on the M1.
B - Low end throttle response. To support high RPM power you need higher flow rates. It's hard (and again, expensive) to make a turbo engine extremely responsive at low RPM, and still make power at high RPM.
C - Fuel economy. BMW has to be mindful of fuel economy, but McLaren really doesn't. The turbos on the M1 will need to be efficient enough during daily driving that the car doesn't get killed on the standardized mileage tests in the various markets.