Quote:
Originally Posted by adc
I recall the M235i and M240i racing were quite successful, Z8F transmission and all. Your point is lost?
|
I've been saying for ages.. BMW tried this tranny just so they can say" oh, we race the automatic too!"
It is a different gearbox from what is sold for M235i and M240i. Also remember they are replacing these with M2 CS Racing which uses M-DCT. I certainly wouldn't say it was the perfect "motorsport" transmission else they would have stuck with it.
If you also read the article by Sachs, it's hardly an automatic since the dispensing torque converter is what made the low weight possible; not what we customers get from the dealership anyways.
Compression rate of N55/B58 engine is 11.0:1 with minimal boost so the engine itself is also very responsive which may account for fast shifts for an automatic.
https://www.sachsperformance.com/en/...-8hp45-from-zf