Thread: BMW B58
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Old 11-21-2019, 04:48 PM   #35
venturaII
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Quote:
Originally Posted by Irace86.2.0 View Post
Well, the reason the Supra came with a ZF8 verses a DCT is weight they said, so maybe the ZF8 is light for what it offers, and it is good to remember that our Asain manual transmission is glass compared to the manual in a M240i. The torque is about 2.5 times the levels of the twins, so the transmission would be much beefier, as well as, the clutch assembly. Add the weight of a clutch slave cylinder and extra foot pedal assembly, and I could imagine the manual being heavier than the ZF8.

I have no doubt that either manual for the B58 is heavier than our Aisin. Likewise, I'd expect a DCT and clutch setup is also going to be much heavier than a traditional manual with foot clutch (assuming they're for the same motor) simply due to the additional componentry required, so I guess I could buy the ZF being lighter than the DCT. I still have a very hard time believing a conventional manual transmission for the B58 in an F20/22/30 weighs 225+ lbs (192 for 8HP, plus 35 difference). A T56 barely weighs half that and certainly has more capacity than either GS6xxx manuals (Getrag or ZF) in the BMW...
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Last edited by venturaII; 11-21-2019 at 05:05 PM.
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