Quote:
Originally Posted by BruceM
Wait a second here. 470 nm is about 347 ft-lbs. BMW's overboost is rated at 369 ft-lbs. Are you saying that BMW's overboost alone exceeds the safe limits of the 6MT tranny in the M2? So the factory not only doesn't engineer some head room, it markets a stock car that exceeds safe limits?
I have a very hard time believing that. No factory in its right mind would sell a car that close, let alone that much over, the ragged edge.
It's also strange that Dinan, which matches the factory warranty, does not seem to be worried about this. Their big turbo kit claims 458 ft-lbs, more than 100 ft. lbs greater than the supposed limits of this tranny, and Dinan has always been relatively conservative as BMW tuners go. That would be simply crazy if your warning is accurate.
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We are always talking about the gearbox, not the engine or the pressure. The gearbox is quiet "under dimensioned" but maybe can still keep up with the stock setup. The M2 is not that old of car to have a final conclusion, we'll see in the next few months if there are cars with (manual) gearbox problems (modded) coming up.