Quote:
Originally Posted by techlogik
The problem with the spline setup IMHO is the spline is supposed to "tighten" and hold better if the crank and gears experience spin. If that is the case, then the timing will then be off as it tightens. There is micro slippage and movement. Thought that was their design explanation instead of a key?
Many engine builders will suggest keyed shaft setups. Better than what BMW did for whatever stupid reason. Engineers should be fired for that dumb idea.
But still, that works sort of like a shear pin. It can shear and fail. Just ups the limit it takes to do it. Better idea when running ok mods and higher power. Some insurance there. But 4k for that and hours? Ouch.
I think the inexpensive plate with reasonable boost stage 1 this is a good reasonable solution. If you are going to run Stage 2 and up and drag racing, launching with DCT, then you should reinforce with something better than the plate. But wow, again, the cost for something that shouldn't have been an issue to begin with is hard to swallow and understand.
So either be prepared for the worse case and have $$$, or just move on to another car....sad.
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Spline lock V2 is straight cut splines, pressed in. Zero reported failures or slip, it's far more aggressive than the original spline lock.
https://f80.bimmerpost.com/forums/sh....php?t=1621073
Chris