Quote:
Originally Posted by Nick M3
I don't think that the damper is, although aftermarket oil pump setups are legal, and I *think* the tensioner is as well. IIRC, in race form, high RPM durability of the M54 remains iffy even with all of that. There's a huge difference between occasionally touching the rev limiter and running it out in 4th gear.
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That was the common thinking three or four years ago. The oil pump tensioner seems to solve the majority of the issues though, which generally are chain-slap related.