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Old 03-26-2012, 02:03 AM   #3
Rob43
Hates Low RPM !
 
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Join Date: Oct 2009
Location: Richmond VA
Posts: 4,310
My Ride: 03 331Ci 5spd R1200R
OP, the problem lies in the block.

The BMW M54B30 is an Aluminum Alloy block, it simply gets a harmonic resonance in it at higher RPM. Kinda like a tuning fork. Apparently the oil pump is the weakest link in the chain. The three things that can be done to alleviate this problem are 1) ATI Super Damper $800 2) TC Kline / vaio76109 Super Oil Pump $750 3) S54 Timing Chain Tensioner $160.

I've personally had a high RPM motor failure because of this, I believe the three items listed above are necessary for sustained high RPM usage.



Good luck,
Rob.
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