E46Fanatics - View Single Post - M54 Oil Pump solution
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Old 06-22-2011, 12:06 AM   #66
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Join Date: Feb 2008
Location: Philadelphia
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Originally Posted by aggieE46 View Post
I believe it's M54, although I THINK the S52 had similar harmonic issues (due to the crank).

The S54 uses a totally different oil pump.
I did some research, and the S52 also seems to suffer from the oil pump nut issue... makes sense since the M54B30 and S52 have the same crank, and S52s actually see higher revs. While doing said research, I also found that the S52 guys often retrofit Euro S50 or S54 oil pans and pumps (while retaining the S52 sprocket so the chain still fits). Is there any reason that cannot be done on an M54?

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