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Old 10-05-2015, 01:38 PM   #1
anth
2nd Gear Member
 
Join Date: Oct 2011
Location: Vaughan
Posts: 123
E46 M54 Oil Pump Nut



Hey guys, just completed my first ADS weekend and had an absolute blast.
My car is a 330ci ZHP and it would regularly be over 6k rpm on the back straight at Mosport each lap.

I've read about the oil pump nut stuff but a lot of those threads are ancient and none mentioned a conclusive/reasonable solution at the time. Just wanted to check with some of you guys to see if anyone has taken measures against this, what exactly you did/costs involved, and really how much of an issue you think this is.

FWIW, my car has 123k on it, is a 6/2005 build date and has no track time on it /very limited time north of 6k rpm aside from this weekend (and even this weekend was only a few seconds per lap.

Also - the car is stock aside from a CAI mainly for sound. Any ideas for good value-oriented upgrades? So far I'm just aiming for more seat time, upgraded pads/rotors when needed, same w/ tires and if I come across a good deal on lighter wheels and a front strut brace, then that sounds like a good idea to me too.

Thanks in advance!

Last edited by anth; 10-05-2015 at 01:40 PM. Reason: more info
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Old 10-16-2015, 12:04 PM   #2
LVP
2nd Gear Member
 
Join Date: Dec 2004
Location: Hamilton
Posts: 194
My recommendation for tracked cars is to drop the pan, baffle it (helps prevent oil starvation, Bimmerworld sells), secure the nut (Bimmerworld also sells a pre-drilled but with safety wire), reinforce the subframe (I like Turner's kit better), and do the pan gasket. You want to go in once and do all the steps then. I put 350,000km on my E36 328i and never had an issue.
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Old 10-23-2015, 02:49 PM   #3
jabela
6th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 1,281
Here's your ultimate solution for the oil pump nut
http://store.bimmerworld.com/gsr-m52...aft-p2210.aspx

GSR's M52/M54 Four Bolt Oil Pump Shaft replaces the failure-prone single-nut OEM sprocket retaining system on the M52/M54 engine. The replacement shaft is precision ground, machined, and hardened for superior wear characteristics and resistance to shear failure. The four-bolt mounting system prevents the pump nut from becoming loose and backing off. This package is far superior to welded or safety-wired versions of stock parts, or a single-fastener replacement.

Kit includes new pump shaft, sprocket, and inner rotor. Fully assembled - no pressing required.
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2002 E46 325ci // 5spd // ISC N1 Coilovers
www.maisonapothecare.ca
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