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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Jan-31-2018, 08:02:21 PM   #81
Obioban
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Default Re: King Racing Bearings

Both sets were untreated factory bearings. I do have WPC treated bearings in the M3 wagon, though I’m not yet entirely convinced that it’s better...
We’ll see :P

I believe the M3 wagon is on its second set of bearings as well, has a couple track events on it, and has 190,000 total miles
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Old Fri, Feb-02-2018, 02:39:02 PM   #82
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Default Re: King Racing Bearings

any reason why this forum doesn't talk about the BE Bearings that are the most popular and best clearance talked about all over on the M5Board.
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Old Fri, Feb-02-2018, 03:13:09 PM   #83
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Default Re: King Racing Bearings

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Originally Posted by M3Ollie View Post
any reason why this forum doesn't talk about the BE Bearings that are the most popular and best clearance talked about all over on the M5Board.
The s54 doesn’t have the same clearance issues as the s65/s85 (assuming that’s their issue— either way the s54 is built to the conventional standards that the BE bearings take the s65/s85 to).
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Old Wed, Mar-14-2018, 06:46:18 AM   #84
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Default Re: King Racing Bearings

Hello
I am going to replace the bearings in my m3, I do not know what to choose KING RACING or OEM or maybe something else. Can I put on KING RACING and be calm?

I apologize for my language but I am from Poland
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Old Wed, Mar-14-2018, 06:57:04 AM   #85
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Default Re: King Racing Bearings

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Originally Posted by Bartoszm3 View Post
Hello
I am going to replace the bearings in my m3, I do not know what to choose KING RACING or OEM or maybe something else. Can I put on KING RACING and be calm?

I apologize for my language but I am from Poland
If you really have to ask, I would stick to OEM. There are thousands of S54's with OEM bearings (including mine). And quite frankly, I would rather keep it that way.
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Old Wed, Mar-14-2018, 11:53:37 AM   #86
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Default Re: King Racing Bearings

Going to higher bearing clearances reduces oil pressure.
All these quick "fix" solutions do not take the entire system into account.
Increasing flow, by reducing clearance, does not automatically mean more protection. Apart from film strength, oil pressure keeps these surfaces apart.
Take a lubricity tester, oil is tested at 0 pressure to remove that from the equation, if your goal is to test film strength for example.
It is also why you need to increase oil pressure by rpm.
I would not run a higher tolerance before increasing oil pressure as a whole,having said that, I would not run higher tolerances at all.
If tolerance was the issue, then it would be a self rectifying problem. Over time, tolerances will increase and you get more tolerance in there, so a self rectifying feedback loop.
But its not.
I would wager a significant portion of bearing issues are due to inadequate oil pressure.
@Ian I dont think the wpc treated are worth their markup. I've seen 10k old wpc bearings with the treated surface gone.

@ OP, OE ftw, just make sure the oil pump is ok.
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Why not to use after market bearings with surfacetreatments and /or increased clearance
http://www.m3forum.net/m3forum/showp...4&postcount=10
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Discussing King Racing Bearings in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)