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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 Tue, Jan-31-2017, 12:55:45 AM   #31
m3 hal
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Default Re: King Racing Bearings

Quote:
Originally Posted by Braymond141 View Post
Lang suggested King for the mains, I'll see if a rod bearing suggestion came up. He does have sort of a negative opinion on his site about WPC citing the tighter clearance after treatment.
source?

"We like to use BMW factory bearings with WPC treatment. WPC treatment has shown to increase rod bearing load bearing capacity and extend service life on all bearings so we choose to use it whenever possible."
http://www.langracing.com/bmw-e60-e6...ction-service/

Some test data by HKS/WPC from Lang's site: http://www.langracing.com/images/Bearing_Load.pdf
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Old Tue, Jan-31-2017, 03:26:15 PM   #32
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Default Re: King Racing Bearings

There's no problem with S54 rod bearing clearance. It's about .0020". The King bearings are closer to .0030". I have an open box set I'll sell for 50$, they are too loose for me to use on anything.
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Old Tue, Jan-31-2017, 03:45:11 PM   #33
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Default Re: King Racing Bearings

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Originally Posted by AndrewLang View Post
There's no problem with S54 rod bearing clearance. It's about .0020". The King bearings are closer to .0030". I have an open box set I'll sell for 50$, they are too loose for me to use on anything.
Thanks for the info on clearance do u know if ACL ones are ok?
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Old Tue, Jan-31-2017, 03:47:17 PM   #34
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Default Re: King Racing Bearings

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Originally Posted by Flow View Post
Aren't the mains color coded and you need to order the same color bearing as the marking on the crank ? Or how does this work ?
It seems to me like main bearing clearance varies more by the block than the crank. Any of the bearing kits you buy will have the same bearing size throughout. If you want to be that accurate you'll need to buy all the different colors.
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Old Tue, Jan-31-2017, 03:57:36 PM   #35
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Default Re: King Racing Bearings

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Originally Posted by HassanEido View Post
Thanks for the info on clearance do u know if ACL ones are ok?
I haven't bought a set of those before.
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Old Tue, Jan-31-2017, 04:38:51 PM   #36
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Default Re: King Racing Bearings

Since we're on the topic of WPC and if it works, how does it compare to microblue treatment? Is there any reason to believe one process is better than the other for the purpose of rod bearings?
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Old Tue, Jan-31-2017, 04:56:19 PM   #37
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Default Re: King Racing Bearings

Quote:
Originally Posted by AndrewLang View Post
There's no problem with S54 rod bearing clearance. It's about .0020". The King bearings are closer to .0030". I have an open box set I'll sell for 50$, they are too loose for me to use on anything.
Are all king bearings too loose? Or just that particular set?
Also how much are you guys selling King Racing rod bearings?
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Old Tue, Jan-31-2017, 06:06:40 PM   #38
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Default Re: King Racing Bearings

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Originally Posted by AndrewLang View Post
It seems to me like main bearing clearance varies more by the block than the crank. Any of the bearing kits you buy will have the same bearing size throughout. If you want to be that accurate you'll need to buy all the different colors.
Exactly. I would stick with OE for the mains, are they are color coded and have different thicknesses, and not go with one-size-fits-all other brands. Thank you for your input.
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Old Tue, Jan-31-2017, 07:26:19 PM   #39
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Default Re: King Racing Bearings

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Originally Posted by Flow View Post
Exactly. I would stick with OE for the mains, are they are color coded and have different thicknesses, and not go with one-size-fits-all other brands. Thank you for your input.
Not exactly what I meant. I use the King/ACL bearings quite frequently and I also sell them and advise that people use them, the cost savings is pretty significant.
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Old Wed, Feb-01-2017, 08:09:10 PM   #40
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Default Re: King Racing Bearings

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Originally Posted by m3 hal View Post
More bearing surface area is exposed due to the small dimples, resulting in an increased volume of oil on the bearing.
i can see more surface area but the added volume would be immeasurably small, the question is why would more surface area to volume do anything for a bearing film

there is no denying the process works on reduced friction with metal to metal contact with boundary or mixed lubrication so if you suffer loss of lubrication (including first start on cold engine among other scenarios such as detonation or starvation) then you will get less incremental damage giving longer life but i wonder if there is some evidence that there is a friction reduction with normal hydrodynamic lubrication when things are operating as normal to.
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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)