Main bearings for S65 with increased size?

Alexand3r · 08-16-2020, 07:53 AM

Anyone knows if any company is making main bearings with increased size?
My old engine suffered from main bearing fail and damaged the crank. I want to put it back in working order, but for that I will need mains that are thicker than standard.
Any help, would be appreciated!

Tut4u2 · 08-16-2020, 09:26 AM

Save yourself the headache and pick up a used motor.

Zero Signal · 08-16-2020, 11:44 AM

https://www.m3post.com/forums/showth...=Main+bearings

deansbimmer · 08-16-2020, 03:14 PM

King makes oversized bearings for ground cranks. This is not DIY stuff. You should discuss this with a machine shop experienced with the S65.

Personally, I would replace the crank and use standard size bearings. These are hardened cranks. If you grind the journals you'll need to have it hardened again.

08-16-2020, 07:53 AM	#1
Alexand3r Private 64 Rep 51 Posts Drives: E92 M3 '12 Join Date: Mar 2019 Location: Bulgaria, Pazardzhik iTrader: (0)	Main bearings for S65 with increased size? Anyone knows if any company is making main bearings with increased size? My old engine suffered from main bearing fail and damaged the crank. I want to put it back in working order, but for that I will need mains that are thicker than standard. Any help, would be appreciated!
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08-16-2020, 09:26 AM	#2
Tut4u2 Second Lieutenant 283 Rep 264 Posts Drives: 1M3 Conversion Join Date: Aug 2019 Location: Washington, DC iTrader: (2)	Save yourself the headache and pick up a used motor.
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08-16-2020, 11:44 AM	#3
Zero Signal Enlisted Member 14 Rep 38 Posts Drives: E90 M3 Join Date: Dec 2018 Location: DFW iTrader: (0)	https://www.m3post.com/forums/showth...=Main+bearings
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08-16-2020, 03:14 PM	#4
deansbimmer BimmerPost Supporting Vendor 4324 Rep 3,023 Posts Drives: 2011 E93 M3 Join Date: Nov 2014 Location: DFW, Texas iTrader: (17) Garage List 1988 E30 M3 [0.00] 2006 E46 M3 [0.00] 2024 X7 M60i [0.00] 2011 BMW M3 [0.00]	King makes oversized bearings for ground cranks. This is not DIY stuff. You should discuss this with a machine shop experienced with the S65. Personally, I would replace the crank and use standard size bearings. These are hardened cranks. If you grind the journals you'll need to have it hardened again.
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