Custom Clevite Rod Bearings

BanjoPaterson · 09-09-2015, 03:44 AM

Quote:

Originally Posted by aus

To expand on what thekurgan said, there are a few engine builders here who all independently have come to the conclusion that the bearings clearances are tighter than they typically are in an engine. Add to that, the thick oil specified by BMW and this combination may contribute to the many engine failures we have seen here. There is no CONCLUSIVE proof the tight bearing clearance with thick oil is the problem, and the intermittent nature of the engine failures complicates the issue. Many people have decided to run thinner oil such as Mobil 1 0W40 (or mix in some Mobil 1 15W50) to possibly help with the tight clearances.
If you look back at the MANY threads of people showing their rod bearings that they changed out on their own as preventative maintenance, almost all have some degree of abnormal wear, but there's also a few with normal wear.

These new rod bearings will provide extra clearance to the crank and be coated. They will also be made of with a lead layer, so hopefully, an oil analysis will give owners some indication of abnormal bearing wear. The 2010 and on S65's seem to have newer bearings without lead in them.

Hope this helps as a quick recap of what's been talked about for the past 2-3 years now. If you really want more info, there's a bearing wiki thread here too.
.

will keep an eye on this thread!

kawasaki00 · 09-09-2015, 09:25 AM

Hey guys talked to RG and bearings are in production.
Have been very busy lately at normal job, a death in family and just returned from Munich. Will be more active again now that some things have calmed down a little.
Cheers

BMRLVR · 09-09-2015, 10:58 AM

Quote:

Originally Posted by kawasaki00

Hey guys talked to RG and bearings are in production.
Have been very busy lately at normal job, a death in family and just returned from Munich. Will be more active again now that some things have calmed down a little.
Cheers

Just got this message from Regular Guy (I'm sure you got the same message too Kawasaki!?):

Bearings are out of manufacture and passed inspection. Should be at coating now.

swamp2 · 09-09-2015, 11:33 AM

Quote:

Originally Posted by BMRLVR

Just got this message from Regular Guy (I'm sure you got the same message too Kawasaki!?):

Bearings are out of manufacture and passed inspection. Should be at coating now.

Any idea if the plan is to sell them before testing has been completed? I know RG talked about extensive test plans prior but I don't think this point was discussed.

javarithms · 09-09-2015, 01:02 PM

Exciting...

kawasaki00 · 09-09-2015, 05:24 PM

Quote:

Originally Posted by swamp2

Any idea if the plan is to sell them before testing has been completed? I know RG talked about extensive test plans prior but I don't think this point was discussed.

Data has already been logged with a stock car as far as temp/rpm/and flow rate using a meter that was fabricated inline of the oil filter. All this data will be posted in the near future.
As far as the bearings going officially on sale that is still up to the vendor.
Thanks everyone for the patience, this has been a long time coming.

kawasaki00 · 09-09-2015, 05:25 PM

Quote:

Originally Posted by BMRLVR

Just got this message from Regular Guy (I'm sure you got the same message too Kawasaki!?):

Bearings are out of manufacture and passed inspection. Should be at coating now.

I did, will update the first post.

8600RPM · 09-09-2015, 07:37 PM

Quote:

Originally Posted by kawasaki00

Data has already been logged with a stock car as far as temp/rpm/and flow rate using a meter that was fabricated inline of the oil filter. All this data will be posted in the near future.
As far as the bearings going officially on sale that is still up to the vendor.
Thanks everyone for the patience, this has been a long time coming.

So what are the specs? And they aren't going for sale??

swamp2 · 09-09-2015, 11:51 PM

Quote:

Originally Posted by kawasaki00

Data has already been logged with a stock car as far as temp/rpm/and flow rate using a meter that was fabricated inline of the oil filter.

Stock car with stock bearings and then stock car with redesigned bearings?

Of course the "proof of the pudding" won't come from such simple measurements but only longer term wear testing with disassembly...

BMRLVR · 09-10-2015, 01:12 AM

Quote:

Originally Posted by swamp2

Quote:

Originally Posted by kawasaki00

Data has already been logged with a stock car as far as temp/rpm/and flow rate using a meter that was fabricated inline of the oil filter.

Stock car with stock bearings and then stock car with redesigned bearings?

Of course the "proof of the pudding" won't come from such simple measurements but only longer term wear testing with disassembly...

Yes, stock engine, software, exhaust with OEM bearings, then redesigned bearings.

The engine being used is the long block that will be used to build my stroker. The engine was out of a wrecked 2009 unmodified car with 37000KM on it. The original bearings were removed and a brand new set of 702/703 BMW bearings swapped in to start the testing.

Once all of the testing is complete I'm sure a photo of the original bearings from the engine will be posted, along with the 702/703's, the redesigned clevite bearings as well as all the data from the testing. Also, I am sure the crank and rods from that engine will all be measured once it is disassembled to start my engine build.

BanjoPaterson · 09-18-2015, 02:23 AM

I'd be interested in the comparisons, particularly against the 702/3 bearings which I suspect my car has. Any update?

Also, will the manufacturer post to Australia?

Thanks

kawasaki00 · 09-22-2015, 09:01 AM

Quote:

Originally Posted by BanjoPaterson

I'd be interested in the comparisons, particularly against the 702/3 bearings which I suspect my car has. Any update?

Also, will the manufacturer post to Australia?

Thanks

Sent you a PM

theboss1853 · 09-22-2015, 09:16 AM

This is getting exciting guys.. I can't wait to see the results of the testing on these new bearings. I just had my S65 engine rebuilt (2x sort of) and have the VAC coated installed for now. My intention is to pull them out after about 10,000 miles to inspect them and hopefully by that time we have these new bearings on the market!!!

This is AWESOME work guys!

Doc Oc · 09-22-2015, 09:37 AM

Quote:

Originally Posted by theboss1853

This is getting exciting guys.. I can't wait to see the results of the testing on these new bearings. I just had my S65 engine rebuilt (2x sort of) and have the VAC coated installed for now. My intention is to pull them out after about 10,000 miles to inspect them and hopefully by that time we have these new bearings on the market!!!

This is AWESOME work guys!

The question you then face is if the VAC's come out perfect, why change to these? As someone who also has the VAC kit installed I'm very curious to see how yours look.

pbonsalb · 09-23-2015, 11:14 AM

I put in WPC treated stock bearings last year at 60k and am now approaching 70k. I will probably look at them at 120k, which will be in about 5 years. Hopefully some others who accumulate mileage much faster will have already inspected various replacement bearings after they have decent mileage on them.

jav_au · 09-24-2015, 02:55 AM

I'm interested in getting a set to Australia too. Any information appreciated. Thanks. Javed.

BMRLVR · 09-26-2015, 10:35 PM

I think these photos will speak for themselves!

R_lara · 09-26-2015, 10:48 PM

In line for this.

pvms · 09-26-2015, 11:17 PM

I'm interested in getting a set too. PM me please

jagman · 09-27-2015, 02:23 AM

I'm still very interested in getting a set (I originally posted in this thread on 12/17). Please PM me, too.

rocket_science · 09-27-2015, 10:30 AM

Looks like its all coming together. Thanks for all the hard work!

Any info on supplying vendors yet?

kawasaki00 · 09-27-2015, 12:38 PM

Quote:

Originally Posted by rocket_science

Looks like its all coming together. Thanks for all the hard work!

Any info on supplying vendors yet?

Everything is setup just waiting on them to announce on product page.

09-09-2015, 09:25 AM	#376
kawasaki00 Lieutenant Colonel 244 Rep 1,673 Posts Drives: SG-E92 ESS-650 BPM Tune Join Date: May 2012 Location: Charlotte NC iTrader: (11)	Hey guys talked to RG and bearings are in production. Have been very busy lately at normal job, a death in family and just returned from Munich. Will be more active again now that some things have calmed down a little. Cheers __________________ Electronics Junkie, Engine Builder.
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09-09-2015, 01:02 PM	#379
javarithms First Lieutenant 200 Rep 363 Posts Drives: '13 E92 M3 SG FR, '03 530i Join Date: Dec 2014 Location: Austin, TX iTrader: (0)	Exciting... __________________
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09-18-2015, 02:23 AM	#385
BanjoPaterson First Lieutenant 165 Rep 311 Posts Drives: 2015 i8 Join Date: Aug 2015 Location: Canberra iTrader: (0)	news? I'd be interested in the comparisons, particularly against the 702/3 bearings which I suspect my car has. Any update? Also, will the manufacturer post to Australia? Thanks
	Appreciate 0 Quote

09-22-2015, 09:16 AM	#387
theboss1853 New Member 10 Rep 27 Posts Drives: M3 Join Date: Jan 2013 Location: Chicago iTrader: (0)	This is getting exciting guys.. I can't wait to see the results of the testing on these new bearings. I just had my S65 engine rebuilt (2x sort of) and have the VAC coated installed for now. My intention is to pull them out after about 10,000 miles to inspect them and hopefully by that time we have these new bearings on the market!!! This is AWESOME work guys!
	Appreciate 0 Quote

09-23-2015, 11:14 AM	#389
pbonsalb Lieutenant General 7679 Rep 13,759 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I put in WPC treated stock bearings last year at 60k and am now approaching 70k. I will probably look at them at 120k, which will be in about 5 years. Hopefully some others who accumulate mileage much faster will have already inspected various replacement bearings after they have decent mileage on them.
	Appreciate 0 Quote

09-24-2015, 02:55 AM	#390
jav_au Private First Class 38 Rep 149 Posts Drives: M2 Join Date: Oct 2014 Location: Brisbane iTrader: (0)	I'm interested in getting a set to Australia too. Any information appreciated. Thanks. Javed.
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09-26-2015, 10:35 PM	#391
BMRLVR Grease Monkey 339 Rep 2,646 Posts Drives: 2011 E90 M3,1994 Euro E36 M3/4 Join Date: Apr 2006 Location: Fort McMurray, Alberta, Canada iTrader: (3)	I think these photos will speak for themselves! __________________ 2011 E90 M3 ZCP - Individual Moonstone/Individual Amarone Extended/Individual Piano Black With Inlay:LINK!!! 1994 Euro E36 M3 Sedan - Daytona Violet/Mulberry:LINK!!! Last edited by BMRLVR; 09-27-2015 at 01:07 AM..
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09-26-2015, 10:48 PM	#392
R_lara First Lieutenant 83 Rep 317 Posts Drives: E90 2009 M3 Ess VT2650, F30 33 Join Date: May 2012 Location: Santo Domingo iTrader: (0)	In line for this.
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09-26-2015, 11:17 PM	#393
pvms Enlisted Member 2 Rep 40 Posts Drives: 08 E92 M3 Join Date: Jul 2014 Location: Philly iTrader: (4)	I'm interested in getting a set too. PM me please
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09-27-2015, 02:23 AM	#394
jagman First Lieutenant 33 Rep 317 Posts Drives: 2008 Alpine White E92 M3 Join Date: Aug 2012 Location: Sacramento, CA iTrader: (1)	I'm still very interested in getting a set (I originally posted in this thread on 12/17). Please PM me, too.
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09-27-2015, 10:30 AM	#395
rocket_science 424 ASP 82 Rep 243 Posts Drives: '11 AW E92 M3 ZCP Join Date: Apr 2011 Location: Fort Myers, FL / Pittsburgh, PA iTrader: (6)	Looks like its all coming together. Thanks for all the hard work! Any info on supplying vendors yet?
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