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08-08-2017, 12:29 PM | #331 | |
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Yes the newer VAC extra clearance bearings are good, the older ones are not. There is only 1 set removed at 33.5k miles that we have proof of so far (to my knowledge) posted by MRF.
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08-08-2017, 12:33 PM | #332 | |
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http://www.m3post.com/forums/showpos...&postcount=284
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08-09-2017, 12:16 PM | #333 |
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No they are not. One was a S85, the others were S65 and they are not on this forum. You'll find the majority of M car owners are not on car forums which is why the number of failures are under reported in most cases.
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09-22-2017, 06:29 AM | #335 |
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09-22-2017, 08:21 AM | #336 |
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You don't sand the face of the bearing, ever. Some bearings have coating applied to the parting lines which can affect crush, so in some cases the coating is carefully removed from there.
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10-13-2017, 04:32 PM | #338 |
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Installation question: Typically I clean the bearings with brake clean and a lint free towel (microfiber, gentle pressure). I then make sure the rod surface is also clean and oil free (with a lint free cloth sprayed with a bit of brake clean) and then use assembly lube only on the working face of the bearing. It has worked well for me on cheaper Honda engines that I am not so worried about ($300 buys me a donor car with a running engine...). I would like to make sure that I am doing it "right" with my S65 as the engine is worth more than all of my race cars put together (we race cheap Honda slag).
Cheers, Last edited by Scharbag; 10-13-2017 at 04:33 PM.. Reason: Format |
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10-14-2017, 10:08 AM | #339 | |
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10-24-2017, 02:25 PM | #340 |
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One other installation question: If you are using OEM bolts, how the heck would you ever use plastigauge given the 11 step torque procedure? And on that note, why the heck is the torque procedure 11 steps per bolt?
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10-24-2017, 02:28 PM | #341 |
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That's why I'll never use oem bolts on an install. Way too many places to screw up
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10-24-2017, 03:15 PM | #342 |
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The stock bolt torque procedure is tedious. It probably adds an hour or maybe even an hour and a half to the job. But there is no good reason to screw it up and if you are a careless person you should not be doing the job in the first place. Stock bolts were about $200 cheaper than ARPs and there were some uncertainties about ARPs when I did mine in 2014, so I figured using stock bolts was like paying myself $100+ per hour for the extra time and removing the uncertainty. I also figured I would never do the job again so reusability was not considered.
I did the job again a year later helping someone else and we used VAC supplied ARPs and that was much less tedious and he paid for the bolts and I was helping for a little less time. As it looks now, I may keep the car a few more years and if I do, I will probably do the bearings again in a few years. I will probably use the BE bearings and ARPs that time. Also hoping someone comes out with main bearings. I would do those at the same time as further preventative maintenance. And probably the clutch as well since the trans has to come off. |
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10-24-2017, 03:19 PM | #343 |
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I did only on two rods, sampling. Since you don't have a -1 bearing available, you would not be able to do much anyways as fine tuning the bearings. Besides, even though Plastigauge is recommended by BMW and used by several engine builders as a measuring tool, it almost always gives you a wrong reading. But it helps, regardless.
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10-25-2017, 02:30 PM | #345 | |
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I will be using the ARP BE studs. Still cannot wrap my head around 3 stretch cycles. Thanks!
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10-25-2017, 02:34 PM | #346 | |
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Thanks!
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10-25-2017, 06:04 PM | #347 |
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My friends 08 e90 has over 150K miles with original bearings and drives the car real hard. Only issues he had was TPMS and oxygen sensor he is not a member here and says people brain wash you here and make you spend money
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10-26-2017, 01:41 AM | #348 | |
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Not every car is affected, but, for peace of mind, if you plan on keeping the car and can afford it, then why not. |
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10-26-2017, 07:27 AM | #349 |
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10-26-2017, 08:28 AM | #350 |
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BMW must have been more concerned about getting things perfect because it does not recommend the triple triple procedure for the S54 or S52. Maybe a V8 crank having 2 rods side by side is more sensitive? I wonder what the procedure is for the S62 or S85?
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10-26-2017, 09:22 AM | #351 |
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10-26-2017, 02:10 PM | #352 |
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My car just spiked to 20ppm lead at 97,000 miles after 6500 miles on the oil, and then to 21ppm after 4500 miles on the oil, from a baseline of 7-8 established over the life of my car. Just set up my appointment. I’m farming it out to somebody who has done it before. Fingers crossed I don’t have to buy an e93m and steal its engine afterwards
Look at me I’m a sheep baaaaa Last edited by Richbot; 10-26-2017 at 02:36 PM.. |
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