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-   -   New m3 and rod bearings (http://www.m3forum.net/m3forum/showthread.php?t=553456)

Cheetah611 Wed, Aug-31-2016 10:24:10 PM

New m3 and rod bearings
 
First off, I know this has been discussed to death and I've done a ton of research myself but haven't found an exact answer to my question.
I recently purchased a 2008 E90 m3 6MT with 63k miles. I was able to get an extended warranty but it only cover up to $3,000 of repairs (they said the M falls into an 11 yr old or 140,000+ miles car category).
My question is, if I hear tapping (not hard knocking) is it too late for the bearings to be replaced? Or would I need a new engine/rebuild at that point? And would I be able to hear tapping from inside the cabin? Finally, exactly how worried should I be? I stretched my budget from a 335i after driving the M and have some spare cash for repairs but a new engine is definitely not in that budget..

Once again sorry for beating a dead horse and thanks for the help in advance.

pbonsalb Wed, Aug-31-2016 10:49:08 PM

Re: New m3 and rod bearings
 
There is definitely a risk. You have to decide whether to hedge against it. I did the rod bearings on my 08 at 60k. They looked better than many but had some copper showing at the parting lines and down the sides, but none yet in the middle, on the upper shells. I think they would have been fine for another 20k, maybe more. I spent $500-600 in parts and DIYed. On the other hand, most of these cars seem to be doing fine. I did not want to worry and an $8k used engine would be unpleasant. I am at almost 80k now and dont worry. I might do them again at 100k if I have the time and energy, out of curiosity.

williemandowa Thu, Sep-01-2016 01:53:08 PM

Re: New m3 and rod bearings
 
Go ahead and do the bearings believe me I just paid $8000.00 for a motor after I had a failed rod bearing the motor I bought had 60k miles and I had the mechanic change the bearings with BE bearings just as preventitive maintenance when the mechanic pulled the bearings out of the motorist just bought he said they had wear on them

E90m3nyc Fri, Sep-23-2016 05:54:35 PM

Re: New m3 and rod bearings
 
I plan to have my changed although I have low miles. I think if you plan to keep the car it's def wise to get them done. 2K>10K motor

pbonsalb Fri, Sep-23-2016 08:18:35 PM

Re: New m3 and rod bearings
 
One just failed with 17k miles.

Shockerg1 Mon, Oct-03-2016 04:18:59 PM

Re: New m3 and rod bearings
 
Well mine is at 126K Km and after hearing horror stories, i simply will not chance it any longer. My WPC treated OEM shells and ARP bolts just arrived... Gonna do them right away http://uploads.tapatalk-cdn.com/2016...c44972669c.jpg... Mine is a 2011 e92 M3 DCT btw


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williemandowa Sat, Oct-08-2016 12:35:51 AM

Re: New m3 and rod bearings
 
Good man Shockerg1 better safe then sorry I wish I would have known about this I would have happily spent $2000.00 over the $10,000.00 total it cost me

Shockerg1 Sat, Oct-08-2016 10:27:25 AM

Re: New m3 and rod bearings
 
Quote:

Originally Posted by williemandowa (Post 1067513227)
Good man Shockerg1 better safe then sorry I wish I would have known about this I would have happily spent $2000.00 over the $10,000.00 total it cost me



Man, i feel really bad for you. Its pains to see $10K flushed down the drain [emoji22]


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Shockerg1 Sun, Oct-09-2016 12:06:40 PM

Re: New m3 and rod bearings
 
So a quick update.... On the first 4 shells out..... I am thanking god i made the right decision.....

Pictures attached.... Caught in the nick of timehttp://uploads.tapatalk-cdn.com/2016...5a1e9086ca.jpghttp://uploads.tapatalk-cdn.com/2016...3ecb6e5741.jpghttp://uploads.tapatalk-cdn.com/2016...c9b6beafdc.jpghttp://uploads.tapatalk-cdn.com/2016...c7567b4a21.jpg

Cranks still is good... More pictures to follow shortly....


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Shockerg1 Sun, Oct-09-2016 12:20:20 PM

Re: New m3 and rod bearings
 
So a quick update.... On the first 4 shells out..... I am thanking god i made the right decision.....

Pictures attached.... Caught in the nick of timehttp://uploads.tapatalk-cdn.com/2016...5a1e9086ca.jpghttp://uploads.tapatalk-cdn.com/2016...3ecb6e5741.jpghttp://uploads.tapatalk-cdn.com/2016...c9b6beafdc.jpghttp://uploads.tapatalk-cdn.com/2016...c7567b4a21.jpg

Cranks still is good... More pictures to follow shortly....


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