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      09-02-2021, 10:00 PM   #1
ashak7773
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Question DIY Rod Bearings

Hi all, I'm wanting to get a 2008 BMW M3 with 57k miles in a true manual, and I've read the engine is derived from the notorious v10 and some of the v8s have seen the same bearing issue. For peace of mind how hard would it be to DIY the rod bearings in my garage? I have jack stands and normal tools including torque wrenches. Will I need and specific to BMW tools? Can this engine be done while still in the car or does it need pulled? I have engine tear down experience, but it was on a seized push rod v8, so a bit different with lower stakes. But I feel this is within my ability.
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      09-03-2021, 09:23 AM   #2
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https://www.bimmerpost.com/forums/sh...php?p=20971159
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      09-03-2021, 10:39 AM   #3
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I'd say 6/10 difficulty if you've got engine teardown ability. I've done it 3 times now on different cars and it's not super difficult. Many people i see remove the entire subframe, which does not need to be done. You can just hand the subframe by the shocks, and there's plenty of room to wrench.
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      09-11-2021, 07:33 PM   #4
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Love to see the DIYers! It’s much more patience, care and attention to detail than experience as a mechanic. I did it twice on a lift, but people have done these cars on jack stands and the DIY thread is pretty good.

I would use a good quality torque wrench, and if you use stock rod bolts, a digital angle wrench would be best but you can use a degree pointer if you are careful. You do need metric tools and female/make torx. Some oil bolts are recessed pretty deep. The DIY thread may have a tool list - make sure you have them or have a friend who does.
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