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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Sep-17-2013, 12:28:58 PM   #31
Obioban
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Default Re: Rod Bearings

Maybe post 2/3 about plastigauge and checking for crank scoring?
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Old Tue, Sep-17-2013, 01:05:03 PM   #32
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Default Re: Rod Bearings

Epic DIY, well played good sir I have a feeling this will be something I tackle one day.


Don or Suaveflooder should add this to DIY sticky
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Old Tue, Sep-17-2013, 01:48:23 PM   #33
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Default Re: Rod Bearings

Very Nice DIY! Its awesome that you have the time and patience to do such a detailed write up, while doing such a time consuming job. Whats the average time frame to change the bearings? Yours didnt look bad for having 120K
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Old Tue, Sep-17-2013, 02:42:48 PM   #34
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Default Re: Rod Bearings

subd... thanks for sharing
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Old Tue, Sep-17-2013, 03:56:42 PM   #35
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Default Re: Rod Bearings

Quote:
Originally Posted by trantamthien View Post
In for epicness. Will be following these instructions this weekend.

Also here is a link to BMW's instructions on replacing them. It goes in detail the parts needed for what years.

http://members.roadfly.org/kmurph/BearingsSB.pdf
Thanks for the link! Good luck doing this. Pretty long but where else can you see the heart of your engine?

Quote:
Originally Posted by Obioban View Post
Nice work
Thanks Ian
Quote:
Originally Posted by kmfurdm View Post
Great job putting it together.

I will not be doing this one.
Pretty lengthy but necessary as these cars pile on the miles

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Originally Posted by 05Mdriver View Post
nice work man !
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Originally Posted by Schitzel View Post
HOLY SH@T!!!!!

Very, very well done.
Thanks!

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Originally Posted by intelone View Post
Your old bearing doesn't look bad. You mentioned the car has 130k, but what's the actual milage on the bearing due to the rod bearing recall replacement?

I'm looking through the records and will post if I find it
The bearings definitely don't look bad. Much better than I was expecting.
I've asked an engine builder for his opinion of the bearings, let's see what he says. I'll post it in #3
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Old Tue, Sep-17-2013, 03:59:55 PM   #36
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Default Re: Rod Bearings

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Originally Posted by drrwise View Post
Great write up (as always) - thanks.

Did you have more than one blackstone reading? Also how did Cu and Fe look?

I suspect not that many data points out there with a blackstone followed by physical bearing inspection.
I will post both readings as soon as I get them. They'll go into one of the reserved slots at the top.
An oil analysis was shipped to blackstone right before starting
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Originally Posted by 0-60Motorsports View Post
Awesome DIY! Thank you.
Quote:
Originally Posted by Moosecakes View Post
dude seriously thank you! I'm going to be doing this as soon as time permits and this makes me feel a lot better, it really doesn't seem very hard, just very tedious work and small area!

You're welcome. It's lengthy but lacks conceptual mumbo jumbo which is what catches people that follow the Vanos DIY

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Originally Posted by chalaka View Post
Thank you for taking the time to document this
You're welcome
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Old Tue, Sep-17-2013, 04:05:53 PM   #37
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Default Re: Rod Bearings

Quote:
Originally Posted by 09raven View Post
Just thinking out loud, but would it be any easier to actually pull the motor with a cherry picker and access the oil pan and bearings that way, disconnecting headers, tranny, motor mounts, fan, and associated lines, put it on an engine stand and rotate it so the crank is facing up? Or, would the whole front end have to come apart to get the block out?

Anyways great write up, enjoyed reading through it.
That would be nice, but every time I see these engines out of the car they're removed from the front.
If I got the engine out I'd change piston rings and probably get stroker rods.
Maybe that will be the next DIY lol

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Originally Posted by Obioban View Post
Why did you use RTV on the oil pan gasket? Shouldn't be necessary and will make disassembly at 260,000 a bit of a pain...?
Might not be necessary, but too many bad experiences with oil pans. Those bolts are like butter and strip when tightened, I prefer this approach.
We'll probably open it again before 260

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Originally Posted by terraphantm View Post
This is something I've been wondering myself. Sure would be nice to be able to do the rod bearings with the engine out of the car
Would be nice!

Quote:
Originally Posted by Obioban View Post
Maybe post 2/3 about plastigauge and checking for crank scoring?
Have to add the link of plastigauge. Seems quite easy to do.

Quote:
Originally Posted by BlazenXLT View Post
Epic DIY, well played good sir I have a feeling this will be something I tackle one day.


Don or Suaveflooder should add this to DIY sticky
Sooner or later you'll have to if you want to keep this wonderful car!

Quote:
Originally Posted by Mr_Beef__ View Post
Very Nice DIY! Its awesome that you have the time and patience to do such a detailed write up, while doing such a time consuming job. Whats the average time frame to change the bearings? Yours didnt look bad for having 120K
I don't know. Not enough empirical evidence. Usually they don't look very good at 100k.

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Originally Posted by gnoy26 View Post
subd... thanks for sharing
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Old Tue, Sep-17-2013, 04:20:26 PM   #38
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Default Re: Rod Bearings

I just left my car in the shop for this procedure. Have no tooling but most important time to do it myself. Although I do it as preventive action since the engine runs just fine I'm still keen to know the result of crank/rods status after the guys dismount it tomorrow. The rest is routine.

Good job!
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Old Tue, Sep-17-2013, 05:31:54 PM   #39
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Default Re: Rod Bearings

Quote:
Originally Posted by 09raven View Post
Just thinking out loud, but would it be any easier to actually pull the motor with a cherry picker and access the oil pan and bearings that way, disconnecting headers, tranny, motor mounts, fan, and associated lines, put it on an engine stand and rotate it so the crank is facing up? Or, would the whole front end have to come apart to get the block out?

Anyways great write up, enjoyed reading through it.
Pull engine > repair and replace all vanos parts and rod bearings on an engine stand.

This might be a good winter project.

Very nice thread OP. Hopefully your pics won't ever disappear like they do on old threads so frequently.
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Old Tue, Sep-17-2013, 05:42:07 PM   #40
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Default Re: Rod Bearings

^photobucket should be secure.

If you have access to a lift, I don't think you're saving much doing it out of the car than in, and taking the engine out/in is a fair bit of effort. Takes it from a one day project to a 3 day project, imo.

Not sure there's any benefit to doing the Beisan stuff with the engine out of the car.
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Discussing Rod Bearings in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)