E46 ///M rod bearing failure

Peter@AEW

BMWFanatics Advertiser
Official Advertiser
Oversize bearings only come in two sizes.

From that rod I suspect that the crank is at the limit and the rod may well have a twist.....
 

Xack

Active member
a1exander said:
Oversize bearings only come in two sizes.

From that rod I suspect that the crank is at the limit and the rod may well have a twist.....

You know what I am wondering Peter, is how much of the damage actually got done by the oil starvation and how much did the bearing shells have after 196km on them (impressive by the way)...I am thinking they, we're probably close to the end of their life span,got pushed over the edge with the oil spill...
 

AndreasSA

Member
That's bad....:RedNo:

Has one of you guys a (rough) figure of costs to replace the bearings without having a damage yet? And what would be the cost of the (better) not OEM solution bearings?

My M has 72000 km now, I will replace them now....you can never be sure how they look like and I rather prefere to change them too early....:praise:
 

Crash_Nemesis

///Member
S54 Vac motorsports performance coated bearings

Rod bearings are $399
http://store.vacmotorsports.com/vac-performance-coated-rod-bearing-set-bmw-s54-engine-p1336.aspx

Main bearings are $199.95
http://store.vacmotorsports.com/vac-high-performance-main-bearing-set-s54-p2050.aspx

Rand dollar is at R12,40 at the moment.

So R4947,60 for rod bearings and R2479,38 for main bearings.

R7426,98 + import and duties, which from my experience is usually around R1500 +-, but at worst case, call it R2k with Vat and duties.
 
Well so far, new oil pump R9700, bearings from bmw, and you can get one oversize, R5500, a set of rings R8500. Hassle is I can't get a single conrod, they only come in sets. And a set is R40k... Any of you got a rod with the M10 bolts lying around thats in good nick? It looks like that journal will cut clean at 2 thou. Just keep fingers crossed that the crank didn't bend there. What about timing chains etc? Wouldn't it be a very good time now to sommer change them while you in there? Crash I must get to a pc to see those videos of yours.


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Tehwalleth

Banned
The timing chain is good for much longer but suppose it is cheap enough to replace. Look at the guides and the tensioners. Forged imported conrods are much cheaper than what BMWSA want, also not sure if a new oil pump is really needed. Rebuild crank from BMWSA with matched bearings is also not that expensive if you bitch and moan at the parts counter.

http://store.vacmotorsports.com/vac---s54--s50b32-euro-high-volume-competition-oil-pump-p1033.aspx

Have a look at if this is not rather a better option, if you are going to change the pump might aswell go big.
 
Tehwalleth I just did. 18k for a crank and bearings. And peace of mind that it is a new crank. I would like some input as to oil pump options. I cant imagine that that oil pump is faulty, and i dont recall reading about oil pump failure on these engines.


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Tehwalleth

Banned
flyitlikearental said:
Tehwalleth I just did. 18k for a crank and bearings. And peace of mind that it is a new crank. I would like some input as to oil pump options. I cant imagine that that oil pump is faulty, and i dont recall reading about oil pump failure on these engines.


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See not that bad, just remember not new its a remanufactured unit, new ones are almost impossible to get and twice as much. Still i would advise on getting the VAC bearings unless you intend to sell the car in the next 100k.

Me i am leaving my oil pump as is when the rebuild starts. Unless something failed in it i see no point in fixing something that ain't broke.
 
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At least I can appreciate all the purdy bits in the house now ;) the bed is reserved for the head/crank/pistons. The good stuff :) If we get guests to sleep over they'll have to accept the couch lol. My vrou gaan my hard m@er...


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Ratslaaf

///Member
My wife almost fainted when I showed her the pic. :roflol: thanks man, my wife now has proof that there are people out the with bigger obsession than me.
 

AndreasSA

Member
flyitlikearental said:
Tehwalleth I just did. 18k for a crank and bearings. And peace of mind that it is a new crank. I would like some input as to oil pump options. I cant imagine that that oil pump is faulty, and i dont recall reading about oil pump failure on these engines.


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I know that a lot of oil pumps of the M3E46 failed....ok, it's not the pump itself but the pressure regulating piston inside the pump casing...
 

Maljan

Active member
Just had a thought. The old crank would make a fine coffee table ornament. What a conversation piece that would be!

The Wife might not agree with me... :bin:
 
[/quote]

Store the Viscous fan in an upright position, unless you are going to replace it in any case
[/quote]

Why is that?


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Damn this is not for the feignt of heart... Nothing too technically challenging but my word is it a truck load of work. Hopefully me and the S54 will clock into Peters sometime in the week...


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