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  1. #1
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    Lightbulb Z4M Bearing wear -35k mile car

    Click here to enlarge

    This car has ~35k miles on it. These are the upper rod bearings. We didn't expect to see this wear on such a low mile late model S54.

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    Well....we know what cylinders were burning too fast! Was a single nozzle nitrous system installed at one point?
    Rep Points > Posts since 2010

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    How did the pistons look?

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    How do you prevent this?

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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    ugh..

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    2 out of 2 members liked this post. Yes Reputation No
    Now i'm paranoid about the condition of my bearings...

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    Click here to enlarge Originally Posted by brokenm3 Click here to enlarge
    Now i'm paranoid about the condition of my bearings...
    As you should be.

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    Stock or modified S54? Street or track toy? Could've been a very abuse 35k, not that it's a good excuse
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    Even though my car wierdly got the rod bearing recall (even though it is 03.5), I am still paranoid about this. Im going to order Vac coated bearings and ARP Hardware and do this again next time I change my oil.
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

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    1 out of 1 members liked this post. Yes Reputation No
    Saw similar wear on an 80k mile 2005 convertible, street car, never tracked, owned by a responsible female. We've also seen a LOT of broken exhaust sprocket tabs for the VANOS oil pump drive in the last 6 months.
    James Muskopf
    RRT Racing
    2007 E92 335i/6MT Procede Rev3 w/PWM meth, otherwise stock
    E28 M5, R171 SLK320

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    Click here to enlarge Originally Posted by JamesM3M5 Click here to enlarge
    We've also seen a LOT
    Who is we?

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    Stock street car, nothing crazy. It was a bit of a surprise for sure.

    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    Stock or modified S54? Street or track toy? Could've been a very abuse 35k, not that it's a good excuse

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    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    Stock street car, nothing crazy. It was a bit of a surprise for sure.
    How do you address/prevent it?

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    1 out of 1 members liked this post. Yes Reputation No
    Upgrade to the following and live life without fear Click here to enlarge We have sold 1000s of these - all good.

    http://store.vacmotorsports.com/vac-...set-p1336.aspx
    http://store.vacmotorsports.com/arp-...kits-p124.aspx

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    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    Upgrade to the following and live life without fear Click here to enlarge We have sold 1000s of these - all good.

    http://store.vacmotorsports.com/vac-...set-p1336.aspx
    http://store.vacmotorsports.com/arp-...kits-p124.aspx
    Is the install a huge pain?

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    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    Upgrade to the following and live life without fear Click here to enlarge We have sold 1000s of these - all good.

    http://store.vacmotorsports.com/vac-...set-p1336.aspx
    http://store.vacmotorsports.com/arp-...kits-p124.aspx
    Mike I sent you an email amillion years ago about this............NO reply....... Would love to get this for my car..... No hurry though.
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    Upgrade to the following and live life without fear Click here to enlarge We have sold 1000s of these - all good.

    http://store.vacmotorsports.com/vac-...set-p1336.aspx
    http://store.vacmotorsports.com/arp-...kits-p124.aspx
    Can you explain if and why the vac coated bearings are better than for example the ones that bimmerworld sells(treated)? I'm asking this question, because the bearings are on my to do list, and i'd like to choose the proper bearings. If it maters, the engine in question is a sc'd s54. Thanks.

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    1 out of 1 members liked this post. Yes Reputation No
    I've come across two (2) Z4/M Coupes with identical wear, both were right on 60,000 miles. The first one-owner car had an admitted fifty (50) track days, and car #2 had been recently purchased with no known prior history.

    Here's links to the work done from another forum:
    http://www.bimmerfest.com/forums/sho...d.php?t=579615
    http://www.bimmerfest.com/forums/sho...d.php?t=644245

    I'm a firm believer in the polymer coated (dry-film lubricant, thermal barrier, thermal dispersant, what-have-you) process; I've been doing my own treatment of internal/external engine components since 1992. I haven't built an engine without using them since, and I think it's a simple ommission to not use a dry-film lubricant on the bearings (and piston skirts) at a bare minimum.

    A recent batch of S-54 connecting rod bearings:

    Click here to enlarge

    A couple of sets of Austin-Healey pistons with DFL coated skirts and heat-shielded crowns (GREAT for cars with forced induction, but a benefit to all levels of rebuilds):

    Click here to enlarge

  19. #19
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    Click here to enlarge Originally Posted by Randy Forbes Click here to enlarge
    The first one-owner car had an admitted fifty (50) track days, and car #2 had been recently purchased with no known prior history.
    Pretty interesting they would have similar wear isn't it?

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  20. #20
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    Can anyone elaborate on the pros/cons of using either treated or coated rod bearings?

    @Mike@VAC do you recommend upgrading the rod bolts while you're in there? For example, ARP rod bolts?

    I am strongly considering doing this during the Winter.
    2002 E46 M3 6MT | Jet Black . Black Nappa | My GermanBoost Build Thread
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    Click here to enlarge Originally Posted by flipm3 Click here to enlarge
    Can anyone elaborate on the pros/cons of using either treated or coated rod bearings?

    @Mike@VAC do you recommend upgrading the rod bolts while you're in there? For example, ARP rod bolts?

    I am strongly considering doing this during the Winter.
    Me too, Haven't heard back from Mike in forever Click here to enlarge
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

  22. #22
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    Click here to enlarge Originally Posted by 0-60Motorsports Click here to enlarge
    Me too, Haven't heard back from Mike in forever Click here to enlarge
    Hopefully he responds soon. He's always fun to exchange PMs with Click here to enlarge

    But yeah, I had big plans to do some major re-haul on various mods on my car. I realized I had two routes to take. Either spend a hefty amount modifying my car and making it quicker. Or, spend a hefty amount and make sure my car doesn't die in the next handful of years. I am starting to lean towards the latter, haha. I had a valve adjust about a year/7,000 miles ago and my hubs were in tact. I proceeded to upgrade my cam bolts as well. Hopefully that remains strong until my next valve adjustment.

    I had the Rod Bearing warranty done bazillion years ago, but I am hearing that it actually isn't the best fix or at least a bulletproof remedy.

    Right now, I am debating between the VAC Motorsports Coated and Epic Motorsports Treated.
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    Click here to enlarge Originally Posted by flipm3 Click here to enlarge
    Right now, I am debating between the VAC Motorsports Coated and Epic Motorsports Treated.
    What's the debate?

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    What's the debate?
    I hear that by going with the "coating" method that it adds layers on top of the already tight tolerance of the rod bearings. But then some argue that it doesn't have any ill effects. When the rod bearings are treated, supposedly they remain the same dimension and size.

    Which is why I am curious to hear if there really are any difference. VAC Motorsports Coated Rod Bearings are noticeably cheaper than some of the treated options out there. Considering that this will be a pricey preventative maintenance, I'd like to save where I can but still have an optimal solution.
    2002 E46 M3 6MT | Jet Black . Black Nappa | My GermanBoost Build Thread
    2009 E90 M3 DCT | Melbourne Red . Speed Cloth

  25. #25
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    even though my car has had the recall done, i would still like to replace the bearings with caoted ones. my recall was done 30,000km ago, car is at 59k kms now. I would love to get the VAC product if they would reply to my email soon.
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

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