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Thread: Turner spherical m bearings?

  1. #1
    Join Date
    Jan 2004
    Location
    Toronto, Canada
    Posts
    1,330
    My Cars
    BMW 850CSi

    Turner spherical thrust arm bearings?

    Just came across these:

    https://www.turnermotorsport.com/p-3...-arm-bearings/

    Anybody try them yet? Any comments, concerns? How do they compare with Wokke’s?
    Last edited by Dr. T; 01-19-2018 at 03:14 PM.

  2. #2
    Join Date
    May 2013
    Location
    Salinas CA.
    Posts
    551
    My Cars
    1993 BMW 850CI
    Quote Originally Posted by Dr. T View Post
    Just came across these:

    https://www.turnermotorsport.com/p-3...-arm-bearings/

    Anybody try them yet? Any comments, concerns? How do they compare with Wokke’s?
    They are very well made. I picked up a set in December for $175 on Sale! I have the Moosehead engineering bearings already installed, and will most likely get another set of Lemforder arms for the Turner units, and try them out. One advantage of the Turners is a very good seal, as well as a circlip to keep them centered in the arm. The Mooseheads are a press fit, but are rebuildable.

  3. #3
    Join Date
    Jun 2010
    Location
    Hyperworld
    Posts
    888
    My Cars
    '97 840CI
    Six years later. $278/pr.
    Moosehead would have been yet another $100.
    There are yet other suppliers.
    At this time GenBMW solids are $50/ea, off-brands in the $20 range.
    Btw, E31 LCA's are $425/ea.

    >>> Would be interested in comments re:NVH, Turner v Moosehead v others.



    OTC 6297 for side access. E-style can't get in there.
    The tool's bolt head was 24mm iirc, whereas the upper ctrl arm hardware was 22mm.


    A 10 ton press plus misc tube laying around the shop made it a quick and trivial project.


    Press-out: about 3 tons. Almost nothing.


    Press-in: spiked to 7 tons. Getting serious.


    *** Footnotes ***
    * Raison d'etre: Shimmy returning after a dozen years, 20K miles.
    * Wanted to investigate spherical rather than solid.
    It's what BMW should have done.
    My decision to investigate made it a $300 project vs as little as $40 for a cheap refresh.
    * The ball joint end of the re-used arms were in great shape, boots still looking good.
    * I decided to have the flange face vehicle center so the brand and PN is visible.
    * One annoyance: The overall width (not diameter) was 0.050in less than solid bush, iow's the width of a thin washer.
    Since a loose washer might just get lost by the next service dude, I decided just to snug in the bracket at the X-frame.

  4. #4
    Join Date
    Oct 2016
    Location
    Shoreview MN
    Posts
    977
    My Cars
    Had a 1991 BMW 850

    Moosehead

    Moosehead worked great

  5. #5
    Join Date
    Oct 2002
    Location
    Cold Snowy North
    Posts
    7,160
    My Cars
    Misc.
    I had turners for 2 years; no issues.

  6. #6
    Join Date
    Jun 2010
    Location
    Hyperworld
    Posts
    888
    My Cars
    '97 840CI

    Report from the road

    Much better.
    I can report that the original issue is solved, after a little goofiness.

    I originally thought that I had made just that one change, installed the Turner's in place of the tired solids, and therefore this would be a good Before->After test with just one modification.
    But then a drove off and even my passenger was saying "What's wrong with your car?"
    Bang, bump.
    Bump, bang.

    After suffering that one drive I remembered that, prior to the swap, I had been jacking up the tire pressure, searching for relief from the steering vibrations.
    Minus 2 psi and things are moving back to "pleasant enough", yet no where near the modern ride of my 2018 C300.

    To recap:
    The degradation in solids was allowing a harmonic oscillation, which was the primary annoyance, quite significant and getting worse.
    However, once the Turner's had removed that primary oscillation, this then unmasked all the original exciters to that harmonic, and these were still affecting the chassis.
    Things like tire & wheel balance, loose joints, etc.
    Moving tire pressure from 36psi to 34 (by my gauge) seemed to quiet down the chassis vibration and the expansion strip reporting.
    Fyi, before the current episode I had been running in the 30-32psi range. Maybe I'll return there.

    If I were a picky owner, someone who cruises blissfully, I'd next refresh all other tired bushings, joints, etc., including the back end.

    *** And one more thing ***
    By "much better" I mean that refreshing the upper arm bushings removed the problem.
    I do not mean to say Turner balls are better than OEM solids.
    Rather the after is much better than the before.

    New vs new, I'd be hard pressed to tell the difference (in response) in casual driving.
    So if you're on a budget, there is no shame in staying OEM.
    Last edited by Hyper; 12-04-2023 at 10:20 AM. Reason: One more thing

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