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Thread: 16mm swar bar bushing size...

  1. #1
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    16mm swar bar bushing size...

    I rounded up a nominally sized 16mm stock rear sway bar and I'm trying to determine what size bushing to use. I'm thinking it came from a '68. However, the bushing locations for the chassis mount and the drop link have a unique shape to them - they're not flat and are reduce in size to around 15mm+. This is a first for me. I've already ordered 16mm bushings, but now I think they may be oversized.

    1 - Has anyone seen a bar like that?
    2 - Could the age and wear have reduced the size (don't think so as the paint is shiney there)

    I'm attaching a crude, exaggerated pdf to illustrate the shape (better than a photo as it's pretty subtle).

    thanks,

    16mm rear bar.pdf
    kj
    73 E Targa

  2. #2
    This might encourage replies.
    16mmRearBar.jpg

  3. #3
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    Thank you. I'm also wondering if part of the bar is reduced in size for the bushings - if that essentially makes it a 15mm equivalent?
    kj
    73 E Targa

  4. #4
    A picture of the bar would help. Doesn't sound like a 68 bar.
    Early S Registry member #90
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    Fort Worth Tx.

  5. #5
    Yes. Any bar working in torsion is limited by its smallest cross section.
    Disregarding the end chamfers, I believe that the early rear stabilizer bars had a constant cross-section.
    PET-'65-'68_911,Fig5-1b,Stabilizer,Rear_800x400.jpg

  6. #6
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    A quick note before I take some photos...

    I just spent the big bucks and got "Porsche" 16mm bushings for the drop link section and the mating surface inside the bushing has a small groove in the center that corresponds with the contour of the bushings area of the bar. Interesting. Did 944s, others have such a bar?

    My bar looks like JimmyT's example.

    thanks,
    kj
    73 E Targa

  7. #7
    I don't know what you have, but the original correct bushings did not have any grooves in the bushing, or the bar under the bushing. Pictures would help.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  8. #8
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    ...hope this illustrates

    actually - 16.2 -16.3mm
    16mm2.jpg

    notice the hump in the middle and hard edge to the right - seems to be made that way
    16mm3.jpg

    I assume a corresponding (Porsche part) matching bushing
    16mmbush.jpg
    kj
    73 E Targa

  9. #9
    Nope, not made that way, diameter would be a consistant 16mm all the way. That is just simply worn down.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  10. #10
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    Okay. You are the 2nd very informed expert to say that. I guess after 50 years, the bushings can were out the metal - especially if dirt and crud grind away. Thanks for taking the time. BTW - I'm thinking '67 based on a PET of that period.

    thanks,
    kj
    73 E Targa

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