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Thread: Wanted: One 915 LSD Drive Flange

  1. 08-19-2011, 12:58 PM #1
    gled49
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    Wanted: One 915 LSD Drive Flange

    WTB a single course spline 915 LSD Drive flange. 110 mm dia. with 4 10mm bolts & 2 dowel, 103 mm total length and 61mm plunge depth from end of splines to the seal shoulder. A 915 casting # is sometimes readable. I have a single 901 LSD drive flange if someone needs one. It will fit in a Mag box. Gordon
    Last edited by gled49; 08-22-2011 at 07:52 AM.
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  2. 08-22-2011, 07:55 AM #2
    gled49
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    Bump, someone must have an odd drive? Thanks Gordon
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  3. 08-22-2011, 09:14 AM #3
    Frank Beck
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    That's an oddball- course spline up to '75; most were fine spline.
    You don't have any later 6 bolt course spline LSD flanges do you? I could use some of those.
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  4. 08-25-2011, 06:55 AM #4
    gled49
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    Bump, still looking. Gordon
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  5. 08-25-2011, 08:27 PM #5
    mike curnow
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    frank, are you saying lsd had fine splines up to 1975/
    Mike
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  6. 08-26-2011, 04:41 AM #6
    Frank Beck
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    That's been my experience.
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  7. 08-26-2011, 10:00 AM #7
    Steve@Rennsport
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    Hey Gled,

    FWIW,.....I've made one by machining a non-LSD coarse-spline flange. Worked perfectly!!
    Steve Weiner
    Rennsport Systems
    Portland Oregon
    503.244.0990
    E-mail: porsche@rennsportsystems.com
    http://www.rennsportsystems.com
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  8. 08-26-2011, 01:51 PM #8
    gled49
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    All early LSD's for Mag cases (911/915) had coarse spline. If they had coarse splines they required the +5mm plunge depth. Late LSD's had a drive flange with a flat bottom at the spline end and they were +5mm and were interchangable in open diffs. The only exception to the fine spline LSD is 76-77 Turbo that required a +5mm hollow end drive flange. You could machine the end of a flat bottom drive flange hollow or machine off the nipple on the threaded piece inside the diff. gled
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  9. 08-27-2011, 01:15 PM #9
    mike curnow
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    This has been my expereince also

    Mike
    Mike
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