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Thread: Factory Alloy calipers option on Pre- 1974MY , any referance in Factory lit. ?

  1. 09-20-2011, 06:47 PM #1
    peekaboo
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    Factory Alloy calipers option on Pre- 1974MY , any referance in Factory lit. ?

    I was reminded of this in another thread.

    Was there really this option , either as part of a group OR by itself ?

    I have never been able to find any factory reference to alloy front calipers being either part of M470 ('Appearance group' ) . Or available separately either.

    I've asked this one before , no one ever came up with any referances in Factory literature . If it was a reality , then it has to be listed somewhere.
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  2. 09-20-2011, 06:59 PM #2
    Flieger
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    Sportomatics all had them, for one thing. 911E with optional Koni suspension (instead of hydropneumatic) had them I think.
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  3. 09-20-2011, 08:04 PM #3
    Chuck Miller
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    Hydropneumatic did have them........
    Last edited by Chuck Miller; 09-20-2011 at 08:09 PM.
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  4. 09-20-2011, 08:13 PM #4
    Flieger
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    I stand corrected.
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  5. 09-21-2011, 06:06 AM #5
    davep
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    Max, I think you are correct. The Koni struts were all S type I believe, and the Sporto's got them as did the Hydropneumatic. Besides that I think they were optional on other cars. Possibly the S calipers were a 'hidden' option in conjunction with the Koni option. M402 option seems to be one, but I'm not sure what years this one applies to.
    Last edited by davep; 09-21-2011 at 06:15 AM.
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  6. 09-22-2011, 10:21 AM #6
    mike curnow
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    My 1972 Sporto 911T, which I bought in approx 1975 did not have them.

    Quote Originally Posted by davep View Post
    Max, I think you are correct. The Koni struts were all S type I believe, and the Sporto's got them as did the Hydropneumatic. Besides that I think they were optional on other cars. Possibly the S calipers were a 'hidden' option in conjunction with the Koni option. M402 option seems to be one, but I'm not sure what years this one applies to.
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  7. 09-22-2011, 10:25 AM #7
    Flieger
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    Must have been removed by the previous owner before sale, then. The Sportos got them because there was hardly any engine braking with the torque converter.
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  8. 09-22-2011, 04:31 PM #8
    Harvey Weidman
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    Quote Originally Posted by davep View Post
    Max, I think you are correct. The Koni struts were all S type I believe, and the Sporto's got them as did the Hydropneumatic. Besides that I think they were optional on other cars. Possibly the S calipers were a 'hidden' option in conjunction with the Koni option. M402 option seems to be one, but I'm not sure what years this one applies to.
    My 73 T has all of the S Pack trim, guages, sways etc. and it has Koni struts with small brakes. The S brakes were a seperate option.
    Both Koni and Boge had both brake bolt patterns. I have never seen Bilstein with the small brakes though.
    H
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  9. 09-22-2011, 05:02 PM #9
    Flieger
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    Interesting, I thought all the Porsche Koni struts had 3.5" bolt spacing.
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  10. 09-23-2011, 05:13 AM #10
    davep
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    Quote Originally Posted by Harvey Weidman View Post
    it has Koni struts with small brakes.
    Very interesting! What are the part #'s on the struts please?
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