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Thread: Tach conversion for MSD ignition

  1. #1
    Senior Member
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    Oct 2002
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    442

    Tach conversion for MSD ignition

    I am in the process of changing over my ignition on the rally car to a MSD arrangment. I would like to avoid having to use 2x tach adapter modules that MSD sells. Apparently it is possible to have the guts of my original 1970 tach modified to accept the MSD signal?? Anyone had this done at Palo Speedo or Hollywood??

    Thanks for the info, launch is 2 weeks and counting to fire the 'ole girl up.

    Jim

  2. #2
    Very nice work!
    #711 - expires 12/05
    1972 911T - Sepia 3.2 - For Sale

  3. #3
    Senior Member
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    Oct 2002
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    442

    Pictures

    How do the pics get posted into the text of the message? I'm off to the FAQ to find out.

  4. #4
    Senior Member
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    try again

    a few more pictures

  5. #5
    Senior Member
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    one at a time

    OK starting to get the hang of the new system

  6. #6
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    442

    last one

    one last one......

  7. #7
    edit: Nevermind, looks like you got it.
    #711 - expires 12/05
    1972 911T - Sepia 3.2 - For Sale

  8. #8
    Senior Member
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    12 plug

    12 plug dizzy

  9. #9
    Junior Member
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    Nov 2002
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    Baltimore, MD
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    Jim,

    North Hollywood Speedometer (818.761.5136) can modify your tach to accept the signal you provide to the tach. When I converted my '71 S to an MSD-6AL ignition system, I used a '73 E tach on which NHS modified the signal board to accept the 12 v peak-to-peak signal off the points ('67 S distributor). The MSD's tach output port is also a 12V pulse, but check your install instructions. I got the impression they were able to modify the input board to suit your needs - you just have to tell them what the input is.

    At the same time, for an additional charge, they silk-screened the S redline. Good workmanship and turnaround was about 4 weeks.

    BTW - nice motor and workmanship on your car.

    Andy

    '71 S
    '88 M3
    '99 748

  10. #10
    Wouldn't this depend on the type of distributor you have?

    Porsche has used points, and various "new-fangled" things after that.

    Also, it would probably depend on the year of the tachometer(?)

    Anybody know for sure?

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