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msd and tach adapters

Discussion in '308/328' started by Ferraripilot, Apr 14, 2009.

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  1. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,757
    Atlanta
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    John!
    #1 Ferraripilot, Apr 14, 2009
    I have performed a few searches in hopes of finding a specific answer to this, but I did not have the luck I hoped for. I found a couple threads from the boxer forums that state that installing MSDs on certain boxers does not require a tach adapter, and others do (cars that had digiplexes?). Can someone tell me if the points driver 308 ignition systems require a tach adapter or not? I am going to have my xr700s drive two msds but I need to know if a tach adapter is going to be required.

    thanks all.
    John
     
  2. david bentley

    david bentley Karting

    Jan 2, 2004
    182
    Saint Louis Mo US
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    David bentley
    #2 david bentley, Apr 14, 2009
    Just put two MSDs on my 1979 308 Sunday...great Easter Job
    Car runs great...tach does not read
    Sumit is sending the adapter they say will fix the problem
    Dave
     
  3. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
    Owner Rossa Subscribed

    May 4, 2001
    36,247
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    Tommy
    #3 Dr Tommy Cosgrove, Apr 14, 2009
    What about the same question for a 308 QV?
     
  4. johng

    johng Formula 3

    Oct 23, 2004
    2,298
    northern va
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    john g
    #4 johng, Apr 14, 2009
    yes you need one. mine has an MSD without the adapter and the RPM reading is not right.

    john
     
  5. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
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    John!
    #5 Ferraripilot, Apr 14, 2009
    good stuff. thanks all
     
  6. enjoythemusic

    enjoythemusic F1 World Champ

    Apr 20, 2002
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    Steven
    #6 enjoythemusic, Apr 14, 2009
    Tommy, Nick Forza had an adapter for the XDI boxes that worked great in the Qv.
     
  7. david bentley

    david bentley Karting

    Jan 2, 2004
    182
    Saint Louis Mo US
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    David bentley
    #7 david bentley, Apr 16, 2009
    Tach Adapter is in my hand....$ 37 from Summit
    Should get it in this weekend...will let you know how it works

    Dave Bentley April 17, 09
     
  8. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
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    John!
    #8 Ferraripilot, Apr 16, 2009
    Yes please keep us updated. As for my situation, because I will have my crane xr700s driving the msds, I am wondering if I will need a tach adapter. The signal is not coming from the points, but rather from the cr700 unit which is triggered by an optical sensor. I will keep everyone informed on this one unless someone else has an answer. Good thread
     
  9. Corsa308

    Corsa308 Formula Junior

    Apr 22, 2007
    290
    Sydney, Australia
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    Steve D
    #9 Corsa308, Apr 16, 2009
  10. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    Terry H Phillips
    #10 tazandjan, Apr 16, 2009
    Very interesting. I bought a 1970 Fiat Dino 2.4 liter, which had the Dinoplex missing. I fitted an MSD unit (1981 or so vintage) and could not believe how much smoother the engine ran. Hooked up the tachometer lead to the MSD and, presto, the previously dead tachometer worked perfectly. Times change and I bet the MSD units have, as well.

    Taz
    Terry Phillips
     
  11. david bentley

    david bentley Karting

    Jan 2, 2004
    182
    Saint Louis Mo US
    Full Name:
    David bentley
    #11 david bentley, Apr 21, 2009
    April 21
    Installed the tach adapter last night...Tach works!
    By the way, with the CD ignition, this engine has never run so well...
    idles smooth when cold , starts faster, and just purrs when warm...worth the work and money

    Dave
     

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