[DeTomaso] Hooking an MSD 6AL Rev Limiter to disengage the A/C Compressor

[Forest Goodhart]

You could use an MSD 8950 rpm switch and relay for this.
Forest
      From: Dave <davel at emspace.com>
 To: detomaso at server.detomasolist.com 
 Sent: Thursday, June 9, 2016 12:28 PM
 Subject: Re: [DeTomaso] Hooking an MSD 6AL Rev Limiter to disengage the A/C Compressor
   
  Hey Rob

  A 6AL only limits the coil drive output.

  A 6AL-2 or a 6AL plus has a Retard Step output
  "Retard Step. This retard is activated when 12 volts are applied and
  rpm is above the Step1 Rpm value."

  It's meant to keep those 14:1 motors from blowing the teeth off the
  ring-gear,
  but just program it to go true at 4000 and do your thing with a relay.

  dave


  On 6/9/2016 6:19 AM, Rob Dumoulin wrote:

  It appears engine revs killed my Sanden rotary compressor.A  That or it
  was a cheaper build.A  Regardless, my new motor will rev even higher
  and this time I am installing a high-pressure shut-off valve.A  In
  addition, I'd like to use the rev limiter feature of the 6AL to shut
  off the compressor so I won't kill another one.
  I have heard of such a mod but have not seen technically how to make it
  work.A  Anybody know what MSD parts are needed and how to hook it up to
  the A/C?
  RobA


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-------------- next part --------------
   You could use an MSD 8950 rpm switch and relay for this.
   Forest
     __________________________________________________________________

   From: Dave <davel at emspace.com>
   To: detomaso at server.detomasolist.com
   Sent: Thursday, June 9, 2016 12:28 PM
   Subject: Re: [DeTomaso] Hooking an MSD 6AL Rev Limiter to disengage the
   A/C Compressor
     Hey Rob
     A 6AL only limits the coil drive output.
     A 6AL-2 or a 6AL plus has a Retard Step output
     "Retard Step. This retard is activated when 12 volts are applied and
     rpm is above the Step1 Rpm value."
     It's meant to keep those 14:1 motors from blowing the teeth off the
     ring-gear,
     but just program it to go true at 4000 and do your thing with a
   relay.
     dave
     On 6/9/2016 6:19 AM, Rob Dumoulin wrote:
     It appears engine revs killed my Sanden rotary compressor.A  That or
   it
     was a cheaper build.A  Regardless, my new motor will rev even higher
     and this time I am installing a high-pressure shut-off valve.A  In
     addition, I'd like to use the rev limiter feature of the 6AL to shut
     off the compressor so I won't kill another one.
     I have heard of such a mod but have not seen technically how to make
   it
     work.A  Anybody know what MSD parts are needed and how to hook it up
   to
     the A/C?
     RobA
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   osted here to all past, current, or future members of the list. They
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   t messages.
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     2. [4]http://server.detomasolist.com/mailman/listinfo/detomaso
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