[DeTomaso] Tach signal MSD vs Mallory

[Matt Wells]

I as well run the Duraspark2 system with no adapter needed for tach on my
stock engine.
Got me thinking what real advantages a Mallory or MSD or Unilite, etc.
system provides and when is one required.
Can anybody clue me in to at what point in an engine build is an after
market system necessary to provide enough spark?
Thanks,
Matt (clueless)

On Wed, Jul 3, 2019 at 2:17 PM B. SEIB <oldwheel at shaw.ca> wrote:

>  The issue of a requirement for an adapter is dependant on whether the
> box(or coil) supplies the signal or not. It really isn't related to the
> distributor type. I use a Duraspark magnetic trigger distributor with the
> Duraspark module and coil. No tach adapter is required because the
> Duraspark
> module tach output terminal is designed to give the same output as a normal
> ignition coil and points. The MSD doesn't do this, so the 8920 adapter is
> required. Perhaps the Unilite box does have a tach terminal that provides
> the same output as a normal ignition coil and ponts ?
>
> Barry
>
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-------------- next part --------------
   I as well run the Duraspark2 system with no adapter needed for tach on
   my stock engine.
   Got me thinking what real advantages a Mallory or MSD or Unilite, etc.
   system provides and when is one required.
   Can anybody clue me in to at what point in an engine build is an after
   market system necessary to provide enough spark?
   Thanks,
   Matt (clueless)

   On Wed, Jul 3, 2019 at 2:17 PM B. SEIB <[1]oldwheel at shaw.ca> wrote:

     A The issue of a requirement for an adapter is dependant on whether
     the
     box(or coil) supplies the signal or not. It really isn't related to
     the
     distributor type. I use a Duraspark magnetic trigger distributor
     with the
     Duraspark module and coil. No tach adapter is required because the
     Duraspark
     module tach output terminal is designed to give the same output as a
     normal
     ignition coil and points. The MSD doesn't do this, so the 8920
     adapter is
     required. Perhaps the Unilite box does have a tach terminal that
     provides
     the same output as a normal ignition coil and ponts ?
     Barry
     _______________________________________________
     Detomaso Email List is not managed by POCA
     Posted emails must not exceed 1.5 Megabytes
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     Members who post to this list grant license to the list to forward
     any message posted here to all past, current, or future members of
     the list. They also grant the list owner permission to maintain an
     archive or approve the archiving of list messages.

References

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