I had an MSD 6a on my 73. I spend some time with MSD tech to try to
get my tach to work correctly. In the end, It was easier to replace
my tach with a VDO model tach that would work when plugged into the
tach output of the MSD.
don't attempt to pull plug wires from a running engine with one of the
babies installed. The spark kicks like a mule! (don't ask)
Glenn Schnittke wrote:
> I've a couple of questions for the rocket surgeons.
>
> '67 B, converted to neg ground by DPO.
>
> The tach has always read about double what the actual revs are.
> Tried a new voltage regulator and it fixed the problem with the
> other gauges, but not the tach.
>
> 1. Realizing the DPO might not have done the conversion right, what
> could be causing the tach to read double (or so) the actual revs.
>
> 2. I will be installing an MSD5 kit soon. I'd like to know what has
> to be done to the tach. I put one in the Jag and the tach swings
> wild but drives a lot better.
>
> Glenn Brute Force and Ignorance! - Kelvin Dodd
>
> Glenn Schnittke g.schnittke@comcast.net
> glenn.schnittke@vanderbilt.edu
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