| A data point: 
I have a pre-2001 Smiths tach with positive-ground Pertronix ignition on my 
BJ8. I calibrated the tach against a Craftsmen dwell/tach, and double-checked 
RPM and MPH with my 3.54 rearend and 185/70R15 tires. The tach is absolutely 
dead-nuts on and rock solid at all engine speeds (I did have to reverse the 
inductive pickup loop on the back, not surprisingly). 
I've often wished I could get an electronic speedometer. 
Bob 
-------------------------------- 
Bob Spidell - San Jose, CA 
----- Original Message -----
From: warthodson@aol.com 
To: healeys@autox.team.net 
Sent: Wednesday, July 27, 2011 8:00:59 AM 
Subject: [Healeys] Smiths Tach Conversion 
Recently, we have been told by Nisonger that that Smiths electronic tachs may 
malfunction when connected to a distributor using a Pertronix ignition. 
... 
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