Michael
I don't know about a post 2 weeks ago but here is one the Mike
Michels posted 2 years ago.
Maybe it will help.
Ron Fraser
Hello, List.
SInce joining the Tiger owner ranks I have come to greatly appreciate the
help and expertise from members of the list. I hope the following
information serves to return the favors in a small way.
Since I have an MSD breakerless distributor (but without the multiple
discharge electronics box), I recently had my original style tach rebuilt by
MoMa, who installed a modern VDO movement and electronics. Unfortunately,
when I installed it, it behaved quite erratically: it read at least double
correct RPM when major electrical accessories such as lights, blower or turn
blinkers were switched on. And above about 3000 RPM, it completely lost
track and went berserk. WIth no electrical accessories, it did read
approximately correct at idle speeds, but not consistently.
After discussion with helpful folks at MoMa and MSD, I was able to get it
resolved. MSD sent me several parts to try, free of charge. If these didn't
work, they recommended their tach converter, which costs about $60.
Fortunately, two simple components they sent did the job:
Connect in series between the coil negative and the tach trigger input lead:
1) a 10k ohm, 1/2 watt carbon resistor and
2) a 1N5818 Switching Diode. MSD recommended to try the cathode (striped
end) toward the coil, but to reverse it if this didn't work. Cathode toward
the coil worked
WIth these two parts, my tach works perfectly.
I hope this may be of help to others with MSD or other types of electronic
ignitions.
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of michael king
Sent: Wednesday, February 17, 2010 6:09 PM
To: Tiger Talk List Tiger
Subject: [Tigers] tach help
A few weeks back someone (maybe tom hall) posted a part number for a module
that you use with the multi pulse elec igntion systems to get the tach to
work.. i cant find it.. anyone save that?
--
Regards
Michael King
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