I had a '67 "BGT and when I redid the tach for neg earth I learned that the
size of the wire loop that goes though the "pickup" sensor block in the
tach was critical. (It should not make any diff. about pos or neg earth,
it's just that that's what brought me to the subject) If the loop is not
exactly the right length or size the tach will not read accurately and
seemed to read in multiples of the true rpm. I suggest you check that loop
and how it sits in that little sensor block doohicky (that's a very
technical term I reserve for items electricum)
TTFN
TCSYD
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> From: Les Gould <lesgould@gti.net>
> To: mgs@autox.team.net
> Subject: Tachometer
> Date: Tuesday, October 07, 1997 7:24 PM
>
> Hi All- I have a '67 MGB with "positive earth". The tach will not go
any
> lower than about 3,000 RPM no matter how low I set idle. Is there
> anything to be tried besides rebuilding the tach? And if it must be
> rebuilt, can I do it? (I can rebuild a player piano!) And, if it must be
> sent out, any recommendations as to where, or to whom? TIA, Les.
>
> 67MGB-hope to have it on the road soon
> 77MGB-hope I live long enough to see it on the road
> 61Sprite-wish I hadn't traded it in '66
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