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MG MGB Technical - 6 cylinder to 8 cylinder rev counter

Does anybody know or point me in the right direction to convert a Smiths 6 cylinder revcounter to read 8 cylinders. Thanks Roy
R Mcknight

Hi ROY
It depends on the model of the tacho, but the last one I played with had an adjusting screw inside the tacho.
It was a simple matter of pulling the tach out of it;s housing and having a master tach hooked up to the car at the same time to adjust it up to
Cfeers Willy
William Revit

I ran into a similar problem when I fitted a custom distributor to my supercharged engine. The Smiths internals were not compatible with the distributer that I had installed. The easiest solution, for me, was to swap out the Smiths inside components, minus the face and needle, for an Autometer tach. With very few modifications, I wound up with a perfectly functioning tach that looked dead on original. RAY
rjm RAY

This thread was discussed on 15/04/2011

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