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MG MGB Technical - Voltage stabalizer

Hi I am visiting here from the MGA site. My 1961 MGA has an MGB Fuel tank and guage. The guage reads backwards and I'm told I need a voltage stabilizer to make it right. The instructions say not to install it more than 20deg. off center. Ok which way is up. Does the mounting screw go on the top or bottom.
Thanks
Kris
Kris Sorensen

Kris - A voltage stabilizer won't do a thing about the gauge reading backward, it's purpose is to establish a constant voltage to the gauge so it doesn't go up and down as the voltage increases and decreases with RPM. I assume that you have a MGB sending unit if you also have a tank from a MGB and that "which way is up" refers to the sending unit. I am not sure how to describe which is up or down, other than the bend in the arm for the float should be pointing down. Good luck - Dave
David DuBois

Kris, You need to research which tank, sender and gauge you have which will then dictate if the set up is usable at all and if it needs a stabilizer.

There were 2 early MGB senders >65 fitted to the strap-type tank with 6 screws. There were 2 later style tank types, using a bayonet ring fitting sender.

The earliest guage type was Jaeger >64 and was "direct acting" without a voltage stabilizer, the needle would swing around with the fuel.

All MGB did swing the same way afaik but I believe MGA and early Frogmidgets went the other way. Could be you have an MGA guage and an MGB sender (but we don't know which type sender). If you do have an MGA gauge I don't think it is usable so decide on an MGB set up that will fit whichever tank you have.

So, the sender must be right for the tank and also for the gauge. A post 64 sender/guage (Smiths MGB) will need a stabilizer. If you use a late gauge on an early sender without stabilizer btw it will just swing to full.

Rich.

Rich

This thread was discussed on 25/05/2005

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