Anyone who wants to try to calibrate their gauge by moving the posts on the
back of the gauge should be aware: there is a tab for each post inside the
case that fits in the adjusting slot for the post. If you loosen the nut too
much to move the post, it's possible that the tab will come out of the slot.
When you retighten the nut, you'll spin the post and it will break the coil
wire. The gauge will quickly go from inaccurate to non-functioning.
Steve Byers
HBJ8L/36666
BJ8 Registry
Havelock, NC USA
---- mike brooks <hypercubic@yahoo.co.uk> wrote:
> I rebuilt my BN2 gauge a couple of years ago and found the MGA info very
> useful. However, when calibrating the gauge I did not have much success with
> the resistors. Instead, I removed the sender unit from the tank and connected
> the body of the sender wire with a temporary wire to a suitable ground point
> on the Healey. Of course the sender wire was still connected to the fuel gauge
> through the wiring loom. Then, moving the sender arm from one end to the other
> gives you empty and full. The empty and full readings on the gauge are got by
> adjusting the two screws in the back of the gauge per the MGA instructions.
> "MGA" is correct that the two adjustments interact. The best I could get was
> Full shows Full and Empty shows 1/4. However, once off the Full stop, the
> gauge is fairly consistent. I tend to fill up with petrol when the gauge shows
> just under 1/2 and that gives me a useable range of around 250 miles. BTW the
> gauge was non-functioning when I got the
> car. When I took the gauge apart, one of the coil windings had broken where
> it was soldered onto one of the little posts. I carefully unwound the coil by
> one turn and resoldered, on the basis that one less turn in probably several
> hundred shouldn't make much difference to the reading.
>
> Rgds
>
> Mike Brooks
> Milano
> Italy
>
>
> Message: 9
> Date: Wed, 22 Aug 2007 18:57:03 -0700
> From:
> "BJ8Healeys" <sbyers@ec.rr.com>
> Subject: Re: [Healeys] fuel gage/sending unit
> To: <healeys@autox.team.net>
> Message-ID:
> <NOEFJBPLAINEGFAIHBHKEEEMDFAA.sbyers@ec.rr.com>
> Content-Type: text/plain;
> charset="us-ascii"
>
> The MGA Guru website is still active and has been updated
> since I was there
> last: http://www.mgaguru.com/mgtech/electric/fg_06.htm
> There is a ton of good information there, including how to calibrate your
> fuel
> gauge. I don't know if anyone was ever able to get their gauge
> calibrated
> properly following the instructions, but not me.
> _______________________________________________
> sbyers@ec.rr.com
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
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