In a message dated 6/27/2001 9:08:12 PM Eastern Daylight Time, DANMAS writes:
> In a message dated 6/27/2001 5:20:10 AM Eastern Daylight Time,
> jimray@alltel.net writes:
>
>
>
>
>
> >> I am planning to replace my gauges with VDO Series 1 gauges and need to
>> know
>> which sending unit to use with my fuel tank. I don't want to change the
>> fuel level unit and need to match the sending unit with the level
>> indicator.
>> Does anyone have the ohms reading a empty and full. This is necessary to
>>
>
>
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>
> Jim,
>
> I don't know about the MGB, but I just added Autometer gauges to my TR6. I
> had to add a 15 ohm resistor in series with the sender, and a 1000 ohm
> resistor in parallel with that to get the gauge to read properly at the
> ends of the scale.
>
> However (and there's always a "however," isn't there?), you will still have
> a problem with your gauge. The MG and Triumph gauges a thermal devices,
> while the VDO and Autometer gauges are of the "dual coil" type. The stock
> sender is designed with a built in non-linearity to match the stock gauges.
> This non-linearity will cause problems with the VDO gauge. On my car, the
> gauge reads correctly at full and empty, but I only have about 3-4 gallons
> left in a 12.5 gallon tank when the gauge reads 1/2.
>
> There is an easy fix for this, though. Just remove your stock sending unit,
> grind off the rivet holding the sender to the mounting plate, and discard
> the sender. Remove the sender from the VDO mounting plate. Drill holes in
> your stock mounting plate to match the VDO sendor (and wirinf), and bolt
> the new sender in place. The VDO sender is designed to be mounted from the
> top, whereas the MGB sender is mounted from the side, so you may have to
> modify the bracket that holds the actual sending unit to the mounting plate
> to make it work. It may be possible to just bend the float arm to do the
> same thing, but I haven't tried it to say for sure. I have photos of the
> modification on my car I can send you if you want.
>
> Dan Masters
> Alcoa, Tennessee
>
> Triumph TR 250 - TR6 Electrical Maintenance Handbook:
> http://members.aol.com/danmas6/
> Stuffing a V8 into a small British sports car:
> http://members.aol.com/danmas/
> British V8 Newsletter:
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