MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Fuel Sending unit
Posted by: pspeaks
Date: September 09, 2012 05:43PM

I was just pondering my electrical schematic and the following question popped into my head. I’m using an MGB fuel tank with a MGB fuel quantity sending unit, but I have a Dolphin gauge (shark, without the fish logo). I’m concerned that the sending unit resistance and the gauge won’t match. Is that going to be a problem, and if so, is there a device to put in line so the gauge will be accurate?



Edited 1 time(s). Last edit at 09/09/2012 07:25PM by pspeaks.


DC Townsend
David Townsend
Vermont
(406 posts)

Registered:
11/21/2007 12:22PM

Main British Car:
'78 B (almost done) 30-over SBF, dry sump

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Re: Fuel Sending unit
Posted by: DC Townsend
Date: September 09, 2012 08:28PM

Same problem (different gauge maker though). I disassembled the MGB sender, did the same to the sender that matched the gauge, reassembled the B unit using the resistor from the gauge sender. My second time doing it this way. Was the same on the Cobra replica I had. That one used Dolphin gauges. Nice product BTW.

Both times, works just fine.


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:
Re: Fuel Sending unit
Posted by: burner1
Date: September 09, 2012 09:11PM

I just cut another plate which bolted to the new sender and bolted to the MGB tnak hole.
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pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Fuel Sending unit
Posted by: pspeaks
Date: September 10, 2012 10:36AM

Thanks guys, looks like I do have to do something, so now I guess I have to decide which way I want to go. Either way it doesn’t seem too difficult. The gauge on the t-bucket I had never worked worth a darn so I used a stick on it every time I passed a gas station; not so practicle on my GT

Paul



Edited 3 time(s). Last edit at 09/10/2012 10:42AM by pspeaks.


britcars
Phil Ossinger
New Brunswick, Canada
(346 posts)

Registered:
02/02/2009 07:58PM

Main British Car:
1977 MGB Roadster, Rover 3.5 ADVENTURE BEFORE DEMENTIA!

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Re: Fuel Sending unit
Posted by: britcars
Date: September 10, 2012 10:10PM

Paul, I did something similar to what Dave T. did with his fuel gauge. I too used the Dolphin/Shark gauges and the tank sending unit that came with the gauges.. Photo attached.
Fuel Sender.1 (600 x 450).jpg


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Fuel Sending unit
Posted by: pspeaks
Date: September 11, 2012 03:04PM

Great idea Phil, I might just try that. In fact I'm going to put a new tank from Moss on the GT and center it with all new hardware. Thanks a lot, knowing you guys have done it with success makes me feel a lot better.



Paul


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