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+--- Thread: Petrol tank sender unit float... (/showthread.php?tid=4202)
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Petrol tank sender unit float... - Ruairidh Dunford - 16-04-2020
Does a modern replacement exist for the sender unit please? I have seen similar rubber floats for SU carbs but wonder if a modern replacement exists, other than a big cork?
RE: Petrol tank sender unit float... - "Slack Alice" Simon - 16-04-2020
Float from an A7 carb, soldered on?
RE: Petrol tank sender unit float... - Mike Costigan - 16-04-2020
Apart from being 12 volt, I believe the Sprite/Midget sender unit is identical ... probably Morris Minor, too. Presumably some modern electronic trickery can deal with the voltage difference.
RE: Petrol tank sender unit float... - Ruairidh Dunford - 16-04-2020
My question was not clear - I am looking for a modern replacement float for the sender unit please.
RE: Petrol tank sender unit float... - Pearls not a Singer - 16-04-2020
Available at https://www.holden.co.uk/c/hardware/gauges/fuel_tank_senders
[url=https://www.holden.co.uk/c/hardware/gauges/fuel_tank_senders][/url]
I'm not sure when they started to use nylon floats but when I resurrected my gauge in 1985 I used one from a scrap maxi
RE: Petrol tank sender unit float... - Nick Turley - 16-04-2020
I think this should do the trick :-
https://www.amazon.com/Omix-Ada-17729-01-Fuel-Plastic-Float/dp/B003AOM17I
RE: Petrol tank sender unit float... - Ruairidh Dunford - 16-04-2020
Thank you both - perfect!
RE: Petrol tank sender unit float... - Nick Salmon - 16-04-2020
Ruaridh - the plastic float should do the trick. I recently butchered an MGB sender, which has a similar float
I removed the porous metal float from the A7 unit, and with a bit of heating bent the arm into a circle - into which I pressed the plastic float.
It works a treat but I do know that because the arm is foreshortened an empty reading on the gauge actually means there is a fair bit of fuel in the tank.
RE: Petrol tank sender unit float... - Ruairidh Dunford - 16-04-2020
Good to know - thank you.
I have a plan with regards to the short arm, will let you know if it works.
RE: Petrol tank sender unit float... - David Stepney - 16-04-2020
When I had my tank sender unit out, I found that someone previously had shoved a cork into the skeletal remains of the float. The float finally collapsed into dust as I tried to get the cork out, so I just pushed the cork onto the angled wire where the float had been. Crude but effective. The gauge now works, but does not sink below the 1/4 mark, so when it gets anywhere near there, I add fuel.
But Ruairidh, you will probably want to do the job properly.