What to do for a gas sending unit

[Heavy Duty]

I too have no idea how much gasoline I have in my 38 Ford. Does anyone have a solution for junk senders? What do you do? Does anyone have an idea how a person might buy new parts and put a gas gauge under dash?

[JSeery]

Several ways to go (depending on where you want to end up!).

1. Try to locate a NOS sender.

2. Install a resistance type modern sender and learn to live with it.

3. Install a new matched set of resistance type gauge and sender. Here is an example of a 2 1/16 inch gauge. Now these are mostly 12v setups! 6v may be a little more completed to fined.

[JSeery]

Here is a 6v pos ground gauge. https://www.steinertractor.com/JDS19...olt-fuel-gauge can't see where they list the size.

[TJ]

The late senders that use a modern gauge will not fit your tank unless you have an adapter.

[JSeery]

The sender needs to match the ohms requirements of the gauge. You should be able to find a sender of the correct ohms that will fit about any tank you would be using. The mounting hole pattern may need to be re-drilled, not sure. One of the gauges I posted earlier if for a John Deere tractor.

[corvette8n]

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Originally Posted by JSeery

Here is a 6v pos ground gauge. https://www.steinertractor.com/JDS19...olt-fuel-gauge can't see where they list the size.

The JD sender that they list for this gauge is 0-30 ohms. I think the guage is 2" dia.

[JSeery]

Yes, it is 0-30 ohm. Found what I think is a cool looking guage! However, it is 12v neg ground.

"Available in 0-90 ohm (GM mid 60's to mid 90's), 0-30 ohm (early GM), 73-10 ohm (pre 90's Ford and Chrysler), 16-158 ohm (later model Fords) and 240-33 ohm (aftermarket senders such as the Auto Meter 3262). Our patented air core meter movement receives extra dampening to help combat the effects fuel slosh in non-baffled tanks."

Again, unless you are attempting to match an existing resistance sender in a car, any gauge/sender combination will work as long as they match.

[rich b]

I would bet there no modern senders that are large enough to fit the stock Ford opening.

Easy to fabricate (or buy, if they are still available) an adapter; but last one I did I found it even easier to just make a larger plate for the new sender and switch the mechanism over. Didn't get a picture of that one; but here's an adapter plate I made for the VDO sender in my '47.

You could also hide the gauge in the glove box, if you remember to check it.

[adileo]

My 39 (org sender) the cork was saturated. Are you sure it's not the cork?

[Heavy Duty]

Good advise. I will work with the information you gave me. Thanks a lot.

[Heavy Duty]

Rich B.
What kind of sender is that and where does it come from? Am i correct in assuming any sending unit that goes from 0 to 30 ohms will work with a 38 gauge? Bob Drake shows two types of senders. One is the junk type the other a more expensive one Does anyone have any knowledge how they operate?

[Heavy Duty]

Adileo No it is not cork it is metal.

[VeryTangled]

Originally Posted by adileo

My 39 (org sender) the cork was saturated. Are you sure it's not the cork?

The only good the new units was... It donated its float where my existing hollow brass bulb had holes.

[Heavy Duty]

JSEERY andCORVETTE8N I called Steiner Tractor in Lennon MI. and saw a sending unit part number JDS1712 works on 6 or 12 volt pos and neg ground calibrated to 0-30 ohms. Talked to a teck. He said they have had good luck with them sold over 6,000 only a few did not work due to mistaken hookup. Has a 3" plate with 5 holes. Got to check this out more. Will advise Later.

[JSeery]

Good feedback. Sounds like a gauge/sender combo that would work in a lot of applications.

[twostickmutt]

Not to hijack this post but does someone have the approximate location (going thru the trunk floor ) of the sender location in the tank on a '39 standard tudor i've read where there was a trap door for access but my floor was patched at one point and the trap door is long gone. i thought maybe i could put a door back in while checking my sender. might be easier than dropping the tank. thanks for any advice.