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Technical 49 Chevy Truck Temperature sender question

Discussion in 'The Hokey Ass Message Board' started by rodknocker, Apr 17, 2014.

  1. rodknocker
    Joined: Jan 31, 2006
    Posts: 2,267

    rodknocker

    My current project is a 49 Chevy 3100. I have verified that the temperature gauge, and lead works, and want to keep the original gauges. With the engine transplant the lead now comes up short by about 1'. Is there a way to lengthen the copper lead?, I've asked some local guys, and have recieved mixed answers, one saying there is a gas inside the lead so it can't be cut. Any help would be appreciated.
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 43,696

    squirrel
    Member

    Search, you should be able to find a thread here explaining how to do it. There is indeed a substance inside the tube, and when you cut it, it all leaks out. The plan is to get a new mechanical gauge, cut off it's longer tube, and solder it onto the old gauge, and not let the substance escape. I've never done it...it sounds fun.
     
  3. T Weed
    Joined: Dec 5, 2004
    Posts: 100

    T Weed

    You can also just order a new gauge from The Truck Shop, I just replaced my temp, oil and gas gauges. They work good as the capillary tube for temp is longer, the oil goes up to 60 lbs and the gas gauge is 12 volt. The gas gauge needle was a little longer and requires a slight mod on the back of the besel and all was good to go.
     
  4. Nubomb
    Joined: Jul 4, 2009
    Posts: 9

    Nubomb
    Member

    On my AD with a small block chevy, I drilled the back of the left head to accept the sender. It has worked for 35 years!
     
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  5. squirrel
    Joined: Sep 23, 2004
    Posts: 43,696

    squirrel
    Member

    aw, what fun is that? :rolleyes:
     
  6. Mr48chev
    Joined: Dec 28, 2007
    Posts: 25,652

    Mr48chev
    ALLIANCE MEMBER

    That would be your best bet. the pressure on the stock gauge doesn't go high enough for the later model engine in most cases anyhow.

    The other thing might be to buy and aftermarket gauge with a face and dial the right size to modify to fit in your gauge housing. It would take a bit of work but it wouldn't be too spendy.
     
  7. saltflats
    Joined: Aug 14, 2007
    Posts: 9,561

    saltflats
    Member
    from Missouri

    The truck I built for a guy we installed a vintage air and heater unit and I made a fitting under the dash for the sending unit to go in the heater hose before the heater control valve and it worked good.
     
  8. rodknocker
    Joined: Jan 31, 2006
    Posts: 2,267

    rodknocker

    Nubomb, by chance do you have a picture of this? The heater tube sounds like a good option too. Thanks guys
     
  9. rodknocker
    Joined: Jan 31, 2006
    Posts: 2,267

    rodknocker

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