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Cold Flatty?

Discussion in 'The Hokey Ass Message Board' started by Defisch, Feb 17, 2009.

  1. Defisch
    Joined: Nov 1, 2007
    Posts: 181

    Defisch
    Member
    from Hudson FL.

    I drove my hot rod around today(48' 59a in a model a) 70 or80 miles and at 75 degrees out it only reaches 150 degrees at 60 mph when i stop it goes to around 140. i checked my guage with one stuck in the radiator and its within a few degrees. what can i do to get the temp. up? do they make thermostats that go inside the rad hoses? or ive heard of running restricters with a 5/8 hole will this help?
     
  2. ardunpinto
    Joined: Dec 12, 2007
    Posts: 173

    ardunpinto
    Member
    from WACO tx

    Yes you can get thermostats, try one of the early ford suppliers.
     
  3. Crusty Nut
    Joined: Aug 3, 2005
    Posts: 1,834

    Crusty Nut
    Member

    It's a great problem to have. Mine is similar. They do make thermostats that go in the hoses. Washers will work too. If you need to, try putting some cardboard in from of half the radiator.
     
  4. ardunpinto
    Joined: Dec 12, 2007
    Posts: 173

    ardunpinto
    Member
    from WACO tx

    the restrictors will only keep it cooler the water does not move as fast and has time to cool even more in the rad.
     

  5. plym_46
    Joined: Sep 8, 2005
    Posts: 4,018

    plym_46
    Member
    from central NY

    Its the old do you get wetter walking through rain or running through rain question.

    Partially resricting air flow or covering part of the rad will have more effect on the temp.
     
  6. Flat Broke
    Joined: Nov 1, 2004
    Posts: 109

    Flat Broke
    Member

    I had a similar issue with my flat six in my 50 Ford truck. It would just sit at 150 degrees, and never get any hotter. As we all know, a cold flatty is better than a hot one, but it is ideal to reach operating temp! After wasting hours troubleshooting guages, and temp sending units, I replace the thermostat. The old one was opening too soon, obviousely a colder t-stat. Got the right one from an early flathead supplier like suggested. Hopefully your resolution is as simple as minewas.
     
  7. flatjack
    Joined: Feb 13, 2007
    Posts: 948

    flatjack
    Member

    You need thermostats.
     
  8. Defisch
    Joined: Nov 1, 2007
    Posts: 181

    Defisch
    Member
    from Hudson FL.

    Thanks Guys ill pick up a set of thermostats tomorrow.
     

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