Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: Cant get the motor to stay hot. HELP!
          
   
   

Reply To Thread
Results 1 to 9 of 9
  1. #1
    K9 48 Chevy's Avatar
    K9 48 Chevy is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2005
    Location
    Travis AFB
    Car Year, Make, Model: 1940 ford coupe delux
    Posts
    37

    Cant get the motor to stay hot. HELP!

     



    I have a 40 ford coupe with a 350 and a aluminum radiator with AC/Heat combo. In the summer I had a slight over heating issue so I removed the mechanical fan and replaced it with a Walker electric fan and it stoped over heating. Now that its cooler outside (northern California) I cant get the dang motor to stay warm. When the car idels for a few min it will get up to 190-200but as soon as I take off down the road, the motor cools off to about 170 and I cant get any heat in the car. Any suggestions besides changing the thermostat ? My only guess is the thermostat is getting stuck open. I really need some help on this as I take the kids in the car and drive it everyday. Thanks a ton for any suggestions. I'm also looking for an old parking brake handle that mounts on the kick pannel. Maybe from a 45-48 chevy or any old hand parking brake would do.

  2. #2
    REM
    REM is offline CHR Member Visit my Photo Gallery
    Join Date
    Dec 2008
    Location
    N.W.-
    Posts
    20

    I would say it is definitely a thermostat problem.
    With a proper working thermostat the engine should stay up to temp regardless of the fan ot rad.
    Not one shred of evidence supports the notion that life is serious.

  3. #3
    Mike52's Avatar
    Mike52 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jul 2008
    Location
    Tampa Bay area
    Car Year, Make, Model: 32 Ford 3w Hi-Boy Project
    Posts
    851

    Take the thermostat out and check it in a pan of water on the kitchen stove, bring the water to a boil and you can see if it opens and closes properly when it cools down.

    Mike

  4. #4
    34_40's Avatar
    34_40 is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    New Bedford
    Car Year, Make, Model: 34 Ford 3W Coupe Replica
    Posts
    14,717

    Quote Originally Posted by K9 48 Chevy View Post
    I have a 40 ford coupe with a 350 and a aluminum radiator with AC/Heat combo. In the summer I had a slight over heating issue so I removed the mechanical fan and replaced it with a Walker electric fan and it stoped over heating. Now that its cooler outside (northern California) I cant get the dang motor to stay warm. When the car idels for a few min it will get up to 190-200but as soon as I take off down the road, the motor cools off to about 170 and I cant get any heat in the car. Any suggestions besides changing the thermostat ? My only guess is the thermostat is getting stuck open. I really need some help on this as I take the kids in the car and drive it everyday. Thanks a ton for any suggestions. .
    I had this same issue with my daily driver, an explorer. I tried about 4 different thermostats. I finally discovered that the "high performance" one is known as a sleeve type and the regular type is a poppet style. I got a Mr.Gasket sleeve type and it made all the difference in the world, the "inexpensive" robertshaw brands are all poppet style and they are either open or closed, the sleeve type will modulate itself and it will also outflow a poppet style at wide open. See if you can locate one at summit or your local auto parts supplier, it will be more expensive but it's worth every penny.

  5. #5
    dmw56's Avatar
    dmw56 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jul 2008
    Location
    Edgewood, New Mexico, United States
    Car Year, Make, Model: 30,34,39,50,54,65,68,70,71,72
    Posts
    571

    Put some cardboard, vinyl, or something to block the airflow through the radiator. Or buy one of those vintage grille louvers for a couple of $$grand.
    Livin' on Route 66

  6. #6
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Sounds to me like you are just tired of working on it... else you don't want to do anything which could (possibly) reanimate the overheating issue.

    Two suggestions:

    put the fan on a thermal relay switch. ( if not already )

    block at least half the radiator with a piece of cardboard.
    ( don't forget it when it warms up )
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  7. #7
    Itoldyouso's Avatar
    Itoldyouso is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2006
    Location
    fort myers
    Car Year, Make, Model: '27 ford/'39 dodge/ '23 t
    Posts
    11,033

    For the winter months I would go to a 192 degree thermostat then switch it out to a maybe 160 when the warmer months come. It is really strange to hear of a '40 Ford that runs TOO COOL, generally these cars have a problem with airflow because of the design of the front end and the engine room trapping air. Says a lot about the efficiency of your aluminum radiator.

    Don

    PS: Here is a hand brake on Ebay right now that sounds like what you are looking for.

    http://cgi.ebay.com/ebaymotors/Flath...Q5fAccessories
    Last edited by Itoldyouso; 01-01-2009 at 05:47 PM.

  8. #8
    K9 48 Chevy's Avatar
    K9 48 Chevy is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2005
    Location
    Travis AFB
    Car Year, Make, Model: 1940 ford coupe delux
    Posts
    37

    Smile Problem solved

     



    Thanks for all the advice. I have owned this thing for a year so far, I did teh card board in front of the radiator and it still wouldnt get hot so I finally broke down and got a 195 thermostat and replaced it however, there wasnt a thermostat in teh F*&^%ng thing to begine with. I cant believe some people when they build a car. I use to race stock cars and we use to remove the thermostat to keep water flowing due to we could only use water and no coolent. I suppose it was cheaper for teh guy to remove the thermostat then get an effective fan. WHen I giot the car it had a mechanical fan on the back and a electric spal fan on the front. I quickly removed the mess and put teh walker fan on and had no issues till it was cold outside. Anyway, than you all for the info. The kids werent complaining today when we went to the video store. As a matter of fact, they were saying it was hot inside. Now it rides at 200 and no issues. Thanks again. I love this site.

  9. #9
    allen is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2004
    Location
    citrus heights
    Car Year, Make, Model: 32 Ford Hi Boy
    Posts
    59

    An operating temp. of 170 degrees should be plenty hot enough to get heat out of the heater unless there is something wrong with the heater. Check the heater control valve that is in the hose that runs from the intake manifold to the heater for proper operation. If it won't open it won't allow the hot water to circulate though the heater. If the valve is vacuum operated check the vacuum solenoid. My 40 Ford pickup with an aluminum radiator and a 160 degree thermostat would never get hot enough in the winter to get any heat out of the heater. As soon as the thermostat opened the temp would drop like a hot rock. I switched to a 180 thermostat and then it worked fine. In the summer that truck would run at 180 to 185 all day long with the AC on. Griffen aluminum radiator with 1 1/4 tubes, Walker fan shroud and a 17" steel blade mechanical fan.

    Allen

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink