308 GT4 radiator fans... a question | FerrariChat
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308 GT4 radiator fans... a question

Discussion in '308/328' started by Serg, Jun 19, 2006.

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  1. Serg

    Serg Karting

    Jun 18, 2006
    104
    Los Gatos, CA
    #1 Serg, Jun 19, 2006
    So... I managed to figure out that the left hand side radiator fan terminal on my fuse block on my '75 GT4 was roasted.. I moved the terminal to the right hand terminal and now I have a working horn, clock and right radiator fan...

    Here is my question.... do both fans come on at the same time or is it one, and then the other if both are needed? What is normal operating temp for these cars, water temp that is??


    Serg
     
  2. Serg

    Serg Karting

    Jun 18, 2006
    104
    Los Gatos, CA
    #2 Serg, Jun 21, 2006
    Somebody??? Please......
     
  3. dell550

    dell550 Karting

    Aug 24, 2005
    209
    London
    Full Name:
    george c
    #3 dell550, Jun 21, 2006
    Both fans will come on at the same time and should maintain the engine temperature at the mid-way point on the guage
     
  4. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    #4 Birdman, Jun 21, 2006
    Hi Serg,
    The thermostatic switch in the radiator turns on at 190 F and that activates both fans. The AC switch on your console automatically activates one fan when you turn it on, regardless of engine temp. So if you start the car up stone cold and activate the AC, one fan comes on. (I am not sure which one on a GT4). Once the engine hits operating temp, the other fan comes on as well. If the AC is off, neither fan comes on until the radiator hits 190, then they both come on.

    Be sure the foam on the hood above the radiator is in good shape so that the fans push air through the radiator and not over it. Makes a big difference in cooling effectiveness.

    Birdman
     
  5. Serg

    Serg Karting

    Jun 18, 2006
    104
    Los Gatos, CA
    #5 Serg, Jun 21, 2006
    Thanks!
     
  6. dinogt4guy

    dinogt4guy F1 Rookie

    Oct 31, 2004
    3,411
    Hewitt, Tx.
    Full Name:
    Kurtis Fordice
    #6 dinogt4guy, Jun 21, 2006
    Foam on the hood!?! I've never noticed that on mine. I'll have to look into that. I've never really had a cooling problem, sometimes a little warm, but it never really gets that hot here that often anyway.

    Cheers!

    DT
    _______________________________________

    There is nothing like a Ferrari, there never has been and never will be!
     
  7. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    #7 Birdman, Jun 21, 2006
    Dino,
    Actually I must admit that this is advice for the GTB/GTS so maybe I'm wrong for the GT4. But the GTB/GTS has a strip of foam on the hood that blocks the path of air over the radiator when the hood is closed. MANY cars are missing this little strip of foam because it gets old and brittle and decomposes. Next thing you know, the car is running hot, but the fans are fine. People start talking about inadequate cooling systems, replacement radiators, etc. when all it needs is the foam put back so the air will be forced to go through the radiator rather than around it. The GT4 probably has the same deal, but I'm no expert on GT4 mechanicals.

    Birdman
     
  8. Perfusion

    Perfusion F1 Rookie

    Oct 16, 2004
    4,151
    Marietta, GA
    Full Name:
    Aaron
    #8 Perfusion, Jun 21, 2006
    Indeed it does, and that's excellent advice, Birdman!
     
  9. RJay

    RJay Formula Junior

    Jun 26, 2004
    261
    Colorado
    Full Name:
    Bob
    #9 RJay, Jun 21, 2006

    Birdman,

    Given the cost/benefit on this one, I am going to do it right away. Thanks for the tip!

    Rjay
     
  10. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    #10 Birdman, Jun 22, 2006
    I got some replacement foam for mine at the local hardware store. They sell little kits of foam for around household AC units for a couple bucks. Then you can use some spray adhesive on the foam to stick it where it goes.

    I immediately noticed a difference in the operating temps in hot weather.

    Birdman
     

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