Testarossa Radiator and Oil Coolers Fans | Page 3 | FerrariChat
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Testarossa Radiator and Oil Coolers Fans

Discussion in 'Boxers/TR/M' started by uzz32soarer, Nov 13, 2008.

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  1. uzz32soarer

    uzz32soarer F1 Rookie

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    #51 uzz32soarer, Apr 15, 2009
  2. JAYF

    JAYF Formula 3

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    #52 JAYF, Apr 16, 2009
    Do these fans use put less strain on the electrical system? Can we source the proper plug so that they will snap into the wiring harness?
     
  3. uzz32soarer

    uzz32soarer F1 Rookie

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    #53 uzz32soarer, Apr 16, 2009
    I'm currently drawing 17 and 18 amps respectively off my fans. The curcuit is way overloaded. They should be at around 12 amps.

    These new fans may reduce that even further thanks to a more modern design in the motor.
     
  4. uzz32soarer

    uzz32soarer F1 Rookie

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    #54 uzz32soarer, Apr 16, 2009
    Last edited by a moderator: Sep 7, 2017
    Here is the expected current draw from the new SPAL fans.

    We need someone more clever than I to explain what the static pressure means. I think it means the thickness of the air, like as in humidity, but I'm not sure. You can see that at full 1390 cfm and 0 static pressure, these fans draw 12.5 amps.
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  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    #55 Steve Magnusson, Apr 16, 2009
    "Static pressure" is the pressure difference between the inlet and outlet sides of the fan (and in this application of sucking air thru a fairly thin radiator, the inlet and outlet sides are virtually both at the atmospheric pressure so the static pressure is ~0). If you completely blocked off the outlet side of the fan (so the airflow was 0 cfm), the pressure on the outlet side would be 1.4 inches H20 higher than the inlet side, but the fan motor would be running a little slower (at the same voltage input) so it draws more current (the motor generates less back emf at the slower speed). Same things happens on your vacuum cleaner if you block the inlet hose -- you get the maximum vacuum level (because the airflow is 0 cfm), but you can hear the fan motor slow down.

    That 12.5A value at 1390 cfm and 0 static pressure matches my earlier measurements very well so it looks like it's a good equivalent item -- however, something must be wrong with your fan motors ;)
     
  6. uzz32soarer

    uzz32soarer F1 Rookie

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    #56 uzz32soarer, Apr 16, 2009
    There you go, I knew it wouldn't take long for someone more clever than me to turn up!
     
  7. uzz32soarer

    uzz32soarer F1 Rookie

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    #57 uzz32soarer, Apr 16, 2009
    Yeah, I might pull out my left one (easy) and rip it apart for a checkup. Even though they both seem to work fine, they definately drag way too much current.

    The old girl will be off the road for a few weeks soon as Winter is approaching and I have to do a clutch anyways.
     
  8. Shamile

    Shamile F1 Veteran

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    #58 Shamile, Apr 16, 2009
    Dear Ferraristi,

    Yeah....suffered the white connector meltdown as well. That numbered plug was relatively new....replaced by Shelton Ferrari.....note the crappy way they redid the wires. If I had known, I would have done it myself.

    Well after a while of daily driving.....burns again. This time I removed the white plugs completely. I replaced them with individual numbered wires with gold plated high=end audio spades directly on the male spades on the box. This was very time consuming and now the box is more cumbersome to dissassamble...but solid connections and no melting.

    If you look inside the white plug to see how thin and small the metal connectors are....you'd be shocked.


    Shamile

    Freeze...Miami Vice !
     
  9. testamon

    testamon Formula Junior

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    #59 testamon, Apr 22, 2009
    Rob, Still do not have my car back on the road but hopefully soon. Measured the Spal original fan versus the replacement and the measurements are allmost the same but is 5mm deeper ie total depth for original is 90mm as opposed to 95mm for new ones. This should make no difference as at least 5mm spare. All mounting holes should line up exactly.
     
  10. leslie_choo

    leslie_choo Formula Junior

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    #60 leslie_choo, May 10, 2017

    hi all, I have consolidated Spal fans product for the Radiator (30102054) and Oil cooler fan (30100291). May i know does the oil cooler fan Spal 30100291 fit into the A/C condenser fan at the front wheel ? so that i can order 3 instead of 2 of these fans. thanks in advance
     
  11. Melvok

    Melvok F1 World Champ
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    #61 Melvok, May 10, 2017
    Good to revive this thread Leslie !

    Maybe you should "wake up" Robert with a PM ... he may never know you asked him today ... :)
     
  12. leslie_choo

    leslie_choo Formula Junior

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    #62 leslie_choo, May 10, 2017
    Last edited: May 10, 2017


    Thanks Mel ! I did and waiting for his response now :). I just changed the alternator to 120A but it doesn't help much as the car still draws huge current when the fans are on so I decided to change all the fans :)


    Sent from my iPhone using Tapatalk
     
  13. uzz32soarer

    uzz32soarer F1 Rookie

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    #63 uzz32soarer, May 10, 2017
    I think that the AC fan in front of the left front wheel is a different size fan to the oil coolers.
     
  14. 302Tim

    302Tim Formula 3

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    #64 302Tim, May 10, 2017
    Last edited by a moderator: Sep 7, 2017
    There are differences in all three fan motors; case configuration, size, construction, I think connector clocking, etc. Unfortunately I didn't take any measurements when I restored all my motors. The AC and oil fans are a two-brush configuration whereas the water fan motors have four brushes.

    For reference my AC fan motor has the SPAL marking "VA03-A23/A 12A 12V" whereas the water fans are labeled as "12 volts VA03-AP6-37A". The oil fans had SPAL labels but no identifying PN annotated (maybe since you can't buy just the oil fan motors, only the assembly (cage and fan blade) whereas you can/could buy the oil and AC fan motors separately.

    The first 2 photos are A/C fan, next two are water, and last two are oil.
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  15. Melvok

    Melvok F1 World Champ
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    #65 Melvok, May 11, 2017
    Thanx Tim ! Very good info ! :D
     
  16. leslie_choo

    leslie_choo Formula Junior

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    #66 leslie_choo, Jul 9, 2017
    Last edited: Jul 9, 2017
    Today I have changed my oil cooler fans and radiator fans .

    [​IMG]

    [​IMG]

    The new radiator fans are more efficient and less noisy . The Amp drawn seems to be not much different to the original fans motor . I cannot test the oil cooler fans as it has not reached the temp to turn on the fans.



    As for the A/c evaporator fan - here is the finding . It's exact same size as radiator fans. As for the power and amp difference between the A/c evaporator fan motor and radiator fan motor , that I don't have the info .

    [​IMG]

    [​IMG]


    Maybe for A/c evaporator fan a low profile 11" fan will work ? 30100364 ?
    [​IMG]




    Sent from my iPhone using Tapatalk
     
  17. turbo-joe

    turbo-joe F1 Veteran

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    #67 turbo-joe, Jul 9, 2017

    you may jump the thermo switch at the housing of the oil cooler
     
  18. Melvok

    Melvok F1 World Champ
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    #68 Melvok, Jul 19, 2017
    Last edited by a moderator: Sep 7, 2017
  19. alex_kay

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    #69 alex_kay, Jul 16, 2025
  20. 2dinos

    2dinos F1 Rookie

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    #70 2dinos, Aug 9, 2025
    In all of the searching, anyone come across brushes for the fan motors? I know they are 7.1 x 7.1mm square by approximately 20mm ? when new.

    1/4" are available by the bag of 100 for 10 bucks, but of course these are not 1/4".
     
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