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School me because I'm dumb

Discussion in 'The Hokey Ass Message Board' started by C. Montgomery, Mar 5, 2012.

  1. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Is this a thermal or non-thermal fan clutch? I'm having a hell of a time finding the correct one for my chrysler wagon with a 413 in it. There are apparently 3. Two thermal types heavy duty and standard and then a no thermal one. The 4 different thermal ones i have tried do not fit. Too close to the radiator
     

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  2. Jimmy2car
    Joined: Nov 26, 2003
    Posts: 1,707

    Jimmy2car
    Member
    from No. Cal

    The one pictured is a thermal fan, usually used in an air conditioned car. The spring senses temp and makes the fan "engage". Clutch fans have no spring.
     
  3. F&J
    Joined: Apr 5, 2007
    Posts: 13,217

    F&J
    Member

    Thermal has a bi-metallic coil spring on the front, which I "think" I can see in the first pic.

    Non thermal have no spring.

    Normally, where I live, I'd say go with the non thermal as they are sometimes thinner, but you are in Texas, AND a 413, seems like a thermal would be a better choice for extreme heat issues.
     
  4. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Thanks! So I'm not going crazy! All the parts stores here pretty much have the same ones. The thermal ones are all taller (puts it closer to the radiator) than the one that went out. How close is too close to the radiator?
     

  5. squirrel
    Joined: Sep 23, 2004
    Posts: 47,184

    squirrel
    Member

    half an inch would be minimum, an inch would be better....the engine moves around.
     
  6. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Thats what I was thinking. But the ones I can get around here are more like 1/4-3/8" away. Don't know. Im at a loss.
     
  7. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Anybody have any ideas on finding the correct one? I want to drive my freaking car!! I can't find one anywhere that is far enough away from the radiator.
     
  8. try don knopp
    37317 Niles Boulevard
    Fremont,CA94536-(510) 792-4390
     
  9. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Thanks. I'll try him. I'm getting frustrated over this. I don't know what to do. All the parts stores say what I bought is the correct one, but it isnt. Seriously considering doing away with the clutch altogether.
     
  10. squirrel
    Joined: Sep 23, 2004
    Posts: 47,184

    squirrel
    Member

    I found a dimension list of them when I was looking for a long one to clear my blower drive, but that was about 15 years ago. See if you can find a parts store that has a book you can look at.

    It's possible that they don't make many different sizes any more, because new cars have that electric fan crap on them.
     
  11. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    Thanks. I'll try that. Pretty much everyone has a computer with pictures and thats it.
     
  12. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    it appears I found one that may fit. now to find a parts store that has one. Squirrel- the Hayden website has thier whole catalog with all dimensions online gives length, depth, diameter and fan bolt circle size. it appears one off a 1990 jag will fit. shortest one available.
     
  13. squirrel
    Joined: Sep 23, 2004
    Posts: 47,184

    squirrel
    Member

    If it's an old number, look on ebay for it, there are lots of new old stock replacement parts there.
     
  14. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    i'm just impatient, everyone can have one tomorrow, but that's not soon enough dammit! :rolleyes:
     
  15. Digging a hole in the fins is too close, I have run them ( MOPAR Thermal) with just enough room to get my finger between there, buit an inch to an inch and a half is where I would prefer mine to be.
     
  16. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

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