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Fan to radiator clearance???

Discussion in 'The Hokey Ass Message Board' started by C. Montgomery, Feb 25, 2005.

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

    C. Montgomery
    Member

    I've always thought that the closer to the radiator the better. But, how close is too close? I put a 302 in my 49 ford, and spaced the radiator forward an inch like the kit said, but it's still within an inch or so from the front of the fan to the radiator..Too close?
     
  2. 50dodge4x4
    Joined: Aug 7, 2004
    Posts: 3,535

    50dodge4x4
    Member

    They used to say mim 3/4" clearance. Don't know who "they" was, or if that still holds true, but its what I use. Gene
     
  3. i was always told no more than an inch without a shroud.
     
  4. C. Montgomery
    Joined: Dec 18, 2003
    Posts: 1,010

    C. Montgomery
    Member

    cool. sounds like I'm ok then....
     

  5. fab32
    Joined: May 14, 2002
    Posts: 13,985

    fab32
    Member Emeritus

    3/4" is usually sufficient, but 1/2" can be too close if there is any flex in the fan or the engine moves in the mounts at all. there is nothing that will replace a well designed and well built shroud. The fan can be back from the core it you use a good shroud. By good shroud I mean one that flares out from the fan to include most of the core area and the fan is at least 1/2 the pitch of the fan into the shroud.
    Another tip is to check on getting a fan blade for an air conditioned application. these blades usually have 1 or2 extra blades and the pitch is greater than a standard fan.

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

    C. Montgomery
    Member

    Thanks for all the help!!!
     

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