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Center hole for fan

Discussion in 'Early CJ5 and CJ6 Tech' started by jollyjeepers, Jul 22, 2011.

  1. Jul 22, 2011
    jollyjeepers

    jollyjeepers Member

    Roanoke, VA
    Joined:
    Aug 11, 2003
    Messages:
    207
    Have you seen any differences in the center hole for fans? I always thought fans were all the same. My late husband had the fan (as well as other things) on his Tuxedo Park chromed. The chrome was not as good of quality as other parts he had done and was getting pitted. We bought another chrome fan on eBay some years back. When the person that's helping me tried to install it, the center hole was too small. Could it be for some other vehicle and someone sold it as this or would there be any differences? Would there be a difference between L-head and F-head. I've already discovered that carbs are different.
     
  2. Jul 23, 2011
    duffer

    duffer Rodent Power 2019 Sponsor

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    2,735
    Not sure about fan differences on the 134's-thought they were all the same. I know Chevy's can be either 5/8 or 3/4. Will check the L and F heads down in the shop today.
     
  3. Jul 23, 2011
    LarryD

    LarryD Member

    Gallup NM/ 4 Corners
    Joined:
    Jul 7, 2006
    Messages:
    637
    Is it close ? Might be just a buildup of crome or powercoat reducing the diaameter of the hole just enough to cause a problem.
     
  4. Jul 24, 2011
    duffer

    duffer Rodent Power 2019 Sponsor

    Bozeman, MT
    Joined:
    Sep 17, 2009
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    2,735
    Beth, the same pump will bolt to both blocks and both are 0.625" shaft. Only difference is F head pump has an extra port for the line to the head.
     
  5. Jul 24, 2011
    jollyjeepers

    jollyjeepers Member

    Roanoke, VA
    Joined:
    Aug 11, 2003
    Messages:
    207
    Well, it couldn't be put on at all. Maybe we bought on eBay for a 134 and the seller was wrong. Can't imagine why. But then I was also shocked that the Solex carb wouldn't fit either. I'm starting to wonder about all the parts I've shelved. Thanks for the info.
     
  6. Jul 25, 2011
    Stout

    Stout Member

    Quakertown, PA
    Joined:
    Nov 1, 2010
    Messages:
    958
    Post a picture of the fan and the carb. If it is a Willys Jeep fan it should fit, I agree with LarryD that it is probably a buildup of chrome making the hole smaller.
     
  7. Jul 25, 2011
    timgr

    timgr Eppur si muove. 2020 Sponsor 2019 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    21,432
    It would be worthwhile to measure the hub and fan hole to see whether you're in the range of the plating thickness. The digital calipers from Harbor Freight are great for jobs like this - the batteries that come with them seem to poop out right away, but you can buy a blister pack of 10 through Amazon for a few dollars. If you're missing by a few thou, I'd just clean up the hub with some emery cloth and lightly grind the plating out of the fan hole.
     
    Last edited: Jul 25, 2011
  8. Jul 25, 2011
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    +1
     
  9. Jul 26, 2011
    jollyjeepers

    jollyjeepers Member

    Roanoke, VA
    Joined:
    Aug 11, 2003
    Messages:
    207
    I have one of those digital calipers that I bought to use on kart pistons. I'll check it out and post my findings here. I don't have the Jeep here to check it. I'll post pics. Will probably be the weekend. I'm really booked up this week.

    Thanks!
     

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