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Cj2a Defroster??

Discussion in 'Flat Fender Tech' started by Chuckman, Oct 15, 2019.

  1. Oct 15, 2019
    Chuckman

    Chuckman New Member

    Joined:
    Jan 4, 2011
    Messages:
    27
    ok, building a CJ2a for the Mtns of NC and (gasp) Im going so far to appease the wife that Im putting in a REAL heater AND heated seats. But since this thing will possibly be a partial DD, I need a defroster as well. Anybody got any tips/tricks to do so. I figure Ill do some sort of aftermarket style. Its just that goofy duct is just, well; goofy. Im almost positive that I will add in a secondary, bolt in dash panel; primary purpose to not stand on my head to work on the wiring. Thinking about offsetting it 1/2" just to route a duct.
    I have the fab skills to do almost anything like that, but sometimes simple is better, but Im not scared of making something functional over stock. I have restored a factory perfect GPW, and have no desire to do that again. even considering the late model chevy trick of routing water to the heater first before opening the thermostat!

    -Chuck
     
  2. Oct 15, 2019
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
    Joined:
    Aug 13, 2015
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    3,389
    Every time I disassemble a car, I keep the heater ductwork. It’s always a conglomeration of interesting 1” tubing and spouts. Like miniature shop vac hoses and attachments.

    I figure if I ever need to run a defroster in a flatty, I’ll use that as a seasonal solution. It could clip onto the dash during the winter with those tool clips that hang mops in a closet, then remove it for the rest of the year.
     
  3. Oct 15, 2019
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
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    Oct 25, 2006
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    4,603
    Man, I donno. That seems like a tall order in a CJ2A with the venting windshield. I had a hardtop in Wa state (Olympia) and the rain was everyday inside and outside. I kept a rag in there to wipe off the condensation.

    The worst was in New jersey in my 77 CJ5 in the winter. That had a "defroster"... Condensation would freeze inside on the glass AND outside. I would have to smash off the ice on the soft top.

    That was the winter I decided to move out of new jersey forever.
     
  4. Oct 15, 2019
    sgogpn

    sgogpn Member Sponsor 2019 Sponsor

    Glendale, AZ.
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  5. Oct 15, 2019
    duffer

    duffer Rodent Power Sponsor 2019 Sponsor

    Bozeman, MT
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    Sep 17, 2009
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    This is what I made for the 3B.
    [​IMG]

    Function wise, it is the same as the CJ 5/6 arrangement. I used it with a Datsun 310 heater for decades. It wasn't ideal as the defrost vents exited the sides and had a couple of 90 degree elbows to get into my duct below the windshield. It is in the process of being replaced by a Vintage Air unit with the defrost aimed at the dash and my duct-perfect. The Vintage Air unit comes with ducting and vents but I didn't use any of that. My vents are from a 60 Rambler-----
    https://www.summitracing.com/parts/...MIx5eU8sif5QIVBNVkCh1CGwfMEAQYAiABEgJRk_D_BwE

    The Vintage Air unit has another advantage: It is all servo controlled. No cables to deal with. I installed the same unit in my RZR 900 Trail.
     
  6. Oct 15, 2019
    garage gnome

    garage gnome Rust polisher Sponsor

    Western MA
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  7. Oct 17, 2019
    jeep2003

    jeep2003 Active Member

    Vestal NY
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    May 30, 2006
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    1,458
    Mine has a rubber hose up to a copper pipe with slots in it. Its clean. It sorta works if it had a stronger fan and the heat actually got hot it might actually be acceptable. When i used to use it in high school all winter id have to crouch down to see through the little triangle on the bottom.
     

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  8. Oct 21, 2019
    Keys5a

    Keys5a Sponsor Sponsor

    Florida Keys
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    Jan 23, 2014
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    2,262
    I like Mike's Amazon mini hair dryer!
    I parted out an old flat-fender decades ago that had that defroster duct on the windshield frame like Herm reproduces. I thought it was cobbled together by some previous owner. Never knew those were factory parts!
    -Donny
     

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