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Hot Rods Carb icing

Discussion in 'The Hokey Ass Message Board' started by phat rat, Dec 25, 2019.

  1. phat rat
    Joined: Mar 18, 2001
    Posts: 4,309

    phat rat
    Member

    Has anyone here had experience with a 3 X 2 Offenhouser intake Dodge Hemi causing carb icing? I have sweating in the summer but yesterday I had the T out and boy did the center carb base and intake right under the center carb ice up. Wondering if anyone has come up with a cure. I'm trying to figure a way to get heat there but so far I'm brain dead on an answer. Being this is all out in the open I don't want something that looks like sh%&t. It's the T pictured below so no heater either
     

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    Last edited: Dec 25, 2019
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  2. gene-koning
    Joined: Oct 28, 2016
    Posts: 1,542

    gene-koning
    Member

    Probably going to look like shit, but running a tube with engine coolant passing through under the intake, or along side the base of the carbs will probably solve the carbs icing problems. A guy could use a polished tube with a shutoff valve at the rear for summer use. Gene
     
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  3. oldiron 440
    Joined: Dec 12, 2018
    Posts: 1,279

    oldiron 440
    Member

    It would work if you don't have a heater in the cat also, just get it to the carb and return it.
     
    Last edited: Dec 25, 2019
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  4. phat rat
    Joined: Mar 18, 2001
    Posts: 4,309

    phat rat
    Member

    Thanks Gene, but even in the summer it makes enough condensation to splash up on the windshield
     
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  5. oldiron 440
    Joined: Dec 12, 2018
    Posts: 1,279

    oldiron 440
    Member

    Are you using e-10 or regular fuel?
     
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  6. deathrowdave
    Joined: May 27, 2014
    Posts: 2,016

    deathrowdave
    ALLIANCE MEMBER
    from NKy

    The heat transfer passage in your intake must be plugged with carbon . Every Mopar I have ever touched had this issue . I would see NEW ones in the 70s with carb issues, that required removing the intake and cleaning the passage . I remember one that required an air chisel and a drill it was so plugged up . Lots of people use the plates to block off the exhaust from under the intake when racing or living in warm climates .
     
  7. Torana68
    Joined: Jan 28, 2008
    Posts: 1,128

    Torana68
    ALLIANCE MEMBER
    from Australia

    All three carbs connected ?
     
  8. It looks like crap. My 6 cyl Hercules in my lincoli carb icing 001.JPG carb icing 002.JPG n welder iced terrible . I ran a copper tube( stolen from the still) from the exhaust and wrapped it around the intake. cured the problem. You are going to have to heat the intake manifold.
     
  9. carbking
    Joined: Dec 20, 2008
    Posts: 2,611

    carbking
    Member

    The above plus, check your mixture settings. Too rich a mixture can either cause sweating/icing or if already present, make it worse.

    Jon.
     

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