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Whats this thing??

Discussion in 'Flat Fender Tech' started by neptco19, Nov 12, 2005.

  1. Nov 12, 2005
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
    Messages:
    1,381
    While I was messing with the flattie today I noticed this thing that came out of the exaust manifold. What does it do??? It swivells back and forth...

    [​IMG]
     
    neptco19, Nov 12, 2005
    #1
  2. Nov 12, 2005
    gte636p

    gte636p Member

    smyrna, Ga
    Joined:
    Sep 23, 2002
    Messages:
    492
    should help heat up the intake when everything starts up... heat riser if i'm remembering the term correctly.
     
    gte636p, Nov 12, 2005
    #2
  3. Nov 12, 2005
    48cj2a

    48cj2a http://bantamt3c.com

    Central Illinois
    Joined:
    May 4, 2003
    Messages:
    526
    Correct, there is a little coiled up spring on the other side of that disk. The shaft has a valve flap in side the mainfold that heats up the chamber below the intake/carb area.
     
    48cj2a, Nov 12, 2005
    #3
  4. Nov 12, 2005
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
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    1,381
    Well ya learn something new everyday. I've heard people talk about the heat riser but I didnt really have any idea what it was. :oops: :oops:
     
    neptco19, Nov 12, 2005
    #4
  5. Nov 12, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
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    4,275
    The spring is broken on 99% of the old jeeps I've seen. I got the kit and rebuilt mine when I did the engine and it works really well! It helps to warm the base of the carb when it's really cold out, to help alleviate the stumbling and such.
     
    w3srl, Nov 12, 2005
    #5
  6. Nov 12, 2005
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
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    1,381
    how would you check the spring?? When I turned it by hand, it would turn back a little on its own, but not all the way.
     
    neptco19, Nov 12, 2005
    #6
  7. Nov 12, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
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    4,275
    When cold, the spring should hold the weight in the down position, and the flap inside is closed. As the spring warms up, it will expand and gradually lift the weight upward, opening the flap with it. Once up to temp, the weight / flap will be wide open for max efficiency.

    Clear as mud?
     
    w3srl, Nov 12, 2005
    #7
  8. Nov 12, 2005
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
    Messages:
    1,381
    Yep. I'll check it out tommorow and see if it moves any when its warmed up. Thanks for the help :beer:
     
    neptco19, Nov 12, 2005
    #8
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