Heat Riser

Discussion in '1947-1954' started by JW 54, Oct 25, 2012.

  1. JW 54

    JW 54 Member

    Joined:
    Nov 12, 2009
    Messages:
    113
    Location:
    Cypress Texas
    The heat riser in my manifold is rusted in place. I don't know if it is open or closed. My question is, how critical is it that this be freed up? What are the consequences of being stuck open or closed?

    Thanks, JW
     
  2. ol' chebby

    ol' chebby Member

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    Dec 11, 2007
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    3,167
    Location:
    Charlotte,NC
    Open will overheat your intake, often causing vapor lock. Closed will make it warm up the incoming much slower.....no problem if you live down south.
     
  3. spurgeon

    spurgeon Member

    Joined:
    Apr 9, 2012
    Messages:
    128
    My experience servicing these when they were nearly new says many were in need of freeing up. The cure then was taking a SMALL hammer and alternately tap both sides of the flat side till they freed up. I can't recall it ever not working...
     
  4. vwnate1

    vwnate1 Member

    Joined:
    Jan 1, 2000
    Messages:
    11,689
    Location:
    AMERICA !
    What HE Said !

    Of course , before you touch it you'll want to soak it with Chrysler's Heat Risor Solvent , this is *THE* stuff to use as it's a penetrant with graphite so after you get it loosened up, the graphite remains to lube it....

    BE GENTLE ! the shaft is *very* easy to break :eek: , no new parts for this .
     

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