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Technical Distance - ??Exhaust Pipe from Fuel Tank

Discussion in 'The Hokey Ass Message Board' started by fordstandard, Feb 8, 2020.

  1. When routing an exhaust pipe; up over rear and near the gas tank , exiting out under bumper -what is considered safe/unsafe distance away from gas tank ?

    I was told at that point the heat of the pipe is not as intense as further up at engine and mid area of the system

    * Found some example pictures
     

    Attached Files:

  2. squirrel
    Joined: Sep 23, 2004
    Posts: 46,862

    squirrel
    Member

    Four inches.
     
    Desoto291Hemi and trollst like this.
  3. rusty valley
    Joined: Oct 25, 2014
    Posts: 1,751

    rusty valley
    Member

    my 34 ford, and i think fords thru about 1940 the exhaust is only about one inch from the tank. however, flathead exhaust is cooled going thru the water jackets, and lets not forget flatheads have been known to have vapor-lock issues.
     
  4. 42merc
    Joined: Dec 19, 2010
    Posts: 725

    42merc
    Member

    IMO just enough so as not to touch.
    There is not enough heat to talk about.
     
    olscrounger and firstinsteele like this.

  5. jimmy six
    Joined: Mar 21, 2006
    Posts: 7,115

    jimmy six
    Member

    I’ve got a pickup that exhaust pipe is a little over 1” from the spare tire with no shield and never had a problem. You can almost grab the chrome tip.
     
  6. I would give myself all I could,,,as a safety margin .
    When sitting idling in traffic in July,,,,all things get hotter quick .
    Just saying .

    Tommy
     
    pitman likes this.
  7. Factory on my '50 Buick is a couple inched.

    Ben
     
  8. pitman
    Joined: May 14, 2006
    Posts: 4,976

    pitman

    When close by, a SS heat shield might serve. Or an extruded AL jacket around the pipe. Convective air flow would lower the pipe temp.
     
    Desoto291Hemi likes this.
  9. Halfdozen
    Joined: Mar 8, 2008
    Posts: 606

    Halfdozen
    ALLIANCE MEMBER

    If in doubt, wrap the pipe.
     

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