Fuel Line To Heat Source Clearance?

Discussion in 'Early CJ-5 and CJ-6 Tech' started by Karl Childers, Dec 3, 2017.

  1. Dec 3, 2017
    Karl Childers

    Karl Childers Member

    Taos New Mexico
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    One of my Winter projects will be to convert my CJ5 back to gas from its current propane set up. When I do that the gas tank will go back under the seat and the old fuel line will go in its normal location. The potential problem is the previous owner had a brand new dual exhaust system installed and the one exhaust pipe will come with in 2 inches of the fuel line and three inches of the floor that will have the gas tank right above it. Will insulating the fuel line in foil and putting an aluminum heat shield between be enough or should I get a muffler shop to re-route the pipe?
     
  2. Dec 3, 2017
    45es

    45es Sponsor Sponsor

    Naches, WA
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    I would think a heat shield will more than addiquate. That's exactly how jeep protected the under floor brake master cylinder.
     
  3. Dec 3, 2017
    PeteL

    PeteL Member Sponsor

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    A flat heatshield with air on both side ought to be plenty adequate.
     
  4. Dec 3, 2017
    NCRenII

    NCRenII Member

    Far Nor Cal
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    This is precisely how my stock 71 fuel line is protected from the exhaust/headpipe junction on the drivers side. Fuel pump is right there too.
     
  5. Dec 3, 2017
    Karl Childers

    Karl Childers Member

    Taos New Mexico
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    That's the answers I was hoping to hear I'd rather go the shield route than have the exhaust cut up.
     
  6. Dec 3, 2017
    tarry99

    tarry99 Member Sponsor

    Northern California
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    New Mexico?..............If you Idle that allot in the heat , I would move the fuel line away from the heat source.......that floor can get real hot when warm outside.
     
  7. Dec 4, 2017
    Karl Childers

    Karl Childers Member

    Taos New Mexico
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    The southern part of the state gets hot as an oven in the summer I live in the northern part at an elevation of 7,500 ft so I see a handful of days in the nineties and most in the eighties in the warm months. Also I'm in a small town that gets a little bit of tourist gridlock in the summer but I know the back ways around it. I'm better off than if I lived in Albuquerque or Las Cruces when it comes to heat and traffic. That should make a difference shouldn't it?
     
  8. Dec 4, 2017
    GeoffreyL

    GeoffreyL Active Member

    moorestown, nj
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    Which motor are you running?
     
  9. Dec 4, 2017
    tarry99

    tarry99 Member Sponsor

    Northern California
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    Just saying Jeeps are like tin cans..........if it's cold out that body is an Ice cube...........if warm , just the opposite............Exhaust routing and likewise fuel line routing is important...... Idling and moving along at slow speeds just does not get enough air moving under the vehicle to keep it from heating up .............if you have a choice route your fuel as far away from the exhaust as possible.
     
    Karl Childers likes this.
  10. Dec 4, 2017
    NCRenII

    NCRenII Member

    Far Nor Cal
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    Not suggesting you ignore Larry's post, but I think you'll be fine. New fuel line material (even the old) is designed to handle high heat. If your jeep has a return fuel line any gas bubbles will be purged off to the tank reducing vapor lock issues. Also airflow from the clutch less fan supply cooling air.
     
  11. Dec 4, 2017
    RATTYFLATTY

    RATTYFLATTY I think you need a little more throttle

    Central MN
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    As noted, a return line will be a good upgrade.
     
  12. Dec 4, 2017
    Karl Childers

    Karl Childers Member

    Taos New Mexico
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    283 sbc with dual exhaust.
     

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