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Floor Temperatures

Discussion in 'Early CJ5 and CJ6 Tech' started by Scott Bruns, Mar 27, 2023.

  1. Mar 27, 2023
    Scott Bruns

    Scott Bruns New Member

    Phoenix, AZ USA
    Joined:
    Feb 19, 2018
    Messages:
    38
    Took a drive today and when I got home I decided to take some photos of my CJ6 with a FLIR infra-red camera. I was surprised to see how hot the driver's side floor was:

    upload_2023-3-27_15-36-8.png

    The air temp is in the 60s here in Phoenix so the rest of the body was pretty cool. This seems like it is heat radiating off the driver's side header.

    The passenger side looks like this:

    upload_2023-3-27_15-40-59.png

    Should I be concerned about the higher temp on the driver's side? Maybe add some insulation or a heat shield?
     

    Attached Files:

  2. Mar 27, 2023
    Beach66Bum

    Beach66Bum 1966 Tuxedo Park Mark IV 2024 Sponsor

    Big Island on...
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    First, wow is that ever cool!
    I think it's hotter on the drivers because there's less air flow thru that side when driving, ie.
    the steering box restricts
     
  3. Mar 27, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    Looking forward to the Phoenix summer test. I have some 1" dense Armaflex EPDM foam that I used in another jeep.
    That and a piece of cheap carpet. Drive barefoot.
     
    Ol Fogie likes this.
  4. Mar 27, 2023
    3b a runnin

    3b a runnin Active Member 2023 Sponsor 2022 Sponsor

    virginia
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    160 is HOT
     
  5. Mar 27, 2023
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
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    Jul 30, 2003
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    8,513
    My dad melted his boots to the floor with his first 66 V6 demo CJ5.
     
    Fireball and Ol Fogie like this.
  6. Mar 27, 2023
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Is that a 4 banger? I'ld pop the hood and check for exhaust leaks if it is a 6cyl but yep they get toasty.

    If you think about it the engine is at least 165deg so that's about right.
     
  7. Mar 27, 2023
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
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    When I had my 225 with headers and mufflers under the floor it would boil my gasoline in the underseat tank on hot days.
     
  8. Mar 28, 2023
    fhoehle

    fhoehle Sponsor

    Harford Township, PA
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    Must be why Jeep had such crappy heaters, they figured the body heat was enough!
     
    Stakebed and maurywhurt like this.
  9. Mar 28, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Reminds me of one of my earliest jeep experiences...

    Family with a flatfender was taking us kids to the local swimming hole, and I claimed 'first dibs' to sit in the open tailgate. I was surprised the other kids didn't argue. As we went down the road I found out why - the hot muffler under the tub floor!
     
    Stakebed and Fireball like this.
  10. Mar 28, 2023
    kenb

    kenb Cleverly disguised as a responsible adult

    Detroit
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    Jan 22, 2019
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    Isn't the exhaust manifold extremely close to the Ross box on the Dauntless? That could explain that hot spot.

    This must be why you're not supposed to drive barefoot.
     
  11. Mar 28, 2023
    68BuickV6

    68BuickV6 Well-Known Member

    Hesperia, CA.
    Joined:
    Mar 12, 2012
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    2,160
    The '66 gets hot on the floor with fenderwell Hedman Headers. Great in the winter, built in heat!
    I've never thought to measure the temperature though.
     
    Twin2 likes this.
  12. Mar 29, 2023
    Scott Bruns

    Scott Bruns New Member

    Phoenix, AZ USA
    Joined:
    Feb 19, 2018
    Messages:
    38
    This is a V6 with block hugging headers. Here is a photo from under the hood:

    upload_2023-3-29_9-27-46.png

    I think I'm going to make a heat shield to see if that drops the floor temp.

    Here is the temps of the header. I think the 217.2 F is the Y pipe, it runs down the driver's side:

    upload_2023-3-29_9-26-44.png

    It looks like the radiator is working well:

    upload_2023-3-29_9-30-9.png

    The 148.1 F is the end of my tailpipe:

    upload_2023-3-29_9-31-0.png
     
  13. Mar 30, 2023
    Scott Bruns

    Scott Bruns New Member

    Phoenix, AZ USA
    Joined:
    Feb 19, 2018
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    I threw together a heat shield to see home much cooler the floor would be.

    upload_2023-3-30_20-51-6.png

    The floor looks a lot cooler now.

    upload_2023-3-30_20-52-28.png

    Under the hood the shield looks pretty hot.

    upload_2023-3-30_20-53-41.png

    I only drove for about 20 minutes, and it was only in the 50s here today. I'll have to check this again after taking a longer drive on a warmer day.
     
    Beach66Bum, melvinm and vtxtasy like this.
  14. Mar 31, 2023
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Maryland
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    Wrapping your heades / downpipes makes an enormous difference. I can almost hold my hand on my exhaust.
     
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