Anyone running a cold air intake without the heat shield?

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by ChristianDev, May 17, 2018.

  1. ChristianDev

    ChristianDev Well-Known Member

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    I got a deal on a used JLT intake that didn't come with the heat shield. Is there a big difference with the shield? Any idea where I could get one?
     
  2. Lonmon

    Lonmon Well-Known Member

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    I'm not sure how big of a deal it is on the street but I ran without one for a while and on the dyno it made a noticeable difference. We picked up 7-8whp from shielding the intake from the heat coming off the headers. On the street I didn't notice a difference in power but it may be hard to feel less then 10hp. I would call JLT and see if you can buy just the shield.
     
  3. 2015Etrac

    2015Etrac Well-Known Member

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    I'd get a heat shield for it. I see they even sell a small foam piece now that goes over the tube where it enters the heat shield housing to seal it to the hood, and I've seen people saying even that helps a good amount with temperatures. I could be wrong but that part might be included with the new JLT intakes? Might be worth getting one of those as well.
     
  4. OP
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    ChristianDev

    ChristianDev Well-Known Member

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    Thanks guys, thats what is was afraid of. Hopefully JLT will sell me just the heat shield
     
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    ChristianDev

    ChristianDev Well-Known Member

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    Well that’s an expensive few pieces of plastic... 75647421-399B-4C0E-AF62-92CBE50C46E0.jpeg
     
  6. wildcatgoal

    wildcatgoal @sirboom_photography

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    Heat shield doesn't do much for blocking engine heat. What they DO is help contain cold air that comes in through the front of the car when the vehicle is moving such that it gets sucked into the intake instead of more of a combination of the hot air already in the engine bay with any new air coming through the front of the car. The GT350 CAI is much better at blocking out hot engine bay air even though it is open element, and it had to be in order to qualify as a part on a production vehicle. Steeda's seals really well, too. JLT... meh.
     
  7. Ebm

    Ebm Well-Known Member

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    .

    I agreed with everything you said until the last sentence.

    Dude...

    Nothing wrong with JLT. I have a JLT. Did you have a bad experience?
     
  8. WildHorse

    WildHorse N/A or GO HOME

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    This dropped my IAT's significantly and bought me a 10th in the quarter.
    [​IMG]
     
  9. Bill88stang

    Bill88stang Well-Known Member

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    anymore pics of info of what you did?
     
  10. Joe 5.0

    Joe 5.0 Well-Known Member

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    +1
     
  11. Diocletian

    Diocletian Well-Known Member

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    Did you just seal the open air portion of the intake with heatwrap? I mean I guess that works! Might as well heat wrap the intake tube as well
     
  12. WildHorse

    WildHorse N/A or GO HOME

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    Tried wrapping the tube, after a while the tube just heats up. I sealed the open portion yes, and put heat wrap along the sides of the box that faces the engine. Also put some wrap over the rad under the MAF. All in all highway IAT didn't drop that much, bombing around town in 30*c heat IAT's are within 10*c of ambient whether i'm at 20km/h or 60km/h. Also the IAT drops very fast, at the track it normalizes around the 330' mark. I'll take more pics later.
     
  13. w3rkn

    w3rkn Well-Known Member

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    He just stated what is wrong with JLT design. It is open air design and doesn't allow for efficient use of the "ram air" effect. Leaving many people to have to modify theirs because it is not a true closed system.
     
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