Wrapping stock intake with tinfoil bubble and then heat resistant wrap?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by h1ph0panonymous, Jul 11, 2025 at 3:11 AM.

  1. h1ph0panonymous

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    Good talk!
     
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  2. h1ph0panonymous

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    Isn’t there an EGR delete method?

    Regardless the growing consensus is that head gaskets will fail no matter how much cleaning of the intake manifold and EGR system you do.

    Now the theory to why the head gasket fails has a temperature causation with the coolant.
     
  3. BiomedO1

    BiomedO1 Senior Member

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    Your using your cabin heat exchanger like a small radiator. As I stated in post #15, you'd see at least a 2x+ improvement by manually toggling the cooling fans in the engine compartment. Larger mass radiator and two giant fans.....

    Any performance / fabrication shop can do both for you...
     
  4. h1ph0panonymous

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    Every car I owned I disable all those cabin air settings to off as it puts more strain on the car during initial start ups, it doesn’t need to run all those settings and accessories during the initial start up, warm the car up first then turn those settings on if you want lush climate inside the cabin as for me I like driving with windows open during the summer, I don’t need to be acclimated to air conditioned life 24/7, because you become a whiny little bitch the second you’re somewhere that doesn’t have AC.

    Regardless, disabling these settings had a secondary effect, engine bay heat transfer to the cabin.

    So if one modifies the sensor to have the radiator fan blowing 24/7 isn’t that just more strain on parts of the car defeating the purpose of why I personally disable things that don’t need to be running on initial start ups especially in the winter the car will take forever to warm up if the radiator fan is on during start ups?

    Now if there’s a manual switch to turn on the radiator fan, then I would probably look into that in particular.
     
  5. BiomedO1

    BiomedO1 Senior Member

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    Why would it take forever to warm-up in the winter? Did you remove your thermostat or jam it in the open position? That car should only take about 5 minutes to warm up.
    Please re-read what I posted in #15 more carefully. There's no need to be insulting, I'm just making suggestions so you can achieve your goals.......
     
  6. h1ph0panonymous

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    I’m saying if I modified the radiator fan to be on 24/7 then it would take the engine forever to warm up in the winter which was in response to the person I quoted saying to get it modified, but a manual switch would suffice as I can just keep it off during winters. Or if there is a way to modify it to click on earlier like at 190 degrees instead of 200 degrees.
     
  7. Mendel Leisk

    Mendel Leisk MMX GEN III

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    That's pretty straightforward: if you set cabin heat to high it'll help drop engine coolant temp.
     
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  8. h1ph0panonymous

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    Yes and it’ll still exhaust with the fan to OFF with HI (highest hot setting), just making sure that information is out there in case someone thinks the fan needs to be on to get that effect. But also make sure AC is off and the recirculating setting is off before turning the fan off. Recirculation should only be used when driving before you pass a land fill (garbage smell) or dirty air quality if you’re using climate control in the first place that is.
     
  9. BiomedO1

    BiomedO1 Senior Member

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    1. NO; it wouldn't - thermostat opens up @ around 180F. Check your coolant pathways with the thermostat closed!!! Coolant loops through your cabin heater core but doesn't go to the radiator until it gets up to around 180F.

    2. It's easy to modify the fan control temperature sensor. You just need to figure out the sensors resistive trip point, do some math and place the outcome resistor value in parallel. If you want it reversible, just wire it in as a pigtail connector.

    Don't dismiss other people's ideas; just because you think your smarter than everyone else............ Some people may actually know more than you......
     
    #49 BiomedO1, Jul 11, 2025 at 3:55 PM
    Last edited: Jul 11, 2025 at 4:32 PM
  10. BiomedO1

    BiomedO1 Senior Member

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    When someone tells me "engine bay heat" I take that literally; meaning cooling down the engine bay - NOT engine coolant. The discussion was wrapping the intake manifold to avoid heat soak. Heat soak would be external and environmental (area around the intake manifold). So you can easily see my confusion.......
     
  11. ChapmanF

    ChapmanF Senior Member

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    I guess you can use 'redline' to mean whatever you choose it to mean; it just doesn't help other people understand you.

    In fact the heat will transfer at the same rate (for a given fan speed) for any temperature setting from HI down to a few degrees above the current cabin temp. The air mix door is sent to max hot whenever the setpoint is more than a little above the cabin temp, and only begins to modulate when the cabin temp is getting close to setpoint.

    But higher rates of heat transfer go with higher fan speeds.
     
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  12. h1ph0panonymous

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    1. If it’s modified to be on 24/7 yes it will be hard to warm up the engine in the winter but this is just pedantry at this point.

    There was no dismissal of anyone ideas, I’m still interested in a manual switch to the cooling fans. No they don’t turn on at 180 degrees...and if you’re still butt hurt that I called the average human who is acclimated to conditioned air that will whine like a bitch when not around conditioned air then let me rephrase, NOT YOU specifically that was referring to, humans in general in first world countries whine about things third worlders don’t have.
     
  13. h1ph0panonymous

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    Literally anything over +2200 RPM in lower gears in high rpm, redline is just higher than average operating RPM.
     
  14. h1ph0panonymous

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    No, the setting of 85 compared to HI gives a difference, the heat exchange is a whole other creature when it’s on HI.
     
  15. Brian1954

    Brian1954 Senior Member

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    This thread has been very entertaining. I can't wait to see where it leads to the rest of today and then tomorrow.
     
  16. Brian1954

    Brian1954 Senior Member

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    Some people just do not understand how the engine cooling system works in their car.

    Since this thread is so entertaining to me, I wanted to add the following:
    There are people that do not know the purpose of a thermostat in an engine cooling system. Here is a post made on August 1,2023 in a different thread made by a member (whom I will not name) of this forum:
     
    #56 Brian1954, Jul 11, 2025 at 5:42 PM
    Last edited: Jul 11, 2025 at 6:30 PM
  17. ChapmanF

    ChapmanF Senior Member

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    That may be what it means to you, but to others it has a much more specific meaning.

    This is easy to check by watching the air mix servo while changing the temp setting. There isn't anything else that changes the heat exchange into some other creature.

    What's different about HI is it will treat the setpoint as higher than the cabin temp no matter what the cabin temp is. A setting of 85 will begin to modulate the air mix back as the cabin temp gets close to 85, but for lower cabin temps that are not close to the setpoint, the door stays at max hot.
     
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  18. h1ph0panonymous

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    On the topic of redline, this is my understanding of it:

    Redline - Wikipedia
     
  19. Brian1954

    Brian1954 Senior Member

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    The first sentence from the link you provided. "The redline is the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine." The third sentence in the link is "Redlining is riding or driving an automotive vehicle above the redline." That is pretty much the same as the link that ChapmanF posted in post #57.

    So your use of redline in post #53 (Literally anything over +2200 RPM in lower gears in high rpm, redline is just higher than average operating RPM.) is very different then the link you posted to.
     
    #59 Brian1954, Jul 11, 2025 at 6:40 PM
    Last edited: Jul 11, 2025 at 6:47 PM
  20. h1ph0panonymous

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    Yes a Prius redline is very different from a non-hybrid vehicle or sports vehicle but going over +2200 rpm still generates heat more than 188 degrees, it is a Prius redline, not a standard redline term because we are discussing it in a Prius forum.