LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

Custom cold air intake box

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Old 12-29-17, 07:57 PM
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05ls430518
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Originally Posted by semar
Just read what Kenne Bell ( a leading manufacturer of superchargers, and original designer for the Buick Grand National turbo)) has to say:
Kenne Bell - Tech - FAQ - what is the most ridiculous aftermarket product.
Personally I cannot see how a wrapped intake pipe can prevent hot underhood air being sucked in by the filter cone
This is step 1 in my two step process I am making a aluminum shield that will have "air ducts" funneling cold air directly onto the filter as well I am drawing out what I am going to do I am going to mock up cardboard tomorow to show what the heat shield will look like, also there is proof it works numerous people with turbocharged cars have done this and it does help.

There was an error on my part with the title I should have labeled it short ram intake air box, but the wrap I am using is supposed to reflect the heat away from the pipe and once I make the heat shield with air ducts it should work better and make more sense.

Last edited by 05ls430518; 12-29-17 at 08:03 PM.
Old 12-29-17, 08:02 PM
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YODAONE
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Originally Posted by 05ls430518
You have no idea what you are talking about the a650-e is good to 450hp numerous posts on the gs sc and supra forums will back this up. So please unless you are going to contribute factual usefull information or prove that your the "alpha male" please stay out of my thread.
Agreed. There is nothing further to add.. To avoid future critique, consider directing similar backwoods hack job editorials to diesel truck tractor pull.magazine.
Old 12-30-17, 12:30 AM
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Originally Posted by YODAONE
Agreed. There is nothing further to add.. To avoid future critique, consider directing similar backwoods hack job editorials to diesel truck tractor pull.magazine.
Why don't you hop in your clapped out ls400 and leave, you can listen to your extrude honed intake as your driving away.

Last edited by 05ls430518; 12-30-17 at 12:58 AM.
Old 12-30-17, 12:50 AM
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Tomorow I will be showing how to make the heat shield and do the duct work as well, many pictures to come.
Old 12-30-17, 01:02 AM
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RRocket
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Actually, I think the extrude hone LS400 vs headers LS430 would be a close race, having personally seen the benefits of extrude honing on V8 intakes. I think it would be closer than you guys think!

As far as the lid? It depends how well you could get it to seal against the hood to prevent engine bay heat from getting into the intake air charge. Ideally, intake temp measuring would be the way to go....I suppose you could go seal to hood first, and if it doesn't work as a lid later.
Old 12-30-17, 01:15 AM
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Originally Posted by RRocket
Actually, I think the extrude hone LS400 vs headers LS430 would be a close race, having personally seen the benefits of extrude honing on V8 intakes. I think it would be closer than you guys think!

As far as the lid? It depends how well you could get it to seal against the hood to prevent engine bay heat from getting into the intake air charge. Ideally, intake temp measuring would be the way to go....I suppose you could go seal to hood first, and if it doesn't work as a lid later.
That's what I was thinking I am trying to figure out a way to measure the understood temps next to the filter behind the heat shield and outside the heatshield.

What's your opinion on this I am going to use 3m window urethane on the top then buy some vacume hose slice it in half and use that to make a seal against the hood.

If I end up making a lid I am gonna make it go over the entire thing and bolt to the radiator support so if I need to change a lightbulb it does not involve destroying something lol I honestly am still drawing up the plans but I will be making it tomorow so we will see what route I decide to go.
Old 12-30-17, 01:20 AM
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RRocket
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I think there's a table in the OBD II readings that measure intake temp isn't there?
Old 12-30-17, 08:18 AM
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Originally Posted by RRocket
I think there's a table in the OBD II readings that measure intake temp isn't there?
I was thinking about that I also want to set up a remote thermometer thing that I can show the temperature while driving around as well. I am gonna be buying the other stuff to finish the heat shield today.
Old 12-30-17, 10:54 AM
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Default intake

you could also go the russian tuning route
Old 12-30-17, 12:15 PM
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Originally Posted by kitabel
Soft-bodied rubber hose makes an effective seal, it compresses to follow the contour quite well and lasts longer than A/C foam strip etc.

For those watching the photos: please remember that it's still in process, don't duplicate what you see.
Why?
Because the cone filter is taking pre-heated air from the back of the radiator core at 195° thermostat temperature.
Until the shield is in place what you see is far worse than stock.

In addition to blocking all underhood air, what entry point are you considering? From what I've read, just using an available opening in the grill, etc. isn't as effective as it looks because the nose of the car creates a bubble of turbulence ahead of the car that confuses air intakes. Many have used a trumpet with a bell mouth extending ahead of the nose to get "clean" air.
I was thinking about making a duct out of sheet metal so it mimics the stock one so it's in the same placment, but it will have the one end of hose on it and the other end will flow cold air directly onto the filter. I am going to post some pictures to show my mock up I just got home so I will have them up within the hour
Old 12-30-17, 12:38 PM
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Originally Posted by semar
you could also go the russian tuning route
Look at that bookshelf on the trunk lmao
Old 12-30-17, 02:05 PM
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So the brown paper is going to be the aluminum tubing and the cardboard piece will be remade out of aluminum or steel flashing both will have heat reflective tape on them, that is what the end result should look like.

I plan on having something similiar to this behind the grill attaches to the pipe then run the pipe to the filter.

Last edited by 05ls430518; 12-30-17 at 02:14 PM.
Old 12-30-17, 07:45 PM
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Originally Posted by YODAONE
Agreed. There is nothing further to add.. To avoid future critique, consider directing similar backwoods hack job editorials to diesel truck tractor pull.magazine.
Originally Posted by 05ls430518
Why don't you hop in your clapped out ls400 and leave, you can listen to your extrude honed intake as your driving away.
Both of you guys, keep this thread mature and polite.
Old 12-31-17, 06:29 AM
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I ordered these last night this is what will be going on the ls for the final result.



Old 12-31-17, 10:49 AM
  #30  
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Well, I hope this works for you. Kudos to you for coming up with an original idea. Your last name isn't MacGyver, is it?


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