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NEW LID CAD Printout, Finally! *pics*

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Old 02-19-2007, 05:25 PM
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Originally Posted by Tainted
I got an idea....

what if you kept the bottom part like a normal lid, and used the same kind of air filter we do now...

now cut the top off a normal lid and add your top part.

then youd have a big air filter surface with plenty of space for air to come through, and had that to get all the air to flow in 1 smooth direction...
I think it would work but I forsee tow issues. Know I freely admit I'm not physasist but I'm an engineer.

1. The lid should work fine on a regular lower air box setup, however by adding the funnel into the upper lid this will have reduced the volume of the airbox, this would most likely negativly affect airbox resonance for a 346ci LS1. It may be better suited to lower displacements though.

2. On a FTRA setup of similar the funnel respresents a narrowing of the passage, at sub-sonic speeds this will have an adverse affect as it will speed up air flow velocity but reduce air flow pressure.

It will in essence be an "anit-ram air" setup.
Old 02-19-2007, 05:25 PM
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Originally Posted by 300bhp/ton
Just an FYI.

An engine only takes in the air it wants/needs restrictions in the intake system can hamper this which is where the aftermarket comes in.

But the crucial thing to rememeber is an engine will be sucking air in. Not having it blown in from the front.

The only methods I've seen of succesful air intakes involve several aspects:

-free flow filter (but not k&n, remember a filters primary job is to filter and cotton weave filters are particulary poor at this, paper is about the most efficent at filtering and the stock OEM filter has been flow tested to 500bhp n/a after that you want to look at sythentic weave filters like the Donaldson Blackwing for the C5 Corvette. Some foam filters are quite good but the poor ones are very poor).

-cool air ducts, this is simply ducting to an outside air source so the the IAT's should remain closer to ambient as opposed to taking air from under the hood. This is what 99% of all "Ram Air" systems are.

-air box resonance, tuning the airbox to the harmonic frequency of the engine.

-Ram intake track tuning, same principle as air box resonance but with the intake tracts in the manifold.

These are all proven techniques used extensivly in competition the world over.

Remember to see a "Ram Air" affect you would need to be traverling around 200mph.

Personally I think your CAD images look pretty but I think the physics behind the design is not upto par.

Seriously just make a simple lid based off of a proven design and offer it in 85 and 90mm openings and sell for like $80 shipped (US mainland) and you'll make a killing.



Arnt there pattents out on the other lids? Where id get introuble if i took one and reproduced it just with a bigger whole?
Old 02-19-2007, 05:26 PM
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Also could still build a filter like are out , just have to make the edges cut so it would fit in there
Old 02-19-2007, 05:27 PM
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Originally Posted by Tainted
We can chit chat all day about why it will or wont be any better but only a dyno will prove it.

I say test it out and see how it performs.
Dyno's are indeed a good idea, but remember the area of fluid dynamics a complex one and trial and error can be a long route.
Old 02-19-2007, 05:27 PM
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Originally Posted by 300bhp/ton
I think it would work but I forsee tow issues. Know I freely admit I'm not physasist but I'm an engineer.

1. The lid should work fine on a regular lower air box setup, however by adding the funnel into the upper lid this will have reduced the volume of the airbox, this would most likely negativly affect airbox resonance for a 346ci LS1. It may be better suited to lower displacements though.

2. On a FTRA setup of similar the funnel respresents a narrowing of the passage, at sub-sonic speeds this will have an adverse affect as it will speed up air flow velocity but reduce air flow pressure.

It will in essence be an "anit-ram air" setup.


ehh oh well I tried. im only 17 but I try to think outside the box and use old and new ideas and combine them to try and make something out of it. but I say it should be tested at any rate!
Old 02-19-2007, 05:36 PM
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Originally Posted by sickws698
Arnt there pattents out on the other lids? Where id get introuble if i took one and reproduced it just with a bigger whole?
I'm not 100% sure but I'd be surprised if that many of the lids are patented.

Also you could make a small variation on the idea so if any where pateneted it would aviod this issue.
Old 02-19-2007, 05:38 PM
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Well looks like thats the way ill be going depending on how this ends up...Soo keep yours eyes open, if this falls through ill be producing a 85 and 90 lid
Old 02-19-2007, 05:38 PM
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Originally Posted by Tainted
ehh oh well I tried. im only 17 but I try to think outside the box and use old and new ideas and combine them to try and make something out of it. but I say it should be tested at any rate!
I agree it should be tried even if it's just for fun.

And it's generally new idea's that come from young people (I'm one of them). I've certainly tried to think outside the box on more than one occasion however most times I find it's already been tried

Still doesn't stop me trying though
Old 02-19-2007, 05:43 PM
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Yah im only 17 also....im tryen at least
Old 02-19-2007, 05:44 PM
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how about everyone measure the lid they have now....i keep hearing people say they want a 90mm lid..I measure the stock lid and the opening was 90mm.I measured my whisper lid and the opening is 90mm.So i still dont know what another 90mm lid is going to do as it will be the same size as other lids.
Old 02-19-2007, 05:53 PM
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not sure what mine is, my cad guy still has it
Old 02-19-2007, 05:58 PM
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yeah i would reely like some people here to measure there stock lid round opening. 90mm is equal to 3.54 inches for those who dont have a mm tape.
Old 02-19-2007, 06:11 PM
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If theres already 90's out it would prob be pointless to make them
Old 02-19-2007, 06:22 PM
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there are no 90s or 85s out but the market is there
Old 02-19-2007, 06:43 PM
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well again if this falls through i will forsure manufacture a 85 and 90 lid
Old 02-19-2007, 08:45 PM
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hmm i dunno man??
Old 02-19-2007, 08:59 PM
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i wish ih ad one made of my own to use and test
Old 02-19-2007, 11:06 PM
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i think the opening for the lid has to slide over the stock tb, thats why its that big... like the 90mm throttle bodies, the opening is that big, but for the lid to slide over it, it would have to be larger than that... i think.. anyone else?
Old 02-19-2007, 11:29 PM
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Originally Posted by 99kamarokid
i think the opening for the lid has to slide over the stock tb, thats why its that big... like the 90mm throttle bodies, the opening is that big, but for the lid to slide over it, it would have to be larger than that... i think.. anyone else?
That's the only difference. A standard lid is as big on the inside of the neck as an 85mm MAF, or a 90mm TB, or whatever, but people don't realize it. The 85mm TSP unit was simply big enough for an 85mm MAF to slide inside of. If you run a standard lid, a coupler, then an 85mm MAF, you'll have the same setup.
Old 02-20-2007, 11:15 AM
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bump...



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