Hot air OUT! New mod for anyone with too much time on their hands........
#1
Blow up or win
Thread Starter
Hot air OUT! New mod sucks! (REALLY..)
I was sitting around yesterday thinking about my old chemistry professor mumbling something about how every 10 degree increase in temperature causes chemical reactions to double in speed. And then I realized that summer is just around the corner and had visions of my engine screaming at me for help. I've been contemplating a "vented" hood but it just did not seem to make a lot of financial sense considering the cost, shipping, painting etc. Plus, who knows how well they work? - and then there's the rain issue...... Here's what I came up with: (and true to my Scotch ancestry this is very thrifty as well)
1. The NACA side fender duct on the passenger side of
my 93 touring does absolutely - nothing. So why not
put it to work ventilating the engine compartment?
Yeah - that's the ticket! So, off comes the fender
and out comes the 3" metal cutting hole saw.
On the inside top of the inner frame you will see a
4" square that has been already been cut out -
perfect for my cut, and inside it there is really
nothing except part of a wire harness in the engine
compartment to watch out for when making the cut.
Wham - a new 3" hole now exists and looks like
this:
1. The NACA side fender duct on the passenger side of
my 93 touring does absolutely - nothing. So why not
put it to work ventilating the engine compartment?
Yeah - that's the ticket! So, off comes the fender
and out comes the 3" metal cutting hole saw.
On the inside top of the inner frame you will see a
4" square that has been already been cut out -
perfect for my cut, and inside it there is really
nothing except part of a wire harness in the engine
compartment to watch out for when making the cut.
Wham - a new 3" hole now exists and looks like
this:
Last edited by RonKMiller; 03-07-02 at 05:32 PM.
#2
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Thread Starter
Damn server.......GRRRRRRRR. Anyway - on with the new thread!
I then lined the hole with strips of foil tape to create a "tunnel" to the outside:
I then lined the hole with strips of foil tape to create a "tunnel" to the outside:
#3
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Thread Starter
OK -
Now we get some foil (not plastic!) clothes dryer 4" super flexible ducting and tape it to the "square", bend it, and cut out an oval section on the interior plastic liner duct to mate it to. Seal both ends with foil tape.
I sealed off the forward end of the duct, as
well as other seams to create a leakproof routing for the exiting hot air. I could have cut off some of the ducting but chose to leave it stock in case I decide to add an extra oil cooler in the future- this way I could just poke through the foil tape to make it functional again without taking the entire fender off:
Now we get some foil (not plastic!) clothes dryer 4" super flexible ducting and tape it to the "square", bend it, and cut out an oval section on the interior plastic liner duct to mate it to. Seal both ends with foil tape.
I sealed off the forward end of the duct, as
well as other seams to create a leakproof routing for the exiting hot air. I could have cut off some of the ducting but chose to leave it stock in case I decide to add an extra oil cooler in the future- this way I could just poke through the foil tape to make it functional again without taking the entire fender off:
Last edited by RonKMiller; 03-07-02 at 05:22 PM.
#4
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Thread Starter
And here's the view of the completed ductwork with some additional aluminum sheet to complete a sealed duct that will interface with the NACA duct. I repeated the process for the driver's side. How well does it work? I intend to do temperature measurements with a calibrated pyrometer (a $1K instrument I just happen to have laying around the shop) at different locations and speeds inside the engine compartment with/without the duct sealed and post them later. Stay tuned sports fans!
Last edited by RonKMiller; 03-07-02 at 05:36 PM.
#6
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Thread Starter
Originally posted by Flybye
Pictures are taking too long to load.
Take your $10 Naca duct and shove it
Pictures are taking too long to load.
Take your $10 Naca duct and shove it
Hmmm, you wouldn't be selling vented hoods per chance? (It's actually more like $7.50 for the foil tape..)
#7
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A vented hood? I drove around WITHOUT a hood
You know, a naca duct attached directly to the turbo manifold may prove to be interesting....
You know, a naca duct attached directly to the turbo manifold may prove to be interesting....
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#9
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Thread Starter
Originally posted by Flybye
A vented hood? I drove around WITHOUT a hood
You know, a naca duct attached directly to the turbo manifold may prove to be interesting....
A vented hood? I drove around WITHOUT a hood
You know, a naca duct attached directly to the turbo manifold may prove to be interesting....
#10
Originally posted by RonKMiller
To quote Dire Straits: "Money for nuttin' and my chicks for free!" I like it but it would exceed my personal budget by at least $10.00 for "cheap ghetto mods that you won't find anywhere else"
To quote Dire Straits: "Money for nuttin' and my chicks for free!" I like it but it would exceed my personal budget by at least $10.00 for "cheap ghetto mods that you won't find anywhere else"
#11
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AHHHHH!!! you cut a 3" hole in an FD
edit-- seriously though... I'd imagine that Mazda put that metal on the frame there for a reason! Maybe i'm misunderstanding what you did with that holesaw...
I have a <much more common> 1990 FC, and i'd NEVER drill a hole in it anywhere...
edit-- seriously though... I'd imagine that Mazda put that metal on the frame there for a reason! Maybe i'm misunderstanding what you did with that holesaw...
I have a <much more common> 1990 FC, and i'd NEVER drill a hole in it anywhere...
Last edited by Manolis_D; 03-07-02 at 10:33 PM.
#12
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Thread Starter
Originally posted by ninetyfourfd3s
Let us know how it works out... if it works well maybe you should add some fans to push more hot air out. It might not be flashy, but hey if it gets the job done...
Let us know how it works out... if it works well maybe you should add some fans to push more hot air out. It might not be flashy, but hey if it gets the job done...
Only by measuring the temperatures will I find out - I'll keep everyone posted on the "science" part as it evolves. Later.
#14
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Thread Starter
Originally posted by Flybye
Are you gonna take temp readings in different locations of the engine compartment?
Are you gonna take temp readings in different locations of the engine compartment?
#15
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Thread Starter
Originally posted by piston eater
AHHHHH!!! you cut a 3" hole in an FD
edit-- seriously though... I'd imagine that Mazda put that metal on the frame there for a reason! Maybe i'm misunderstanding what you did with that holesaw...
I have a <much more common> 1990 FC, and i'd NEVER drill a hole in it anywhere...
AHHHHH!!! you cut a 3" hole in an FD
edit-- seriously though... I'd imagine that Mazda put that metal on the frame there for a reason! Maybe i'm misunderstanding what you did with that holesaw...
I have a <much more common> 1990 FC, and i'd NEVER drill a hole in it anywhere...