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Though it may SEEM that I randomly decided to install my duct where I did, in reality this was an extensive process, with actual measurements taken and everything! ;p
To answer some of the questions and make some suggestions of my own:
Getting air OUT of the engine compartment: Yes, more "vent holes" would work, since heat does in fact rise like our elementary school teachers told us it does. MAJOR PROBLEM: Saab had the same idea, yet had to discontinue the dual vented hood GM mentioned in his post, since the vents feed directly onto the brake fluid reservoir, which A: does not let much air out and B: lets lots of rain water in, onto the fluid reservoir = NOT A GOOD IDEA.
In traffic, if you are worried about forced air intake, get off the shoulder and slow down. The police will help that process along for you. If you go fast in traffic, you have plenty of other things to worry about besides hot air in your engine.
Intercooler cooling: The IC does get nice cold air forced onto it from the front, which is why you cannot block it with a duct to direct the air elsewhere. You CAN do this, but it is not a good idea, since the IC is already ineffective as it is.
As far as my location selection: Who cares how high off the ground the duct is during forward motion? 3" and 3' are all the same at 70+ mph. When the car is at rest, or moving slowly (in traffic and not passing people on the shoulder) air is not being forced up into the hose like it is during forward motion. My duct DOES restrict the flow of air while moving slowly, since air cannot as easily escape the engine compartment from below, since air is still moving around at that point(which is why I installed the newer thermo switch to kick the fans on at a lower temperature)
The solutions otherwise require metal work, such as cutting and welding, of which I am not a student. I'd love to learn, but that hasn't happened yet. The BEST solution would be: Cowl induction. The cowl is the area below the windshield, where loads of cold air slams into your windshield and passes on from there. If one were to BEND/CURVE the hood up at that point, and attach cowl induction ducting from there, then you'd be talking.
cowl_ _____________
\ / \
______/ / \
/ \
|__ 0000 ____________ 0000 ____|
0 0 0 0
0000 0000
Ok, so it only sort of looks like a Saab! Anyway, air gets forced under the car during forward motion. By "catching" some of it, I can cool off the air entering my engine. I noticed a decent performance gain with my affordable and thought out modification.
Mike
, Wed, 9 May 2001 23:24:43
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