Aluminum Hood Spacers???
10-24-2006 | 07:48 AM
#1
Thread Starter
Contributing Member
Joined: Sep 2002
Posts: 1,192
From: Starkville, MS.
Aluminum Hood Spacers???
Was checking e-bay like I do often and came across this JDM item. Often I've seen tuned cars in the magazines and it appeared to me that the hoods were not shut completely like the Pacific Rim S13 and I always wondered why. This must be the reason. I never knew about this mod until today. It's not something I'm interested in but it does answer a question I had been asking for some time now. 
http://cgi.ebay.com/ebaymotors/Alumi...QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/Alumi...QQcmdZViewItem
Last edited by positron; 10-24-2006 at 07:50 AM.
10-29-2006 | 12:43 AM
#13
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Joined: Apr 2004
Posts: 2,515
From: West Covina/ Irvine
You all do know that does nothing for venting right? The whole hood spcer mod started with hondas wanting to get fresh air for thier ITBs. Since the intake manifold on older hondas are twards teh rear of the hood, lifting the rear causes a vacuum to form making air enter from the rear of the hood into the engine bay bringing in fresh air while the car is in motion. The only time it would actually vent air would be when teh car isn't moving, and well, that's kinda pointless, lol. Want a hood vent, get a vented hood.
10-29-2006 | 01:57 AM
#14
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Joined: May 2005
Posts: 3,096
From: San Jose, CA
could you please explain to me how a vented hood would work then? as i figured it was the same basic idea as raising the rear of the hood.
i always thought that although there is a "low pressure area" under the hood because of the hotter air, the air moving at a faster rate outside of the car would create a lower pressure area. and therefore it would be the opposite of what you said. (the vented/spaced out hood pulling cold air into the egine bay at standstill as opposed to venting it out, although the hot air rising would cause colder air to be pulled in from under the car.
but shiet i never took chemistry or whatever so thats just my guess.
i always thought that although there is a "low pressure area" under the hood because of the hotter air, the air moving at a faster rate outside of the car would create a lower pressure area. and therefore it would be the opposite of what you said. (the vented/spaced out hood pulling cold air into the egine bay at standstill as opposed to venting it out, although the hot air rising would cause colder air to be pulled in from under the car.
but shiet i never took chemistry or whatever so thats just my guess.
10-30-2006 | 12:11 PM
#15
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Joined: Apr 2004
Posts: 2,515
From: West Covina/ Irvine
A reverse cowl hood (vented) would vent air out.
This allows the air to flow out without much disturbance since it's flowing from the radiator to slighty over the engine and out of the vents. Quicker and easier passage. Lifting teh rear of the hood would create a low pressure area under the hood causing air flowing over the hod to go in.
This allows the air to flow out without much disturbance since it's flowing from the radiator to slighty over the engine and out of the vents. Quicker and easier passage. Lifting teh rear of the hood would create a low pressure area under the hood causing air flowing over the hod to go in.