Hood vents question? - Page 2 - Fuelly Forums

Click here to see important news regarding the aCar App

Reply
 
Thread Tools Display Modes
 
Old 06-09-2008, 09:51 AM   #11
Registered Member
 
GasSavers_RoadWarrior's Avatar
 
Join Date: Feb 2008
Posts: 1,652
Even a small amount of forced airflow, rolling at 5mph or having the fan on, will disrupt convection, it's relatively weak, which is why chimneys need to be tall to get good draft in still air. (They get a lot more in a slight breeze too)
__________________

__________________
I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
GasSavers_RoadWarrior is offline   Reply With Quote
Old 06-14-2008, 04:18 AM   #12
Registered Member
 
Join Date: Feb 2007
Posts: 104
Country: United States
Definitely a good mod, IMO. However, I believe you will find that those particular ones are fakers and will need to have holes cut in them to be actual vents.

To all those wondering why, this would redirect some of the air coming in through the grille up and over the car, instead of underneath it. That means cleaner aero and more stable at speed. Google pics of the Ford GT-40. They used a complete duct so all grille air went over the car. No need for grille block then, but it is not always easy to put such ducting in a production car.
__________________

__________________


GasSavers_BluEyes is offline   Reply With Quote
Old 06-14-2008, 08:32 PM   #13
Registered Member
 
Join Date: Jun 2008
Posts: 20
Country: United States
Thank you, BluEyes. I left the Gt 40 out when mentioning the Lotus Elise and Exige in my thread. The Ford GT-40 has a better example of radiator out flow top slots in my view.
Richochet, 14/06/08
richochet is offline   Reply With Quote
Old 06-14-2008, 10:27 PM   #14
Registered Member
 
civic_matic_00's Avatar
 
Join Date: May 2008
Posts: 101
Country: United States
Quote:
Originally Posted by holypaulie View Post
I'm thinking to cut holes in my hood and instal these hood vents http://cgi.ebay.com/ebaymotors/JDM-U...spagenameZWDVW. Where is the best spot on hood for these kind of vents? Is it worth to do this modification?
my car has hood vents right on top of the engine. hot air rises, so that's the best position for the vents in order to dissipate heat.

hood scoops are different. as the name implies, they scoop air into the engine compartment while you're driving and are not for venting heat (although they will vent heat when your idling). hood scoops are best placed near the engine's air intake to maximize cold air for power. these are mostly at the sides of the hood or at the front of the hood and the air will be "scooped" into the engine compartment and cool the area right where the intake is located. in general, hood scoops are placed where the air intake is located in order to scoop cold air into the intake.

while driving, hood scoops will create more drag, an actual hood vent (you see these types of hoods with holes behind a "bump" and has no scoops above the holes) would actually use the vaccum created by the airflow over the bumps to vaccum out heat.

I leave my hood vents open in the summer and block them during the winter.
__________________
civic_matic_00 is offline   Reply With Quote
Old 06-14-2008, 10:48 PM   #15
Registered Member
 
Join Date: May 2008
Posts: 2
Country: United States
I know this sounds odd, but if you want hot air to rise up and out, why not put them on backwards? Thus avoiding some of the aero drag. Air goes in at radiator, through engine compartment and up and out the vents.
GasSavers_Eric is offline   Reply With Quote
Old 06-14-2008, 11:02 PM   #16
Registered Member
 
civic_matic_00's Avatar
 
Join Date: May 2008
Posts: 101
Country: United States
Quote:
Originally Posted by Eric View Post
I know this sounds odd, but if you want hot air to rise up and out, why not put them on backwards? Thus avoiding some of the aero drag. Air goes in at radiator, through engine compartment and up and out the vents.
I think that's a good idea. the scoops in turn become hood vents.
__________________
civic_matic_00 is offline   Reply With Quote
Old 06-15-2008, 01:46 PM   #17
Registered Member
 
Join Date: Jun 2008
Posts: 123
Country: United States
Quote:
Originally Posted by holypaulie View Post
I'm thinking to cut holes in my hood and instal these hood vents http://cgi.ebay.com/ebaymotors/JDM-U...spagenameZWDVW. Where is the best spot on hood for these kind of vents? Is it worth to do this modification?
good plan make sure you get real vents
COMP is offline   Reply With Quote
Old 06-18-2008, 01:00 PM   #18
Registered Member
 
holypaulie's Avatar
 
Join Date: Jan 2007
Posts: 108
Country: United States

I think I go will this kind of hood vent. It will the the cheapest hood vent to make and the most effective. Check this out ...http://www.240sx.org/links/installs/hood/hood.htm
holypaulie is offline   Reply With Quote
Old 06-18-2008, 01:10 PM   #19
Registered Member
 
Join Date: Jun 2008
Posts: 123
Country: United States
that works
COMP is offline   Reply With Quote
Old 06-18-2008, 01:25 PM   #20
Registered Member
 
Join Date: Jun 2008
Posts: 3
Country: United States
You could also put some spacers where your hood attaches to your car. This will raise your hood near the windshield and allow some of the hot air to escape. I've seen drifters use this technique because of the extra heat from their turbos.
It's real cheap (just cost of spacers) and easy to do (& easily reversable if you don't like it).
__________________

GasSavers_MrBig is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Assembled EFIE GasSavers_andyj For Sale 0 11-24-2007 04:49 PM
Fridge open for 6 years GeekGuyAndy Automotive News, Articles and Products 44 09-08-2007 12:12 AM
AIR CAR. Motors run on compressed air. GasSavers_RickyD General Fuel Topics 24 06-22-2007 10:17 AM
Arggg.... Hooray For Proprietary Fluids! trebuchet03 General Discussion (Off-Topic) 2 05-08-2007 10:03 AM
I issue a challenge!!! Matt Timion General Discussion (Off-Topic) 32 01-29-2006 05:28 PM

» Fuelly iOS Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 10:54 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.