Opening Hood for Cool Down a Good Idea?
05-07-2007, 11:16 AM
#21
5th Gear Member
Join Date: Apr 2005
Location: Babylon, NY
Posts: 3,031
RE: Opening Hood for Cool Down a Good Idea?
HMmmmmm! A fiberglass Saleen heat extractor hood.............you just got my attention.
Where can I get one,
Where can I get one,
05-07-2007, 11:34 AM
#22
2nd Gear Member
Join Date: Apr 2007
Location:
Posts: 183
RE: Opening Hood for Cool Down a Good Idea?
Actually (didn't read everyone else's post) the Saleen hood does not have ANY heat extractors. I bought one from a collision shop next door for 25 bucks...yea i kno..kick *** deal right? lol. Anyways, The chrome vents were not in it, so I decided to cut open a $800 dollar hood. 
I cut the sections out where the vents would be on the Saleen and mount mesh to the bottom of it to actually extract the heat. Also, when my No2 kit comes in, my Dual purge will be out of each vent for a pretty sick effect...
all in all after all that bs i just said...it is not a bad idea to open ur hood.
I cut the sections out where the vents would be on the Saleen and mount mesh to the bottom of it to actually extract the heat. Also, when my No2 kit comes in, my Dual purge will be out of each vent for a pretty sick effect...all in all after all that bs i just said...it is not a bad idea to open ur hood.
05-07-2007, 11:40 AM
#23
3rd Gear Member
Join Date: Jul 2006
Location: Chicago (South Loop)
Posts: 685
RE: Opening Hood for Cool Down a Good Idea?
According to Ford, the S-197 was purposely designed to cool down very slowly. We have an aluminum block, NOT an iron one, and aluminum is FAR more sensitive to rapid cooling than its iron counterpart. Ford has done numerous studies showing it is far better to let it cool slowly than quickly, less chance of microscopic cracks etc. appearing in the block which will cause loss of power. If I can find the article that quotes the lead engineer saying this, I will post it, but believe me, this was done on purpose. Same as it taking forever for the revs to drop...makes it easier for newbies to shift manually, meaning less wear and tear on the clutch and on the engine, etc. Purposefully designed that way.
Perhaps these ideas aren't the best from a performance standpoint, but for reliability among the masses, particularly since most people are idiots, it's a great idea.
Perhaps these ideas aren't the best from a performance standpoint, but for reliability among the masses, particularly since most people are idiots, it's a great idea.
05-07-2007, 11:52 AM
#24
5th Gear Member
Join Date: Apr 2005
Location: Babylon, NY
Posts: 3,031
RE: Opening Hood for Cool Down a Good Idea?
particularly since most people are idiots, it's a great idea.
05-07-2007, 11:56 AM
#25
6th Gear Member
Join Date: Jan 2007
Location: Southeast Virginia
Posts: 6,409
RE: Opening Hood for Cool Down a Good Idea?
So why did Ford put a cast iron engine in the V6?
After a drive I don't open my hood, but I let the front end cool down before I put my car cover back on.
I honestly don't think the designers meant for us to open the hood up every time we drive to cool down. Maybe after a loooooong cruise or something, but just for around town I don't see it.
After a drive I don't open my hood, but I let the front end cool down before I put my car cover back on.
I honestly don't think the designers meant for us to open the hood up every time we drive to cool down. Maybe after a loooooong cruise or something, but just for around town I don't see it.
05-07-2007, 12:25 PM
#26
5th Gear Member
Join Date: Jun 2006
Location: Sterling Heights, MI
Posts: 3,792
RE: Opening Hood for Cool Down a Good Idea?
Seems pointless to open the hood to cool down your hot engine. I do it at the track for performance sake only. But if your looking for an excuse to get a hood thats different... go for it.
05-07-2007, 03:36 PM
#27
3rd Gear Member
Join Date: Jul 2006
Location: Chicago (South Loop)
Posts: 685
RE: Opening Hood for Cool Down a Good Idea?
ORIGINAL: 07 Stang
So why did Ford put a cast iron engine in the V6?
After a drive I don't open my hood, but I let the front end cool down before I put my car cover back on.
I honestly don't think the designers meant for us to open the hood up every time we drive to cool down. Maybe after a loooooong cruise or something, but just for around town I don't see it.
So why did Ford put a cast iron engine in the V6?
After a drive I don't open my hood, but I let the front end cool down before I put my car cover back on.
I honestly don't think the designers meant for us to open the hood up every time we drive to cool down. Maybe after a loooooong cruise or something, but just for around town I don't see it.
the point is, they designed the engine to cool down slowly in order to prevent cracks from cooling too quicly since it's an aluminum block.
05-07-2007, 06:12 PM
#28
4th Gear Member
Join Date: Dec 2006
Location:
Posts: 1,209
RE: Opening Hood for Cool Down a Good Idea?
Hmm...I don't know that I'd really want to use a heat extracting hood.
Believe it or not, your motor can actually be suffering loss of power from loss of heat. NASCAR guys use duct tape to control the amount of airflow over the engine, thus making the car run hotter. This is a known fact for most circle racers and oval racers.
http://sportsillustrated.cnn.com/mot...ascar_knowhow/
Believe it or not, your motor can actually be suffering loss of power from loss of heat. NASCAR guys use duct tape to control the amount of airflow over the engine, thus making the car run hotter. This is a known fact for most circle racers and oval racers.
http://sportsillustrated.cnn.com/mot...ascar_knowhow/
05-07-2007, 09:40 PM
#29
3rd Gear Member
Thread Starter
Join Date: Nov 2006
Location: New Jersey
Posts: 983
RE: Opening Hood for Cool Down a Good Idea?
ORIGINAL: imyy4u
According to Ford, the S-197 was purposely designed to cool down very slowly. We have an aluminum block, NOT an iron one, and aluminum is FAR more sensitive to rapid cooling than its iron counterpart. Ford has done numerous studies showing it is far better to let it cool slowly than quickly, less chance of microscopic cracks etc. appearing in the block which will cause loss of power.
According to Ford, the S-197 was purposely designed to cool down very slowly. We have an aluminum block, NOT an iron one, and aluminum is FAR more sensitive to rapid cooling than its iron counterpart. Ford has done numerous studies showing it is far better to let it cool slowly than quickly, less chance of microscopic cracks etc. appearing in the block which will cause loss of power.
The effect of a faster cool down from popping my hood when it's 80 degrees (or hotter!) outside is not nearly as drastic as just parking your car outside in sub-zero winter temperatures with the hood closed.
If your theory was correct, then our engine blocks would be subject to hairline cracks merely by parking these cars outside in ice-cold weather!
Just doesn't make much sense if you think about it..........
