08-17-2011, 12:56 PM
|
#1 (permalink)
|
|
Master EcoModder
Join Date: Mar 2009
Location: Northeast Ohio
Posts: 269
Thanks: 0
Thanked 16 Times in 16 Posts
|
Why are carmakers blocking the lower grille, not the top? (OEM active grille blocks)
( Admin Edit: split this thread off from http://ecomodder.com/forum/showthrea...aks-18528.html )
---
Around here grille blocks start at the top & work their way down. Why do you suppose OEMs have an aversion to blocking the top parts of the grille? Both Ford & GM have blocked the lower parts.
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
08-17-2011, 01:33 PM
|
#2 (permalink)
|
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
Quote:
Originally Posted by DonR
Around here grille blocks start at the top & work their way down. Why do you suppose OEMs have an aversion to blocking the top parts of the grille? Both Ford & GM have blocked the lower parts.
|
The Focus grill is almost entirely blocked on the top. The only real opening is the bottom (which has an actuated grill block). |
|
|
|
|
08-17-2011, 04:16 PM
|
#3 (permalink)
|
|
Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
|
Could also be a design practicality: more room to install actuators & linkages in the lower grille area.
|
|
|
|
|
08-17-2011, 07:33 PM
|
#4 (permalink)
|
|
Master EcoModder
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,246
Thanks: 24,379
Thanked 7,358 Times in 4,758 Posts
|
lower
Quote:
Originally Posted by DonR
( Admin Edit: split this thread off from http://ecomodder.com/forum/showthrea...aks-18528.html )
---
Around here grille blocks start at the top & work their way down. Why do you suppose OEMs have an aversion to blocking the top parts of the grille? Both Ford & GM have blocked the lower parts.
|
When all the loose Wal Mart plastic bags clog the fake grille underneath the engine will still have a source for cooling and combustion air. |
|
|
|
|
08-18-2011, 08:36 AM
|
#5 (permalink)
|
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,907
Thanks: 3,475
Thanked 2,950 Times in 1,844 Posts
|
Most of the upper grill on the Honda Fit is blocked.
|
|
|
|
|
08-18-2011, 09:27 AM
|
#6 (permalink)
|
|
Drive less save more
Join Date: Jul 2011
Location: Vancouver Island, Canada
Posts: 1,189
Thanks: 134
Thanked 162 Times in 135 Posts
|
On my car I will be blocking the bottom, the top is only slightly higher then the bottom grill. There is more rad surface area behind the top grill as the bottom grill is partially lower then my radiator.
__________________
Save gas
Ride a Mtn bike for errands exercise entertainment and outright fun
__________________
|
|
|
|
|
08-18-2011, 01:13 PM
|
#7 (permalink)
|
|
Master EcoModder
Join Date: Jan 2010
Location: Independence, KY
Posts: 603
Thanks: 89
Thanked 47 Times in 44 Posts
|
I assume on of the reasons is to help keep the air coming into the engine cooler for performance reasons and not FE.
__________________
 I move at the speed of awesome.
"It's not rocket surgery!" -MetroMPG
|
|
|
|
|
08-20-2011, 02:07 AM
|
#8 (permalink)
|
|
Drive less save more
Join Date: Jul 2011
Location: Vancouver Island, Canada
Posts: 1,189
Thanks: 134
Thanked 162 Times in 135 Posts
|
After thinking about it diesel cars run cool,my car is a diesel..
I need a better plan then blocking the bottom grill.After a bit more consideration i have deduced that the air going off the bottom blocked grill would either go under the car or against then into the top grill. That can't be much of a improvement. With the top grill blocked the air stands a chance of joining in with the main air flow, that sounds like more of a improvement.
__________________
Save gas
Ride a Mtn bike for errands exercise entertainment and outright fun
__________________
|
|
|
|
|
08-20-2011, 02:52 AM
|
#9 (permalink)
|
|
EcoModding Lurker
Join Date: Jul 2011
Location: Yakima Valley, WA
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
|
TIC, I'll take a SWAG at it. Assuming they are blocking the grill from the bottom up. Maybe they are assuming that the air next to the ground is hotter than air above it. No, really, on a hot day the air closest to the heat source (asphalt) is going to have more heat content than air just 18" above the asphalt. Lots of hand waving in this assumption but...
|
|
|
|
|
08-20-2011, 09:34 AM
|
#10 (permalink)
|
|
EcoModding Alien Observer
Join Date: Mar 2008
Location: I flitter here and there
Posts: 547
Thanks: 6
Thanked 78 Times in 65 Posts
|
The real big WHY.
WHY do many of the newer cars have these BIG aggressive looking openings in the front?
Most of them are simply painted black to look like openings?
Stylistic hell.....?
Halloween is coming? The PUMPKIN look?
__________________
Carry on humans...we are extremely proud of you. .................. 
Forty-six percent of Americans believe in the creationist view that God created humans in their present form at one time within the last 10,000 years. GALLUP POLL 
|
|
|
|
|
