Grille block in Phoneix AZ summers - Page 2 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 08-20-2008, 04:43 PM   #11
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Quote:
Originally Posted by alanchap View Post
I drive a lot for work in stop and go on the freeway and on surface streets.
It probably won't help you. Grille blocking helps in two ways: By increasing air temperature under the hood (and therefore increasing intake air temperature), and by reducing aerodynamic drag at the grille. It's already hot enough where you live, and the type of driving you describe isn't heavily affected by aerodynamic improvement.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 08-20-2008, 10:08 PM   #12
Registered Member
 
alanchap's Avatar
 
Join Date: Aug 2008
Posts: 12
Country: United States
Thanks for all the information. I am not sure how I will proceed with this for now. I do drive on I-10 for 30 miles on the way to work and home. Depending on when I get my lazy rear out of bed I can beat traffic and cruise to work at 65mph or sleep in and go 20mph for 5-7 miles of the trip. I also drive to Tucson (120miles), Yuma (160miles) and Flagstaff(150 miles) on a regular basis. So if I can overcome the heat issue I do think the the aero mod will be worth the effort.

I was looking at the car some tonight and it looks like most of the air for the radiator on the scion comes from the lower grilles, there are three openings. So partially blocking the top one and possible the bottom one should be ok and still get plenty of air to the radiator.

I am going to get a ScanGauge before I do anything to monitor the temps while I am driving to see create a baseline to work from. Also this will help me see if there is anything in my driving 'style' that is hurting me.

Again thanks for all the info, I will post what I do in the future.

Alan
__________________

alanchap is offline   Reply With Quote
Old 08-23-2008, 08:29 PM   #13
Registered Member
 
alanchap's Avatar
 
Join Date: Aug 2008
Posts: 12
Country: United States
I spent some time today under the hood of the scion replacing the air filter and spark plugs. I noticed that they upper 'grille' on the scion is actually blocked. The grille goes no where. The two lower ones are where the radiator is. I also looked at the lowers and think that I could block about 1/3 of each and still get plenty of air to the radiator.

Here is what the grille looks like stock. (yes I am missing a piece in the lower part)


And this is what I could block and not affect any of the radiator access.


From there I will start to slowly block more grille and see how it affects temps.

I am also thinking about a way to make the upper grille smooth, not sure if that would help with aerodynamics but I think it would look better. I also want to get ride of the dB badge that someone put on the grille instead of the xB one that belongs there.

When I get going I will take more pictures.

Alan
alanchap is offline   Reply With Quote
Old 08-26-2008, 08:37 AM   #14
Registered Member
 
Join Date: Nov 2007
Posts: 135
Country: United States
I have been looking at the same thing recently. If you look carefully the radiator is about 1/2 the lower grille width (or less) and offset to one side. So *in theory* you could block a fair amount before it actually affected air into the radiator significantly.

Also while you're looking you may want to see if there are any other holes in the radiator core support that is allowing air to get into the engine compartment without passing through the radiator. If so this is just wasted air that could be cooling your engine. Block up those holes for a (probably small) cooling improvement.

Lastly you could build ducting like was said above to force the air from the grille to pass directly into the radiator without just generally blowing around behind the bumper.
__________________

Think inside the Box!
Improbcat is offline   Reply With Quote
Old 08-26-2008, 04:16 PM   #15
Registered Member
 
alanchap's Avatar
 
Join Date: Aug 2008
Posts: 12
Country: United States
I see what you are saying. I may remove the bumper cover to see what is really back there and see if it would be possible to build something to 'guide' the air to the radiator.
alanchap is offline   Reply With Quote
Old 08-27-2008, 09:18 PM   #16
Registered Member
 
trautotuning's Avatar
 
Join Date: Jan 2008
Posts: 135
Country: United States
I say cover the middle first, and work your way outwards.

Why?

It is more aerodynamic in the middle than direct air towards the wheels and to the sides. It will provide more cooling than letting air in through the middle because there are hood latches and most likely vertical beams connecting the frame and engine cradle right there.

Anyway, here in Fort Worth in 100% city driving at around 96-98F my engine temps have not gone up at all... IT's all good 99% of radiators are oversized anyway.
__________________

__________________
trautotuning 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
Tires - How Narrow Should I Go? Vladi General Fuel Topics 8 05-28-2008 01:29 PM
98-04 Regal GS Aero mods ophidia31 Aerodynamics 2 05-24-2008 04:49 PM
New Low Cost Solar Panels Ready for Mass Production cfg83 Automotive News, Articles and Products 6 09-25-2007 11:04 AM
Yeah wont be driveing for a while Hockey4mnhs General Discussion (Off-Topic) 29 04-09-2007 07:29 PM
DIY: Trim Painting SVOboy Experiments, Modifications and DIY 4 08-27-2006 11:36 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:34 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.