Grill Block position? - Fuelly Forums
Go Back   Fuelly Forums > Fuel Talk > Aerodynamics
Search Today's Posts Mark Forums Read
Thread Tools Display Modes
Old 04-28-2007, 07:33 AM   #1
Registered Member
Join Date: Oct 2006
Posts: 245
Country: United States
Grill Block position?

I currently have mine on inside. was getting a lil wavy so i cut a new piece of cardboard and covered it with some vinyl flashing and zip tied it on. has anyone had gthere on inside and then moved to otside and noticed any difference?? i'm thnking that maybe on inside it might be catching air instead of pushing it around the car.

"Sylvie" 2000 Honda Insight 5 Speed

LxMike is offline   Reply With Quote
Old 04-28-2007, 03:04 PM   #2
Registered Member
Join Date: Mar 2007
Posts: 1,138
Country: United States
I think theoretically it would be better on the outside, but the difference is probably immeasurable.

Bill in Houston is offline   Reply With Quote
Old 04-28-2007, 03:06 PM   #3
Registered Member
trebuchet03's Avatar
Join Date: Mar 2007
Posts: 812
Country: United States
Send a message via AIM to trebuchet03
Originally Posted by Bill in Houston View Post
I think theoretically it would be better on the outside, but the difference is probably immeasurable.
Ditto - less stagnation on the outside, but given a small surface area - you're likely not to notice Then again, there's no one thing that makes a complex shape aerodynamic (other than a teardrop shape) - it's a combination of a lot of little (and likely subtle) things
Time is the best teacher. Unfortunately it kills all its students.

Bike Miles (Begin Aug. 20 - '07): ~433.2 miles

trebuchet03 is offline   Reply With Quote
Old 04-28-2007, 07:02 PM   #4
Registered Member
Peakster's Avatar
Join Date: Sep 2006
Posts: 467
Country: United States
I would think that placing the grille block flush with the exterior would be best.

BTW, I didn't find any Aero improvement with my grille block, however, the warmup times are shortened greatly.
Peakster is offline   Reply With Quote
Old 04-30-2007, 06:28 AM   #5
Registered Member
brucepick's Avatar
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
My solution is halfway between in front and behind.
I got a few lengths of foam pipe insulation from Lowe's or Home Depot. Inserted the foam in the grill slots.

Every third slot is only partially filled with foam to let some air in. When the weather warms up for real I'll experiment with adding or deleting foam from slots.

My grill has about 1/2 inch splaces between vertical grill slats (see avatar). I sealed the self-sealing slice in the foam insulation to make it a tube, then squished that flat and stuffed it into the slots. YMMV due to whatever width your grill slots and foam insulation are.
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote

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
View model averages? unicrombie Fuelly Web Support and Community News 4 11-09-2011 06:32 AM
HF to SI tranny swap complete, questions about tire size... white90crxhf General Fuel Topics 1 08-20-2006 06:46 PM
Gas Log? GasSavers_Kraig General Discussion (Off-Topic) 3 08-16-2006 01:21 AM
Got stopped by the police ... MetroMPG General Discussion (Off-Topic) 14 08-05-2006 06:04 AM
Toyota Grand Prius krousdb Automotive News, Articles and Products 5 07-26-2006 02:44 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 12:28 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.