Aeromods - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
All about MPG All about maximizing your Miles Per Gallon (MPG)

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post #1 of 16 (permalink) Old 11-24-2011, 03:00 AM Thread Starter
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Aeromods

Has anyone done any aeromods and have pictures?
I'm interested to see how they're done

in a week or two it'll be a constant temp of below 40 degrees till February/March
So i've considered an upper grill block and partial if not full lower grill block

and i saw a guide on a different car of creating a sheet from the bumper to the frame to create a smooth flow under the car

I know not to expect much but in a little less than a month i'll be driving 1200 miles so every bit makes a difference
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post #2 of 16 (permalink) Old 11-28-2011, 02:43 PM
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Here is my aero mod thread.
Havn't done much yet but do have plans for more this winter.
Heated garage FTW.

Fr3AkAzOiD's Cobalt XFE Aero Mods - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

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post #3 of 16 (permalink) Old 11-28-2011, 02:52 PM
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^ you do know ecotecs run hot and 217 is a normal temp? 235+ is where you get worried lol
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post #4 of 16 (permalink) Old 11-30-2011, 07:58 PM
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Yea but once it hits 217F the electric fan turns on which in turn makes the alternator work harder and increases parasidic drag on the engine thus reducing your mpg.

One trick some have done with older cars is put in a higher temp thermostat.
Havn't looked into the possibility of that to see if that is even possible with Cobalts though.

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post #5 of 16 (permalink) Old 12-15-2011, 04:30 PM
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I did a skid plate/aero mod to the underside of my car.
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post #6 of 16 (permalink) Old 12-27-2011, 12:51 PM Thread Starter
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I did a skid plate/aero mod to the underside of my car.
Nice! i saw that one done on a different car could you give me some info on what you used and how you did it? i'd like to have it for the aero and for when a parking space is inclined and the sidewalk inmfront of it is inclined the opposite way and my frame/bumper catches the edge of the sidewalk (happened more than once in my travels)

---------- Post added at 02:51 PM ---------- Previous post was at 02:49 PM ----------

Also,i've been getting 32-35 without any mods so far so i'll be sure to keep notes on the change the only reason i got 32 on this last run is that there was a lot of wind fighting me,storms,and traffic and i've been procrastinating the oil change
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post #7 of 16 (permalink) Old 01-01-2012, 11:51 AM
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I purchased a sheet of ABS plastic that is 3/16" thick and 32" wide by 48" long From "http://www.tapplastics.com/shop/product.php?pid=335" The sheet of ABS plastic shipped was ~$80.]

I should also mention this is for a 2010 XFE cobalt 5 speed and has no A/C. So you might have different clearances if you're gonna put your own in.

I was able to tap four holes on the frame so no drilling! I then used seven other zip ties that went threw existing holes and the cross bar under the radiator.

Where the skid plate and the air dam meet I plan on riveting some right angle plastic holders (similar in what you use for cheap book shelves) to help give the skid plate some support in the very front of it.

To tell you the truth I really haven't noticed a big difference in MPGs but it is nice to have something protect the radiator from things underneath. ex. rabbits, large ice chunks and road grime.

I'd also recommend trying to use as mush stainless steel or aluminum fittings so that you don't have to worry about much rustiness.

Last edited by Black; 01-01-2012 at 12:02 PM.
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post #8 of 16 (permalink) Old 01-01-2012, 04:42 PM Thread Starter
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Quote:
Originally Posted by Black View Post
I purchased a sheet of ABS plastic that is 3/16" thick and 32" wide by 48" long From "http://www.tapplastics.com/shop/product.php?pid=335" The sheet of ABS plastic shipped was ~$80.]

I should also mention this is for a 2010 XFE cobalt 5 speed and has no A/C. So you might have different clearances if you're gonna put your own in.

I was able to tap four holes on the frame so no drilling! I then used seven other zip ties that went threw existing holes and the cross bar under the radiator.

Where the skid plate and the air dam meet I plan on riveting some right angle plastic holders (similar in what you use for cheap book shelves) to help give the skid plate some support in the very front of it.

To tell you the truth I really haven't noticed a big difference in MPGs but it is nice to have something protect the radiator from things underneath. ex. rabbits, large ice chunks and road grime.

I'd also recommend trying to use as mush stainless steel or aluminum fittings so that you don't have to worry about much rustiness.
Nice,well it really won't be a huge difference it's really alot of little things that add up,i must say it does look clean i'll probably be looking to make something different with a little lower price tag
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post #9 of 16 (permalink) Old 01-01-2012, 06:13 PM
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Next time elections come around pick up some signs on voting night.

I have about 6 - 10 sheets of 4ft by 8ft corrugated plastic signs above my garage waiting for me to get off my lazy butt to do something with them.

I would just watch out for the exhaust as the plastic signs will melt at a much lower temp then the ABS stuff Black used.

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post #10 of 16 (permalink) Old 01-02-2012, 02:12 PM Thread Starter
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Next time elections come around pick up some signs on voting night.

I have about 6 - 10 sheets of 4ft by 8ft corrugated plastic signs above my garage waiting for me to get off my lazy butt to do something with them.

I would just watch out for the exhaust as the plastic signs will melt at a much lower temp then the ABS stuff Black used.
Thanks for that idea,i'll be on the lookout
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