Air Dam Removal - JeepForum.com
 
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post #1 of 9 Old 09-10-2009, 07:01 PM Thread Starter
liquidean
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Air Dam Removal

Does anyone know if it is o.k. to cut off that metal bar that is exposed after taking the air dam off? The one that is located about where the bottom of the air dam was. Or is it crucial to the support of the frame?

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post #2 of 9 Old 09-10-2009, 07:49 PM
ronjenx
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It's called a COMPATIBILITY BEAM
It doesn't have much structural value beyond its purpose for being there, which is Jeep's requirement to have something there to be more in line with the bumpers of smaller vehicles, to mitigate the Jeep's tendency to climb over low hoods and go through windshields in an accident.

It could be argued that it has some structural value since it is a welded in place cross member. But, the cross frame tube is right behind it, and the bumper's metal core is bolted on just ahead of it.

Last edited by ronjenx; 09-10-2009 at 08:06 PM.
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post #3 of 9 Old 09-11-2009, 04:46 AM
GPV
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Go off road for a bit it will fall off on it's own. Why bother taking the metal brace off? Leave it there and don't worry about it.

Sean

2008 Jeep JK Rubicon Unlimited (Bought for Wife)
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post #4 of 9 Old 09-11-2009, 11:32 AM
4x4jkx
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I left the metal brace there. It works great as a poor mans rock guard. Saved my engine probably once or twice. You can't even really see it unless you're looking for it.
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post #5 of 9 Old 09-11-2009, 11:53 AM
ronjenx
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Quote:
Originally Posted by 4x4jkx View Post
I left the metal brace there. It works great as a poor mans rock guard. Saved my engine probably once or twice. You can't even really see it unless you're looking for it.
Good point!
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post #6 of 9 Old 09-11-2009, 12:12 PM
McKBrew
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Any negative impacts from removing this other than the hood bounce getting worse like I've read about. Mine is tie wrapped on in a few spots now, and if it isn't going to cause any major issues, I'd like to rip it off.
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post #7 of 9 Old 09-11-2009, 02:05 PM
ronjenx
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Quote:
Originally Posted by McKBrew View Post
Any negative impacts from removing this other than the hood bounce getting worse like I've read about. Mine is tie wrapped on in a few spots now, and if it isn't going to cause any major issues, I'd like to rip it off.
Referring to the plastic air dam?
Removing the plastic air dam may cause hood lift, like you said. It also may reduce the cooling capacity of your raditor, as removing it will raise the air pressure under the hood. Less air will flow through the radiator. This is not a factor, unless you're under enough of a load (towing, for example) to be on the edge of the radiator's ability to provide cooling.

Lots of people have removed theirs without noticing any ill effects.
I took mine off and installed the MOPAR front skid plate. As far as air flow is concerned, it performs like the plastic air dam. It also protects underneath the front of the vehicle, unlike the plastic one.
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post #8 of 9 Old 09-11-2009, 02:33 PM
Dmrennells
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The airdam may help on the highway, but it does little for slower speeds(offroading). i removed it last year. it kept collecting the slush/salt mixture. saw no issues with overheating during summer. if you are afraid of hood-bounce, remove the hood lift assist spring.

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post #9 of 9 Old 09-11-2009, 03:12 PM
1398653
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I just ripped of the plastic thing and installed the Skid Row Skid Plate. It was really easy, looks good and my gas mileage is the same and no hood bounce. I wouldnt take the metal bar if I were you. The skid row plate was only 70 bucks.

Steve, Olean NY, 2004 TJ Rubicon & 2006 LJ Unlimited
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