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Old 06-19-2014, 02:56 PM   #1
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To remove 3.6 engine cover or not?

Wondering if removing the plastic engine cover would do anything to help with keeping some engine heat down on long summer road trips through the South West?

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Old 06-19-2014, 04:01 PM   #2
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I'd ditch it. Just another heat sink and more stuff in the way. Just my two cents.

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Old 06-19-2014, 04:40 PM   #3
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Engine heat isn't a bad thing up to a point. A warmer engine is a more efficient engine, so much so that Toyota wrecked their 3.0 V6 design for a while by upping engine temps to improve their CAFE numbers. This led to a recall after well-maintained engines (with under 20k miles) were seizing due to oil cooking to sludge.
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Old 06-19-2014, 07:32 PM   #4
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I was more surprised by the big chunk of foam on the side and back of the intake....wondering if there is an easy way to get it off without cutting or having to pull the intake off. That has to hold in an enormous amount of heat with the engine cover over the top.
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Old 06-19-2014, 07:42 PM   #5
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I was more surprised by the big chunk of foam on the side and back of the intake....wondering if there is an easy way to get it off without cutting or having to pull the intake off. That has to hold in an enormous amount of heat with the engine cover over the top.
I'm not familiar with that on the jeeps, but the 5.7 Hemi had that in the rear of the intake about 4" x 8" it was to reduce the noise of the air flowing through the intake, myself and a lot of other Hemi owners pulled it out, very little increase in noise and a bit lower intake temp. Enough to make a difference ? Probably not, but it's easy enough to reinstall if you need too.
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Old 06-19-2014, 08:08 PM   #6
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Mine is there in the winter and gone in the summer.
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Old 06-19-2014, 08:39 PM   #7
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Been out since first oil change and never going back in.

Looks better with it off too
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Old 06-19-2014, 10:10 PM   #8
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Been out since first oil change and never going back in.

Looks better with it off too

Ditto.
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Old 06-19-2014, 10:35 PM   #9
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Removed it right after I got the Jeep home.
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Old 06-19-2014, 11:07 PM   #10
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Just leave it on, removing it won't make any noticeable difference.
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Old 06-19-2014, 11:56 PM   #11
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Yeah i leave mine on looks are very opinionated I think it looks much better with it on personally.
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Old 06-20-2014, 12:49 AM   #12
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They put it there for a reason fellows. Its so when your head went to ticking they hoped it would muffle the sound. Didnt work. Lol

I took mine off to check everything out a couple of times. Debated on leaving it off but said screw it and put it back on.
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Old 06-20-2014, 12:52 AM   #13
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Mine is there in the winter and gone in the summer.
Good plan...I might do that myself.
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Old 06-20-2014, 02:19 AM   #14
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Lol, the dealership actually forgot it sitting around in the shop after an oil change. I didn't care to get it back for a while but when I did I never could get it back on right. So it's been off. I also live in south Texas so I can't really attest to the temperature thing. It's always hot
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Old 06-20-2014, 03:37 AM   #15
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Funny how many believe factory engineers are in the habit of spending many hours concocting how to add useless parts around the Jeep: engine cover, engine air dam, driveshaft boots, fenders, coil spring isolators, air box, steering stabilizer, wheels large enough to fit around the brake calipers,etc .

Maybe some some of the hoses and wiring in the engine compartment are just decoys.

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Old 06-20-2014, 03:43 AM   #16
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Funny how many believe factory engineers are in the habit of spending many hours concocting how to add useless parts around the Jeep: engine cover, engine air dam, driveshaft boots, fenders, coil spring isolators, steering stabilizer, wheels large enough to fit around the brake calipers,etc .

Maybe some some of the hoses and wiring in the engine compartment are just decoys.

The factory engineers never intended for this jeep to do what I am going to do with it.
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Old 06-20-2014, 03:52 AM   #17
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The factory engineers never intended for this jeep to do what I am going to do with it.
Maybe not but they were thinking about your and everyone else's including your Jeep proper and safe operation.
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Old 06-20-2014, 05:09 AM   #18
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Funny how many believe factory engineers are in the habit of spending many hours concocting how to add useless parts around the Jeep: engine cover, engine air dam, driveshaft boots, fenders, coil spring isolators, air box, steering stabilizer, wheels large enough to fit around the brake calipers,etc .

Maybe some some of the hoses and wiring in the engine compartment are just decoys.

Chrysler engineering: "Man, our new high tech engine is uglier than a monkeys ass, what can we do about it?"
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Old 06-20-2014, 05:37 AM   #19
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Mine is there in the winter and gone in the summer.
That's a good idea. Aside from attempting to hide noise I see no point in having it on. During the winter it might help with quicker warm ups, and retaining heat. In the summer it's probably useless.
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Old 06-20-2014, 07:18 AM   #20
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Quote:
Originally Posted by spinlock View Post
Funny how many believe factory engineers are in the habit of spending many hours concocting how to add useless parts around the Jeep: engine cover, engine air dam, driveshaft boots, fenders, coil spring isolators, air box, steering stabilizer, wheels large enough to fit around the brake calipers,etc .

Maybe some some of the hoses and wiring in the engine compartment are just decoys.
The engineers are forced to do these things by the government and marketing. The cover was certainly forced on them by marketing, it's very important to hide the engine from the haus frau.

Just because you don't see the purpose doesn't mean there isn't one.
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Old 06-20-2014, 10:07 AM   #21
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Most such engine covers serve two primary purposes: make the engine look neater (to some) and cancel out noise.
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Old 06-20-2014, 01:34 PM   #22
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Most such engine covers serve two primary purposes: make the engine look neater (to some) and cancel out noise.

THIS.

Aesthetics and acoustic alteration. Some motors (especially GDI ones) can create a lot of noise. It's not significant, but on my sister's 2013 Jetta GLI it's pretty noticeable if you leave it off.
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Old 06-20-2014, 03:43 PM   #23
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I took mine off to see what was under it. Then I put it back on. I like mine
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Old 06-20-2014, 03:58 PM   #24
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Thanks everyone for your thoughts. I think I will run it off for these summer trips and see what, if anything is different. Seems from the comments it's about 50/50 either way.
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Old 06-20-2014, 04:32 PM   #25
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I took mine off today and only noticed a little more noise. Nothing to lose sleep over. It was pretty hot when I took it off.
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Old 06-20-2014, 06:24 PM   #26
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Old 06-23-2014, 07:44 AM   #27
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I put mine back on after removing it. It's one less piece of Jeep in my garage.
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Old 06-23-2014, 11:04 AM   #28
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I left mine off after removing it the day I bought it. Maybe it provides some sound dampening qualities but I couldn't see any need for it, IMHO.
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Old 06-25-2014, 05:49 PM   #29
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Too?
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Old 06-25-2014, 05:59 PM   #30
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First thing to be thrown in the garbage. Next is the plastic air dam. Useless POS's!

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