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Re: Purpose of Motor Covers? [Re: Kestas] #5209677 09/10/19 09:13 PM
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Mad_Hatter Offline
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Originally Posted by Kestas
Considering the troubling trend of tight underhood space and designers having more trouble trying to shed heat from the engine, and specifying more heat resistant materials, cars would be better off without these covers.

My sentiments exactly ๐Ÿ‘

Re: Purpose of Motor Covers? [Re: 02SE] #5209697 09/10/19 09:58 PM
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CR94 Offline
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Originally Posted by 02SE
As mentioned sound suppression and aesthetics for the majority of the general public that don't know anything about engines, and just like the 'finished look' a cover provides.
They're also less expensive than giving the actual valve cover a "finished look," as some manufacturers used to do.


2011 Toyota Prius now at 109K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Purpose of Motor Covers? [Re: tc1446] #5209716 09/10/19 10:57 PM
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sloinker Offline
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I've seen a few new cars recently that have foregone the covers. May be a new trend.


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Re: Purpose of Motor Covers? [Re: tc1446] #5209743 09/11/19 01:16 AM
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wemay Online Happy
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I was in the "it's only for aesthetics camp too..."

"In cooler climates it helps warm up the engine faster. In hotter climates it helps dissipate heat from the hood to protect the paint, even if spec'd with an under hood lining."

This is what I was told by a KIA service tech when he noticed I had removed mine. Not sure I totally buy it but if I get hood paint issues while under warranty, I don't want to give anyone an easy "out". So for now it's back on.


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Re: Purpose of Motor Covers? [Re: tc1446] #5209745 09/11/19 01:30 AM
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Aerodynamics. Help lower the coefficient of drag. Less turbulent air under the hood coming in from the grill at high speeds. No manufacturer will waste money on anything underneath the hood unless it increases MPG

Re: Purpose of Motor Covers? [Re: Kestas] #5209815 09/11/19 05:28 AM
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Originally Posted by Kestas
When I worked for one of the auto manufacturers in the 80s, they had a task force called the Underhood Appearance Group, making sure the parts manufactured didn't look too odd when the hood is lifted. They didn't like the Prussian blue used on the cast aluminum master cylinders being built. It was there for crack detection during manufacture.
I guess they gave up and just went with an engine cover.
For two cars in my stable I took the engine covers off and put them on the shelf. They'll go back on when I sell the car.
Considering the troubling trend of tight underhood space and designers having more trouble trying to shed heat from the engine, and specifying more heat resistant materials, cars would be better off without these covers.

Didn't Bill Alexander recommend using Alizarin Crimson instead?
;^)
He was the guy who taught Bob Ross how to paint, went from being a German POW in WWII to having a PBS painting show.
I remember him hollering exuberantly about spreading his magic vhite on the canvas with ein grossus brush!
I always wondered if he favored Prussian Blue because of his ancestry...


2014 Forester XT, 111000 miles
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Re: Purpose of Motor Covers? [Re: tc1446] #5209925 09/11/19 07:43 AM
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On our Fusion, the noise difference with it on vs off is substantial.

I think it looks 100% better with it on too.

Re: Purpose of Motor Covers? [Re: tc1446] #5209933 09/11/19 07:50 AM
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They reduce noise, keep the top of the engine cleaner, protect any wires and lines, and clean up the looks. It will depend on the manufacturer as well.


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Re: Purpose of Motor Covers? [Re: sloinker] #5209997 09/11/19 09:19 AM
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Originally Posted by sloinker
I've seen a few new cars recently that have foregone the covers. May be a new trend.


The new Ford Rangers only have them on the Lariat. Ford even issued a SSM stating that ordering one for a non Lariat was unwarrantable and claims would be denied. Guess what sales came in demanding had to be covered under warranty...


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Re: Purpose of Motor Covers? [Re: tc1446] #5210001 09/11/19 09:26 AM
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The engine covers on the GTO where know to cut the fuel line on the driver's side, so most folks took them off. IMHO most covers are for aesthetic reasons, except for VW they mount the fuse box on top of the plastic battery cover.

Last edited by Gimpy1; 09/11/19 09:27 AM.
Re: Purpose of Motor Covers? [Re: Reddy45] #5210043 09/11/19 10:30 AM
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Originally Posted by ctechbob
Lets people that care about cars know that you gave a flip during your ownership to keep up with them when they're looking at buying your used car?

I actually used that as a measure when I bought my TL. 8 times out of 10 the battery cover is missing and that was actually a turn off when I was looking.


PFFFTTtttt ........ Most Acura TL owners are 100% unaware their car ever had a battery cover.


Originally Posted by Reddy45
It's 1 additional thing for the mechanic or body shop to forget to install.


+ 1,000% !!!!!!!!


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Purpose of Motor Covers? [Re: tc1446] #5210094 09/11/19 11:20 AM
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I'd say the engine covers are for cosmetics and the foam is for sound deadening. Some of the late model Mustang V8s don't have an engine cover, which surprises me not only because it is Ford's flagship sports model, but also because they look terrible underhood with various hard lines and hoses and wires running all over the place. But whatever, they still sell like hotcakes.


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Re: Purpose of Motor Covers? [Re: tc1446] #5210233 09/11/19 02:20 PM
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I think depending on the manufacturer and engine design it can be used for sound deadening, especially in direct injection motors. Ford has done this, Lexus, several others. Other times I think it's just for looks, and like someone else said...to deter someone from works on the car. Honestly I've worked on some cars where removing the covers were worse than working on the engine itself.


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2008 Honda CRV
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Re: Purpose of Motor Covers? [Re: tc1446] #5210239 09/11/19 02:23 PM
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Cosmetic

Re: Purpose of Motor Covers? [Re: tc1446] #5210674 09/12/19 05:27 AM
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Hide the mess of wires, fuel lines, etc. etc. It also minimizes dust accumulation, provides some sound deadening (sound deadening material can be held in place between the cover and the engine).

Last edited by BMWTurboDzl; 09/12/19 05:28 AM.

โ€œIt took untold generations to get you where you are. A little gratitude might be in order. If youโ€™re going to insist on bending the world to your way, you better have your reasons.โ€

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