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Unread 06-12-2010, 06:41 AM   #1
flex71
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hood vents 5.9

Are the hood vents funcational on the 5.9 Grand

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Unread 06-12-2010, 07:15 AM   #2
Apollo21
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yes

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Unread 06-12-2010, 07:56 AM   #3
flex71
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any pics of the under side of the hood , I just got a white 5.9 and they look like fake vents. pics please
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Unread 06-12-2010, 07:59 AM   #4
flex71
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the 5.9 i just got looks like it has a newer hood with the vents but they dont seem to be right.
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Unread 06-12-2010, 08:16 AM   #5
soul_Less
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the stock ones are functional, they dont suck in air though. the cold moving air passes over and draws out the hot engine bay air, think of the way the sunroof works.
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Unread 06-12-2010, 08:47 AM   #6
comptiger5000
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They don't look functional from the underside, but they are. They have drip trays on them to guide water out to the edges of the engine bay. Those plastic trays don't extend all the way up to the hood, so air is drawn through above them.
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Unread 06-14-2010, 07:30 AM   #7
flex71
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any one with 5.9 hood vents have a pic of the underside of the hood please post, I think thats the only way for me to know if mine are legit or not.
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Unread 06-14-2010, 07:49 AM   #8
PurpleZJ
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post a pic of yours and we can tell you more
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Unread 06-14-2010, 10:05 AM   #9
flex71
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I will try to take pic tonight and post , I just got this ZJ and I love the look and raw power, but it dont have the pep of my XJ. I want to improve performance with out losing MPG , is that possible , then some new rims and tyers it has some 20" rims with low profile tread not realy my thing. Ideas , thoughts all welcome ,
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Unread 06-14-2010, 11:19 AM   #10
sadass
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Quote:
Originally Posted by flex71 View Post
any pics of the under side of the hood , I just got a white 5.9 and they look like fake vents. pics please
They are functional!


When you lift the hood , this is all you will see .

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Unread 06-14-2010, 01:15 PM   #11
soul_Less
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Quote:
Originally Posted by flex71 View Post
I will try to take pic tonight and post , I just got this ZJ and I love the look and raw power, but it dont have the pep of my XJ. I want to improve performance with out losing MPG , is that possible , then some new rims and tyers it has some 20" rims with low profile tread not realy my thing. Ideas , thoughts all welcome ,
You're 5.9L doesnt have pep? Gas pedal is on the right
According to my performance vs. mileage scale, you sacrifice one for the other..

And as for the rims just sell 'em and you'll have a healthy budget for new rims and tires
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Unread 06-14-2010, 05:11 PM   #12
flex71
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My hood must be a fake!








Last edited by flex71; 06-14-2010 at 05:21 PM.. Reason: more pics
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Unread 06-14-2010, 06:18 PM   #13
KDOG2008
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Interesting thread.... I'm interested in hood vents due to the heat soak issue with my 4.0L. Are there aftermarket hood vents?
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Unread 06-14-2010, 06:22 PM   #14
BlackbeastZJ
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Quote:
Originally Posted by KDOG2008 View Post
Interesting thread.... I'm interested in hood vents due to the heat soak issue with my 4.0L. Are there aftermarket hood vents?
I'm sure there are, but most ZJ guys just use the ones from a 5.9 or Pontiac Gran Prix's.
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Unread 06-14-2010, 07:32 PM   #15
flex71
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Quote:
Originally Posted by soul_Less View Post
You're 5.9L doesnt have pep? Gas pedal is on the right
According to my performance vs. mileage scale, you sacrifice one for the other..

And as for the rims just sell 'em and you'll have a healthy budget for new rims and tires
I figured out the as pedal sucked down $40 in two days, getting just over 12miles per gallon,

how can I make these vents work, any place to get the lower trays?

what about the best performance mod for the money?
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