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How do you get heat out?

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Old Oct 3, 2009 | 11:48 PM
  #1  
91familyxj's Avatar
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From: Las Vegas
Year: 1996 Limited
Model: Grand Cherokee
Engine: 5.2
Default How do you get heat out?

Ok so everytime I pop my hood its always hot I know it is suppose to be hot of course but I was wondering what some of you guys have done to get some of it out with out spending much money to do it. I was thinking of a cowl hood but thats like $400 also wrapping the exhaust manifold with that wrap from the store but how good it that stuff? Any ideas or pics of some stuff you guys have done? Thanks
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Old Oct 4, 2009 | 12:35 AM
  #2  
95Cherokee's Avatar
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From: Houston Tx.
Year: 1995
Model: Cherokee
Engine: 4.0
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I bought a 10x5 in. boat vent from West Marine, jig sawed a hole and screwed it on.

Vent - $7, nuts and bolts - $2

Total price - $9
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Old Oct 4, 2009 | 02:01 AM
  #3  
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From: mendocino County, CA707
Year: 91
Model: Cherokee
Engine: 4.0
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yes vents are the way 2 go! cheap easy and looks pretty kewl if you ask me



yesss sir.
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Old Oct 4, 2009 | 05:21 AM
  #4  
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From: Englandshire
Year: 1997
Model: Cherokee
Engine: 4.0
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Mine is a VM Diesel and VM diesels need to be kept cool so I decided to install a vent over the Turbo, with a 12 volt extractor fan in it.

Got a bonnet scoop of Ebay, all the way from Hong Kong, and a large 12 volt, PC case fan, rated at 38 cubic feet per min. I chose this sort of fan as it just fits amongst all the pipes and ancilaries under the hood of the TD, above the turbo, without fouling anything.

First I used a stanley knife to remove the apropriate section of sound deadaning fron the underside of the bonnet



Then I cut out a square hole with the angle grinder..... No going back now.





Bolted the heavily waterproofed fan into place



then fixed the cowl on over the fan with bathroom sealant and a bead of flexible sealant around the edge



Picked an earth up under the hood, and ran a switched live from my aux panel in the truck.

Went for a test drive, and the heat being dumped out through the vent was amazing.
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Old Oct 5, 2009 | 12:34 AM
  #5  
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From: Las Vegas
Year: 1996 Limited
Model: Grand Cherokee
Engine: 5.2
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I like the fan but that might be to much right now but love it. I think im ganna do the vents it looks sweet and will not be to much on the wallet or time. So 95cherokee you said you did 1 vent do you have any pics? So MyHeepis.rad what size vents did you use and were did you get them. Plus I was wondering about water getting in I know it shouldnt be that big of a problem but just wondering what you did.
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Old Oct 5, 2009 | 12:47 AM
  #6  
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Year: 1985
Model: Cherokee
Engine: 2.5 liter
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i saw a local guy where i live mold his own using fiberglass and a paintbrush in a cowl style, i think you can get all that at home depot
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Old Oct 5, 2009 | 04:13 AM
  #7  
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From: mendocino County, CA707
Year: 91
Model: Cherokee
Engine: 4.0
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Originally Posted by 91familyxj
So MyHeepis.rad what size vents did you use and were did you get them. Plus I was wondering about water getting in I know it shouldnt be that big of a problem but just wondering what you did.
i forget what size they are actually.. but ebay is where i got em at! i think it was about 20 bucks all together with s&h but don't quote me.. i dont worry about water really getting in when i wash her i go around the vents as for the rainy season i think the rain just scoots over it when im moving.... the block can handle a little rain. unless i sink it than i can worry about cracking it haha
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Old Oct 5, 2009 | 07:03 AM
  #8  
BeastXJ's Avatar
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From: Arvada, CO
Year: 92 & 99
Model: Cherokee
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Originally Posted by bart
Mine is a VM Diesel and VM diesels need to be kept cool so I decided to install a vent over the Turbo, with a 12 volt extractor fan in it.

Got a bonnet scoop of Ebay, all the way from Hong Kong, and a large 12 volt, PC case fan, rated at 38 cubic feet per min. I chose this sort of fan as it just fits amongst all the pipes and ancilaries under the hood of the TD, above the turbo, without fouling anything.

First I used a stanley knife to remove the apropriate section of sound deadaning fron the underside of the bonnet



Then I cut out a square hole with the angle grinder..... No going back now.





Bolted the heavily waterproofed fan into place



then fixed the cowl on over the fan with bathroom sealant and a bead of flexible sealant around the edge



Picked an earth up under the hood, and ran a switched live from my aux panel in the truck.

Went for a test drive, and the heat being dumped out through the vent was amazing.
That's a pretty cool, not to mention ingenious mod.
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Old Oct 5, 2009 | 07:25 AM
  #9  
fantic238's Avatar
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Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
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Originally Posted by bart
Mine is a VM Diesel and VM diesels need to be kept cool so I decided to install a vent over the Turbo, with a 12 volt extractor fan in it.

Got a bonnet scoop of Ebay, all the way from Hong Kong, and a large 12 volt, PC case fan, rated at 38 cubic feet per min. I chose this sort of fan as it just fits amongst all the pipes and ancilaries under the hood of the TD, above the turbo, without fouling anything.

First I used a stanley knife to remove the apropriate section of sound deadaning fron the underside of the bonnet



Then I cut out a square hole with the angle grinder..... No going back now.





Bolted the heavily waterproofed fan into place



then fixed the cowl on over the fan with bathroom sealant and a bead of flexible sealant around the edge



Picked an earth up under the hood, and ran a switched live from my aux panel in the truck.

Went for a test drive, and the heat being dumped out through the vent was amazing.
Hows the head goin'? Done with the gasket? Tight?
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Old Oct 5, 2009 | 07:28 AM
  #10  
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Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
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A cheap mod to get some heat out is to put 1 inch spacers at the hood mounts so that the rear end sits 1 inch open when the hood is closed. 1.5$ of washers and bolts.
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Old Oct 5, 2009 | 09:09 AM
  #11  
95Cherokee's Avatar
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From: Houston Tx.
Year: 1995
Model: Cherokee
Engine: 4.0
Default

Originally Posted by 91familyxj
I like the fan but that might be to much right now but love it. I think im ganna do the vents it looks sweet and will not be to much on the wallet or time. So 95cherokee you said you did 1 vent do you have any pics? So MyHeepis.rad what size vents did you use and were did you get them. Plus I was wondering about water getting in I know it shouldnt be that big of a problem but just wondering what you did.
Just go to your local marine supply store, they will have ABS plastic boat vents for less than $10.

I only installed one, over the exhaust manifold where most of the heat is, I did not feel comfortable putting one on the other side over my distributor.

I'm not worrying about rain because the vent's are angled, there's only a little water getting in, it won't hurt anything. Sorry I don't have a cam or I'd post a pic.
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Old Oct 5, 2009 | 12:41 PM
  #12  
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From: Las Vegas
Year: 1996 Limited
Model: Grand Cherokee
Engine: 5.2
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Well thanks again guys Im going to work something out and get it done hopefully soon. Have any of you guys used the wrap for the exhaust manifold? I was just wondering about the pros and cons about it? Thanks
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Old Oct 5, 2009 | 12:59 PM
  #13  
nasonguy's Avatar
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Joined: Jul 2009
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Year: 1998
Model: Cherokee
Engine: 4.0 HO
Default

Originally Posted by 91familyxj
Well thanks again guys Im going to work something out and get it done hopefully soon. Have any of you guys used the wrap for the exhaust manifold? I was just wondering about the pros and cons about it? Thanks

It is really good stuff. I've seen it a lot on turbo cars, it does a wonderful job of keeping the heat of the exhaust, in the exhaust.

The only con is that it is pretty expensive, like a buck a foot I think.

It's also extremely hard to wrap the mani with it in the vehicle, if you want to do a good job with it, you gotta take the mani all the way out and wrap it on your bench.
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