Hood Louvers?
nm80cj7
Jeeper
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- 1980 CJ7
4.2L 258 CID L6
4 SPEED
DANA 300
Here is mine from . Good prices.
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Hood Louvers?
- Thread starter Hedgehog
- Start date Start date:
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Hedgehog
Always Off-Roading Jeeper
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
What does it look like from underneath the hood? Also how much did it cost. I see it is long enough to cover the jeep crease in the hood.
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- '85 CJ-7, 258/4.2L 6cyl. Bought new in 1985. Full cage, Warn 8274 winch, Ford 9" rear, front/rear Detroit Lockers w/4:88 R&P. T-5 tranny and 4:1 t'case. 33X12.50-15 BFG/AT, MSD ign, on board air---
Morris4x4Center
www.jeep4x4center.com
If it helps, Poison Spyder makes one -
Poison Spyder Hood Louver - Black Powder Coat - PS-1153010PC
Poison Spyder Hood Louver - Black Powder Coat - PS-1153010PC
Hedgehog
Always Off-Roading Jeeper
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
I often wonder, since the hood profile is identical back at least to 72, why do they always start with 1976 .... yes, Lumpy I know there is a break off in body style in '76. but the hood is the same.
I am wondering how the hood is vented to allow air to flow. Is there large squares cut out, were there a bunch of holes drilled in the hood, is the large area under the vents removed.
I am wondering how the hood is vented to allow air to flow. Is there large squares cut out, were there a bunch of holes drilled in the hood, is the large area under the vents removed.
Last edited:
- Posts
- 14,789
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- 55
- Location
- Springfield, Missouri-U.S.A. Earth
- Vehicle(s)
- '85 CJ-7, 258/4.2L 6cyl. Bought new in 1985. Full cage, Warn 8274 winch, Ford 9" rear, front/rear Detroit Lockers w/4:88 R&P. T-5 tranny and 4:1 t'case. 33X12.50-15 BFG/AT, MSD ign, on board air---
The hood is cut out, and the vent is installed over it.
I think the '76 deal has to do with a brace that runs at the back of the hood. Not sure--
LG
I think the '76 deal has to do with a brace that runs at the back of the hood. Not sure--
LG
Hedgehog
Always Off-Roading Jeeper
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
I wonder if cutting one big ol' hole would seriously compromise the structural integrity of the hood. Yes, even with the new piece bolted in place. I'm really just wondering how solid the hood feels with the new vented section in place. I'd probably be one to do a Swiss Cheese kind of job under the louver panel. I still like the louvers like the one I (and many others) have done. The ones installed on my CJ sure suck out a lot of heat, something good simply must be happening there.
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- Location
- Springfield, Missouri-U.S.A. Earth
- Vehicle(s)
- '85 CJ-7, 258/4.2L 6cyl. Bought new in 1985. Full cage, Warn 8274 winch, Ford 9" rear, front/rear Detroit Lockers w/4:88 R&P. T-5 tranny and 4:1 t'case. 33X12.50-15 BFG/AT, MSD ign, on board air---
The alum/steel vents are made from thicker material than the hood is made of.
Not an issue-
LG
Not an issue-
LG
Hedgehog
Always Off-Roading Jeeper
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
So nm80cj7, Did you install your louvers as Lumpy believes you did or did you do it differently?
Lumpy - I was surprised at how thick the steel was in the hood of my '75. Much thicker than expected.
Lumpy - I was surprised at how thick the steel was in the hood of my '75. Much thicker than expected.
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- Springfield, Missouri-U.S.A. Earth
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- '85 CJ-7, 258/4.2L 6cyl. Bought new in 1985. Full cage, Warn 8274 winch, Ford 9" rear, front/rear Detroit Lockers w/4:88 R&P. T-5 tranny and 4:1 t'case. 33X12.50-15 BFG/AT, MSD ign, on board air---
The hood on my '7' was thicker than expected.
Used a hand-held cut off wheel to cut mine.
Make sure you paint the bare edge after cutting
LG
nm80cj7
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4.2L 258 CID L6
4 SPEED
DANA 300
I just cut out were the vents are. 24 bolts . It is still strong. No flex in the hood. same as it was before holes were cut.
Texorado
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I have them and they work well. Can you see this photo I tried to attach?
Hedgehog
Always Off-Roading Jeeper
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-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
nm80cj7 - Thanks for responding. Did your vents accomplish what you were trying to do? Mine made a heck of a difference at least on perceived heat under the hood. Before the louvers the first thing I always noticed was how hot EVERYTHING was under the hood. Yes, you expect the engine compartment to be hot, this was a situation where it seemed overly hot. Not so much anymore.
gr8dain
Full Time Jeeper
It looks like you vents are made to let more cool air in vs let the hot air out. Do you notice a difference in temps?
Hedgehog
Always Off-Roading Jeeper
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
I wonder if the air flowing over the hood would draw more air out or force air in?
I'm thinking that the negative pressure of air flowing over the hood would "suck" more air out of the engine compartment. That is why my louvers are facing toward the rear. I bet it's about the same, as long as hot air has some place to go, either under the vehicle and out our up through the louvers and out.
I'm thinking that the negative pressure of air flowing over the hood would "suck" more air out of the engine compartment. That is why my louvers are facing toward the rear. I bet it's about the same, as long as hot air has some place to go, either under the vehicle and out our up through the louvers and out.
I had to create a new profile. I was locked out of my other one for some reason. I never thought about it that much but my engine runs very cool and the hood is solid and does not flex too much.
nm80cj7
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- 1980 CJ7
4.2L 258 CID L6
4 SPEED
DANA 300
It keeps engine cooler. And under hood area is not as hot.
Hedgehog
Always Off-Roading Jeeper
- Posts
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- -1975 Jeep CJ5, 360 V8, Headers, Duel Exhaust,T15 transmission, D-20 Transfer case, Twin Stick Conversion, Warn 8274 Winch
-1951 Willys Wagon, 4 cylinder, "F" head, little rust, very close to stock
A cooler engine compartment can't hurt, especially the battery and other electrical components. I suppose a jeep in truly cold winter conditions could get too cold, but a little tape or something nicer over the louvers would take care of any problems adding louvers might cause.
nm80cj7
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- 1980 CJ7
4.2L 258 CID L6
4 SPEED
DANA 300
I don't drive mine in the winter to much. I have no top for it.
IOPort51
NOT the voice of reason Jeep-CJ.com
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I wonder if there is a measurable air pressure in the engine compartment when the fan is on. If so I would say there is definitely something to be gained with the vents. 