Fabrication & builders section. All fabrication posts go here.
XJ/MJ/ZJ/WJ Only projects go here. Questions belong in modified tech.

Homebrew hood vents

Thread Tools
 
Search this Thread
 
Old 09-03-2011, 10:04 PM
  #1  
Member
Thread Starter
 
SirLasVegas's Avatar
 
Join Date: Jun 2011
Location: Sin City
Posts: 172
Likes: 0
Received 0 Likes on 0 Posts
Year: 98
Model: Cherokee
Engine: 4.0
Default Homebrew hood vents

Decided to whip up some hood vents for the XJ. Was originally going to use "Grill O Sheets" but after buying them I didnt like how flimsy the aluminum was. So, I went to home depot and got a sheet of black security door screen. All they had was large sheets (48" I think), wish they woulda had something smaller but oh well... extra material for another project down the road maybe.

Started out by tracing the area I wanted cut, and started drilling 1" holes to get my saw in.


Started out using my airsaw, but the little compressor Im using at the moment cant keep up, so I switched to my sawzaw. Then cleaned the edges up with an angle grinder and a file. (I cut two different sections so that I was cutting less material away, in the hopes to keep the hood a little more solid)


Cut the sheets to the shape I wanted, and had some extra fender trim laying around, so I figured Id do the edges with that.




Mounted them to the hood with self drilling screws, six on each side.






Tomorrow Im going to mask it off and paint the area behind the screen black. Hopefully it will help camouflage the holes a little
Old 09-04-2011, 02:04 AM
  #2  
Senior Member
 
rideordie66's Avatar
 
Join Date: Aug 2010
Location: Arcata California
Posts: 850
Likes: 0
Received 4 Likes on 2 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
Default

Most of the vents I see have the mesh on the inside but that looks goot too
Old 09-04-2011, 09:26 AM
  #3  
Seasoned Member
 
ArmyGraham's Avatar
 
Join Date: Sep 2010
Location: Camp Casey South Korea
Posts: 413
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
Default

I think it may look better on the underside. Not trying to knock or anything. Are you going to put a rain "gutter"in?
Old 09-04-2011, 02:05 PM
  #4  
CF Veteran
 
Zack92MJ's Avatar
 
Join Date: Jun 2011
Location: Dayton, Ohio
Posts: 2,460
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Comanche
Engine: 4.0
Default

Originally Posted by ArmyGraham
I think it may look better on the underside. Not trying to knock or anything. Are you going to put a rain "gutter"in?

Ive never really understood the point of that since it seems to me like that it would make the vents less efficient.
Old 09-04-2011, 04:53 PM
  #5  
Member
 
Jackup's Avatar
 
Join Date: Oct 2010
Location: O'Fallon Missouri
Posts: 186
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 High Output
Default

Round out the corners of the holes in the hood and put some more door edging around them. It might look a little better.
Old 09-04-2011, 05:06 PM
  #6  
CF Veteran
 
no rdplz's Avatar
 
Join Date: Jan 2010
Location: Virginia Beach by way of Michigan
Posts: 5,482
Likes: 0
Received 24 Likes on 24 Posts
Default

Not bad. I prefer the screen material to be under the hood (looks cleaner IMO), but to each his own. I've run my vents in the spot as yours for about 1.5 years w/o drip pans and have had zero issues with water. Just put dielectric grease on all your connections and seal your distributor cap.
Old 09-04-2011, 08:49 PM
  #7  
Member
Thread Starter
 
SirLasVegas's Avatar
 
Join Date: Jun 2011
Location: Sin City
Posts: 172
Likes: 0
Received 0 Likes on 0 Posts
Year: 98
Model: Cherokee
Engine: 4.0
Default

It'll look better once I paint it. Ill get pics up tomorrow or late tonight. Just got home so havent had time to work on it today.
Old 09-05-2011, 10:52 AM
  #8  
CF Veteran
 
Zack92MJ's Avatar
 
Join Date: Jun 2011
Location: Dayton, Ohio
Posts: 2,460
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Comanche
Engine: 4.0
Default

I have a question for the OP...What was the point of making two different wholes when you just covered them both up with the mesh, why not just make one big one?
Old 09-05-2011, 03:13 PM
  #9  
Member
Thread Starter
 
SirLasVegas's Avatar
 
Join Date: Jun 2011
Location: Sin City
Posts: 172
Likes: 0
Received 0 Likes on 0 Posts
Year: 98
Model: Cherokee
Engine: 4.0
Default

The original mesh I was going to use were "Grill O Sheets" and they are VERY thin aluminum. I originally had the holes cut that way, so when I layed the grill sheets over them, they would have some support in the middle... and also to keep a little more structure to the hood. I was so dissatisfied with the Grill O Sheets that last minute I chose not to use them but decided to leave the holes the same.
Old 09-06-2011, 06:30 PM
  #10  
Member
Thread Starter
 
SirLasVegas's Avatar
 
Join Date: Jun 2011
Location: Sin City
Posts: 172
Likes: 0
Received 0 Likes on 0 Posts
Year: 98
Model: Cherokee
Engine: 4.0
Default

well, pictures dont really do it much justice, but its noticeably better in person having it painted black behind the vents.





Old 10-10-2011, 05:39 PM
  #11  
Banned
 
rsucesso's Avatar
 
Join Date: Nov 2010
Location: https://t.me/pump_upp
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Year: 1999
Model: Cherokee (SJ)
Engine: 88151119953
Default

nice job! I would try black screws thou.
Old 10-10-2011, 07:08 PM
  #12  
Senior Member
 
RichW's Avatar
 
Join Date: Oct 2011
Location: Racine, Ohio
Posts: 706
Likes: 0
Received 0 Likes on 0 Posts
Year: 1999
Model: Grand Cherokee
Engine: 4.7
Default

Originally Posted by SirLasVegas
well, pictures dont really do it much justice, but its noticeably better in person having it painted black behind the vents.





I think it looks very clean and neat. Good Job. I like it. Thumbs Up!
Old 10-10-2011, 08:22 PM
  #13  
CF Veteran
 
Zack92MJ's Avatar
 
Join Date: Jun 2011
Location: Dayton, Ohio
Posts: 2,460
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Comanche
Engine: 4.0
Default

Hey any word on how those vents are workin out for ya bud?
Old 10-11-2011, 03:14 AM
  #14  
Member
Thread Starter
 
SirLasVegas's Avatar
 
Join Date: Jun 2011
Location: Sin City
Posts: 172
Likes: 0
Received 0 Likes on 0 Posts
Year: 98
Model: Cherokee
Engine: 4.0
Default

Seems to be helping keep the bay a little cooler. Just had a butt load of rain too and nothing seemed to get affected by the water. Overall, Id say im happy with how they turned out.
Old 10-12-2011, 01:18 PM
  #15  
Banned
 
rsucesso's Avatar
 
Join Date: Nov 2010
Location: https://t.me/pump_upp
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Year: 1999
Model: Cherokee (SJ)
Engine: 88151119953
Default

Hello guys. All my mechanics insist that the t-stat is the one that will keep the temperture down, and that the vents are only a visual aid... I still think that the vents will help the cooling system thou... Anyone has measured something that can bust on confirm the "vents myth"?


Quick Reply: Homebrew hood vents



All times are GMT -5. The time now is 09:11 PM.