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DIY Hood Vents

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Here is how to make vents in your hood. I based the shape on shark gills. Low drag but good heat extraction from the engine bay.

 

 
Click on images to enlarge

Here is the .PDF template that you should print out and put small holes in the red dots.

PRINT CHECK!!! once you print it out make sure that the distance between those marked dots is close to 6 1/8" or it will all be off. If it is off, then adjust the size in your print settings until it matches.

 

 
DIY hood vents

Next on the inside of the hood, measure out and find the spot for the guide hole, then drill it.

 
 
DIY hood vents

Once you drill your guide hole, you put the hood down and on the top you draw a parallel line to the side edge of the hood. Then put the template on and align it with the guide hole and your parallel line.

 
DIY hood vents

Then take a marker and make some dots through the holes you made in the template.

 
 
DIY hood vents

Now mark your cut lines.

 
DIY hood vents

And then go to town with the Dremel tool or whatever else you like to cut aluminum with. I used a steel blade, it cuts quick and it's nice and thin.

 
 
DIY hood vents
Then use something wide and tough to push the rear flaps down. I just used a file.  
DIY hood vents

Then draw in the bend lines for the front flaps and used plyers to gently bend them upwards.

 
DIY hood vents

Next file all the edges smooth.

 
DIY hood vents

View from the inside.

 
DIY hood vents

I used aluminum tape to tape the middle cuts.

 
DIY hood vents

Then used JB Weld to fill in the midle cuts.

 
DIY hood vents

Then sand it smooth, primer it, and paint it.

 
 
DIY hood vents

Done.

 
 
DIY hood vents

Repeat on the other side.

 
 
DIY shark gills hood vents
 

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