DIY: Vented Aluminum Hood
#471
I did this on my Miata autocross car years ago (2011) and have never seen any rust. That's saying a lot when you consider my car came from Boston, required some rust cleanup when I first got it.
#473
#476
Whomever is worried about rain on a vented hood...
Solution 1 (for non-welders or if you already cut your hood like this only) make thin rain covers, drill (4) 3/16" holes on all corners 1/2" off edge on COVERS. STEP 2.. TRACE HOLES ON HOOD. INSTALL WING NUTS AND BOLTS WHENEVER IT RAINS. Store all rain covers IN A BAG IN TRUNK OR HOME. Solution 2 ( **JB welding big vents only.** Aluminum weld small vents only. Because it will warp if you weld big vents 4sho) trace a 3side cut line on each vent. Bend and Lift as high as you want. Measure the high side. Fabricate side triangle gussets. Make a 1/4" to 1/2" rip to connect across the vent opening on the bottom edge of opening between the 2 gussets at vented opening. Tack, weld, and paint.. Boom
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