Functional Hood Scoop Mod
This is about 98% done as I post. I need to cut out the front of the scoop I purchased, and just put more screws in to hold it on permanently. I'll need to open up the screw access holes on the underside of the hood, so I can get the screws in, without losing them. I purchased the scoop, based upon an "lptitan" recommnedation. I hadn't seen a modified CAI intake ducting that I really cared for, and some I found totally unacceptable in appearance.
I have a AEM BruteForce CAI. I already had an additional inlet cut into it, and did not have time to take it out to enlarge from a 3" hole to an ideal 4" hole. I made a steel flange to screw onto existing hole pattern, using stainlaess steel 1/4-20x 3/4" Bolts, Flatwashers, Lockwashers and Nylon Insert Locknut. Nothing like being secured well. I welded a 4"x3" Exhaust Pipe Reducer to the flange, ground it smooth, and welded a 4" Exhaust Elbow inside the Reducer. Carefully lowering the hood to get proper location and lengths to trim the pieces. Primed and Painted Red for show, wrapped in a left over piece of DEI Brand CAI Tube Wrap (the kind with a velcro closure). A piece of their aluminum tape covered the rough edge of the cut wrap. The foil insulation that you see in the first pic, was covered by the original flange, which mounted on the inside of the box. Ideally, do a 4" all the way, and a larger flange if it still has room for screws to mount.
Next, I transferred the location of the top of the elbow to the bottom side of the hood, by lowering the hood and marking with magicc marker. I drilled with a 5" Hole Saw and then deburred the hole. I used a plastic Carb to Filter adapter kit from the parts store ($10-20 bucks, sold for Chevy's IIRC), found 1 piece that happened to fit exactly into the 5" Hole, and epoxied it into place. I lowered the hood, and remarked the 4" Exhaust Elbow, to trim for a closer fit, so it is flush with the top of the hood. I had an almost perfect alignment. I grabbed the Elbow, and jerked it forward, to get a perfect concentric alignment. Finding some plastic edge trim from the scoop kit, I placed the plastic trim on top of the Exhaust elbow and the on the lowest part of the underside of the hood. You'll see it in the photos. No rough edges exist.
Install the Hood Scoop as directions included with it say to, it must be positioned with concern of the Mod I'm showing you, lining up with the scoop covering it OK. Common sense. I considered all of this and drilled for the Scoop first, then did the Elbow stuff acouple weeks later.
For final Install, I may use Blue masking tape on the top of hood and side of the scoop, and run a bead of Black RTV form the hardware store, then install the Scoop 1 last time. Clean off the RTV, and peel off the paper, then a very fine line of RTV will fill any minor gaps. I learned this from watching my Granite Countertop being installed. Scoop comes with double sided tape also. Be careful, drill pilot holes for the screws, so you don't breakout the fiberglass. Mine did just fine.
Hopefully, heres a few pics:
The Elbow and Reducer came from a local Truck Parts supplier (Keller). A truck stop would not have this.
The Scoop is from
Custom Auto Trim and Graphics, Inc.
4141 Jutland Drive #140, San Diego, CA 92117
858-273-5700 (office) 858-273-5747 (Fax)
They are at www.customautotrim.com
. It is a Universal Hood Scoop, Model HS005. It was reduced to about $160, reg $200. They painted it for $100. With shipping, I paid $278.85. A good deal for a strong scoop, and a painted to match. Great for the DIY who isn't painting the whole hood. I think the Scoop looks fine, not tacked on, in spite of the seam. I'd like a huge scoop, but this looks plenty impressive from the drivers seat, and does not obstruct the view.
I have a couple other Mods I'll be posting up. Reversed Valves TB Bypass, Hood Pins.