- Hood Scoop Installation
- NACA Duct Installation
- Small NACA Duct Installation
- View the Guide in Microsoft Word Format
- View the Guide in Adobe PDF Format
.
Prepare the hood scoop by first masking off the other pieces and painting the scoop a desired color on the inside, like a car body. The small NACA duct is for a side window and should remain clear. Cut the pieces out leaving a flanged surface at the base for gluing. For the small NACA duct and under ducting, leave enough material to allow for addition air direction and mounting surface. See illustrations below.
After the scoop has been prepared, locate it on the hood of your car body to allow for the best airflow to your car's engine as possible. Cut out the provided templates.
Using a pen, mark the location of your scoop (preferably inline with your engine, but not necessary). Cut out the opening, carefully, using a hobby knife or Dremel tool. Smooth the edges with a small file.
The plastic will hold its shape if flexed far enough. You have to be careful though not to crease it. If you need to adjust the scoop to fit the contour of the body, you can work the material in the needed areas for a better shape. Practice working the material with a piece of plastic scrap cut away from the scoop. Once satisfied with the fit, glue the scoop into place using Shoe Goo™ or similar adhesive.
An under mounted duct is supplied to be mounted on the inside of the body. The leading edge of the duct should be aligned with the front edge of the opening as shown in the illustrations below. If you located your hood scoop in the middle of your hood, you can mount the under ducting at an angle to direct the airflow to your car's engine. Add screws (not provided) to enhance the look and durability of the scoop.
To create an air flow over the top of your engine, install a large NACA Duct in the roof. Cut the duct out leaving a flanged surface at the base for gluing. Cut the back off at the line molded in the duct. This is an under ducting piece used in other applications. See illustration below.
Using a pen and the provided template, mark the location of your duct (preferably inline with your engine, but not necessary). Cut out the opening, carefully, using a hobby knife or Dremel tool. Smooth the edges with a small file. Or, if you have a steady hand, use a hobby knife and trace around the template to score the body. Carefully remove the scored section from the body.
The plastic will hold its shape if flexed far enough. You have to be careful though not to crease it. If you need to adjust the duct to fit the contour of the body, you can work the material in the needed areas for a better shape. Practice working the material with a piece of plastic scrap cut away from the duct. Once satisfied with the fit, glue the duct into place using Shoe Goo™ or similar adhesive.
To prepare the small NACA duct, trim the corners of the flat section left on the back of the duct. Figure A On the duct, you will notice a cutting line molded onto the ducts. Cut the duct in two along this line. Figure B To better direct air where needed, shape and angle the flat section as shown. Figure C
Use the provided template to locate the duct on the side window. Cut out the openings using the same methods described above. Glue the pieces on the inside of the window arrange as shown. Figure D
For added airflow, these small ducts can be installed as a NACA scoop. Figure E, Figure F. Simply trim more material from the rear-ducting piece. Cut out a section on the side window behind the NACA duct to allow the rear-ducting piece to protrude out from the inside of the body. Glue the piece from the inside.
Please feel free to email us and share your questions and ideas Tech@oocrcracing.com
