Introduction

The Heatshield Gasket is designed to reduce the intake air temperatures by up to 54°F/30°C. This reduction in temperature can result in horsepower gains of 3% to 9%, although 3% is the average. Unlike normal gaskets, this gasket is reusable.

Hint: Do not have an air filter sitting open under the hood. Underhood temperatures can be easily 15-20 degrees Celsius hotter than outside the car robbing you of 4-6 % of your power potential. Duct cold air from the front of the car to a sealed air filter box.

Tools Needed

· 12 mm box and open ended wrench

· 12 and 10 mm sockets and extensions

· Screwdrivers and pliers

· Magnetic Pickup (for the12mm nuts you will drop)

Installation

Installation involves removing the intake manifold, installing the gasket and replacing the intake manifold. Do not forget to refill the radiator once you are finished.

Note: Blocking the thermostat bypass and will stop the thermostat from opening, as the wax pellet never receives any hot water. If you choose to block the coolant bypass next to cylinder #4, you will need to remove and drill six 1/8” holes around the thermostat circumference. If you do not do this the car will overheat. Gaskets do not block the coolant bypass off unless you block it off yourself, or unless otherwise noted on the gasket.

1. It is recommended that you perform this installation on a cold engine. Drain the radiator, making sure that no animals will drink the fluid once it is drained. Remove the intake air pipe (for more maneuvering room). Next remove the fuel rail and injectors plugging the holes with rags for engine safety. Then remove the water heating pipes from the cold idle valve and idle control valve.

B16A Manifold pictured here: These will vary in location between various manifolds

2. Remove the 12mm nuts holding the intake manifold to the head.

3. Install the gasket making sure that all surfaces are clean and free of remnants of old gasket material.

4. Torque the nuts to the normal factory specifications from the center of the manifold to the outside and then re-torque them after 2 hours of driving (for cars with a supercharger, torque to about 25% more since they will be inaccessible after installation is complete)

5. Make sure all hoses and vacuum lines are reconnected to the original locations or you may experience idle problems or error codes.