Viper GTS V10-8.0L VIN E (1999)
Heat Shield: Description and Operation
Exhaust System Heat Shields
Exhaust Manifold Heat Shield
Heat shields are needed to protect both the car and the environment from the high temperatures developed in the vicinity of the catalytic converters
and exhaust manifolds. Additional thermal insulation is used in the sill panels and above the rear muffler.
CAUTION: Avoid application of rust prevention compounds or undercoating materials to exhaust system floor pan heat shields on cars if equipped.
Light over spray near the edges is permitted. Application of coating will greatly reduce the efficiency of the heat shields resulting in excessive floor
pan temperatures and objectionable fumes.
The combustion reaction caused by the catalyst releases additional heat in the exhaust system. Causing temperature increases in the area of the reactor
under severe operating conditions, Such conditions can exist when the engine misfires or otherwise does not operate at peak efficiency. Do not remove
spark plug wires from plugs or by any other means short out cylinders if exhaust system is equipped with catalytic converter. Failure of the catalytic
converter can occur due to temperature increases caused by unburned fuel passing through the converter.
The use of the catalysts also involves some non-automotive problems. Unleaded gasoline must be used to avoid poisoning the catalyst core. Do not
allow engine to operate above 1200 RPM in neutral for extended periods over 5 minutes. This condition may result in excessive exhaust system
temperatures because of no air movement under the vehicle.
