Exhaust System: Description and Operation: Overview

Exhaust System

OVERVIEW
The 4.2L V8 exhaust system is fabricated from stainless steel and is supplied as 5 separate assemblies. The 4.2L V8 naturally aspirated system is similar in design to the system used on the 3.0L V6 engine variant. The 4.2L V8 supercharged system is also similar but uses a different design of center resonator silencer.
The front section comprises 2 separate assemblies (LH (left-hand) and RH (right-hand)) incorporating a catalytic converter for each bank of cylinders. The rear section also comprises 3 separate sections. Each section incorporates a center resonator silencer and a rear silencer.
The system is attached to the underside of the body with mounting rubbers which are located on mild steel hanger bars that are welded to the system. The mounting rubbers locate on corresponding hangers which are welded or bolted to the underside of the vehicle body.