SERVICE MANUAL
INTRODUCTION
Introduction
DESCRIPTION
The cylinder head is a one piece, iron alloy casting with a
six bolt pattern around each cylinder which assures
positive head gasket sealing.
The camshaft is a steel forging with induction hardened
lobes. It is a "Polydyne" design camshaft which means
that valve travel speed is reduced just before valve
seating to allow gentle seating of valves. As a result of
this "Polydyne" design camshaft, superior valve life can
be achieved.
The lubrication system in the Turbocharged 400 series
engines
addresses
the
problem
of
on-the-spot
immediate cooling with twelve oil cooling jets installed in
the main bearing webs, two per cylinder. These cooling
jets facilitate piston and wrist pin cooling, thus eliminating
the possibility of heat build-up in these hardworking high
friction areas.
CGES- 185-3
*PRINTED IN UNITED STATES OF AMERICA
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