Cloyes HP Set User Manual

GENERAL INSTRUCTIONS

APPLIES TO ALL SETS

THIS CLOYES TIMING SET IS EQUIPPED WITH MULTIPLE KEYWAYS ON THE CRANKSHAFT SPROCKET
TO ALLOW ADJUSTMENT OF THE CAMSHAFT TIMING RELATIVE TO THE CRANKSHAFT. IN GENERAL,
ADVANCING THE CAMSHAFT WILL INCREASE LOW END TORQUE. RETARDING THE CAMSHAFT WILL
INCREASE HIGH END TORQUE. IN ALL CASES, THE O.E.M. (ZERO KEYWAY) WILL POSITION THE
CAMSHAFT AND CRANKSHAFT AS SPECIFIED BY THE ENGINE MANUFACTURER. PICTURED IS AN ENGINE

WITH 12 AND 6 O'CLOCK TIMING MARK POSITION. ALIGN THE MARKS PROPERLY FOR YOUR ENGINE

RETARDED
CAMSHAFT

FACTORY

SPECIFICATION

ADVANCED
CAMSHAFT

USE THE MARK & KEYWAY

CAM WILL BE 4 CRANK DEGREES

RETARDED FROM THE O.E.M.

SETTING

MOST HIGH PERFORMANCE CAMSHAFTS ARE GROUND WITH ADVANCE OR RETARD BUILT IN.
IN THIS CASE THE CAM MANUFACTURER INTENDS THE CAM TO BE SET AT THE O.E.M. SETTING

USE THE MARK & KEYWAY

CAM WILL BE SET

AT O.E.M. SETTING

USE THE MARK & KEYWAY

CAM WILL BE 4 CRANK DEGREES

ADVANCED FROM THE O.E.M.

SETTING

ENGINE
BLOCK

CHECK FOR

CLEARANCE

BE SURE TO CHECK FOR CLEARANCE BETWEEN THE ENGINE BLOCK, SPROCKETS AND TIMING CHAIN.
CAUSES OF INTERFERENCE COMMONLY COME FROM SLIGHT BLOCK VARIATIONS, WORN CAM THRUST
SURFACES, OIL GALLEY PLUGS OR COMBINATIONS OF THE ABOVE.

THIS TIMING DRIVE MUST HAVE PROPER LUBRICATION. AS SPEEDS

INCREASE SO DOES THE NEED FOR OIL ON THE TIMING DRIVE. DO NOT MODIFY THE ENGINE OIL
SYSTEM IN A MATTER THAT WILL INHIBIT OIL FLOW TO THE TIMING CHAIN.