COMP Cams Ultra Pro Magnum XD Roller Rocker Arms - Manual

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COMP Cams®
3406 Democrat Rd.
Memphis, TN 38118
Phone: 901.795.2400
Part #151
Revised 7/9/14
Toll Free: 1.800.999.0853
www.compcams.com
Ultra Pro Magnum™ &
Ultra Pro Magnum™ XD Roller Rocker Arms
Thank you for choosing COMP Cams ® products; we are proud to be your manufacturer of choice. Please read this
complete instruction sheet carefully (including the application notes section) before beginning installation and also
take a moment to review the included limited warranty information.
Installation:
1. With the valve covers off and old rocker arms removed, the first step will be to inspect the pushrods. COMP
Cams
® strongly suggests when installing new rocker arms (of any kind), that new COMP Cams ® pushrods be
incorporated to ensure that all mating surfaces are fresh to prevent any premature failures. If you are using the
old pushrods, examine the ends of all pushrods for any flaking or galling. Any imperfections on the ends of the
pushrods will result in either rocker arm or lifter failure. Note: Be sure to clean and blow dry all pushrods.
Also, blow through the pushrod to remove any foreign matter such as sludge. Remember, in any type of
motor work, cleanliness is imperative.
2. Inspect rocker arm studs, stud bosses, guide plates, etc. for excessive wear. Check to see if the old rocker was
cutting into the side of the rocker arm stud. Also check the guide slots in the cylinder head or guide plates for
excessive wear. Wipe clean the tops of all the valves and again inspect each one for wear or mushrooming of the
valve stem.
Movement of metal or galling of the studs, pedestals or valve stems is a sign of excessive wear. Now is the time
to make whatever decisions are necessary. Installing new rocker arms on questionable studs or mushroomed
valve stems is asking for trouble.
3. Remove the Ultra Pro Magnum™ or Ultra Pro Magnum™ XD Roller Rockers from the package and wash
rockers and polylocks thoroughly with denatured alcohol (lacquer thinner). Do not use water or evaporative
cleaners. Then blow dry. Soak the rockers in engine oil or spray with COMP Cams
® Valve Train Assembly
Spray (Part #106).
4. Install the pushrods into the motor with both ends coated with a small amount of assembly lube. If the pushrod
has a long hardened tip, make sure it rides properly in the guide plate. If the pushrod has an arrow, be sure to
install it pointed up. It is recommended that all the pushrods be pre-oiled through the pushrod holes. Apply a
small amount of COMP Cams
® assembly lube to valve stem tips and rocker arm pushrod seats.
INSTRUCTIONS