COMP Cams Flat Tappet Camshaft Failures (Hydraulic & Solid/Mechanical) - Manual (Page 3)

COMP Cams®
3406 Democrat Rd. * Memphis, TN 38118
Phone: 1-800-999-0853 * Fax: (901) 366-1807
www.compcams.com
Part #255
Revised 5/4/12
subsequent testing has proven the durability benefits of its long term use. This proprietary blend
of anti-wear ZDDP fortification, anti-fiction Molybdenum, and extreme pressure additives
promotes proper break-in and protects against premature cam and lifter failure by replacing some
of the beneficial ingredients that the oil companies have been forced to remove from off-the-
shelf oil. These specialized COMP Cams® lubricants are the best “insurance policy” you can
buy, and are the first step to avoiding durability problems with your new flat tappet camshaft.
Proper Camshaft Break-In
Proper flat tappet camshaft set-up and break-in, as any engine builder knows, are keys to the life
of a camshaft, both short and long term. The correct procedure allows the lifters to establish
rotation and develop a good wear pattern.
Pre-Installation
Remove the camshaft from the box, and clean it with mineral spirits or a parts washing solvent,
then perform a visual inspection immediately. Look carefully for dings, dents, deep scratches, or
any other defect that may be detrimental to the break-in or long-term life of the camshaft. Pay
special attention to the lobe and journal contact surfaces and distributor gear. Before installing
the camshaft apply an ample amount of the supplied camshaft and lifter installation lube (COMP
Cams® Part #153) to the lobes, journals, distributor gear, and lifters.
Break-In Preparation
Always remove the inner spring during break-in when using dual valve springs, or if you have a
high load single spring, use a lighter spring (110-120 lbs. seat load and 260-270 lbs. open load).
An alternative solution that addresses this same concern is using a set of low-ratio break-in
rocker arms. Both of these solutions provide your best chance of proper camshaft break-in and
long term durability. While these tips may be a slight inconvenience, a little time and effort on
the front-end is much better than destroying your new engine.
Proper Procedure
As soon as the engine fires, bring the rpm up to 2000 to 2500 during the first 30 minutes of
operation. Slower engine speeds will not supply the camshaft with an adequate amount of oil for
the break-in period. The engine rpm may be varied periodically from 2000 to 2500 to direct oil
splash to different areas of the camshaft. After the 30 minute break-in period, change the oil and
filter again to be sure all contaminants and break-in lube are removed from the engine. The inner
valve springs should now be replaced and the correct rocker arms installed.