Re: Is it necessary?


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Posted by MoparNorm [71.110.251.13] on Wednesday, February 16, 2011 at 16:25:41 :

In Reply to: Re: Is it neccessary? posted by Todd Wilson [71.158.216.62] on Wednesday, February 16, 2011 at 13:34:23 :

Comp Cams and others have technical bulletins on their websites.
Bulletin #225:

"Subject: Flat Tappet Camshaft Failures (Hydraulic & Solid/Mechanical)
Recent changes in oil and engine technology are likely the cause of premature camshaft
failure; here’s how you can protect your engine!
Premature flat tappet camshaft failure has been on the rise recently and not just with one brand or
type of camshaft. In almost every case, the hardness or taper of the cam lobe is suspected, yet
most of the time that is not the problem. This growing trend is due to factors that are completely
unrelated to camshaft manufacture or quality control. Changes in today’s oil products and
“advancements” in internal engine configurations have contributed to a harsher environment for
the camshaft and a potential for failure during break-in. But there are several things you can do
to curtail this discouraging trend.
Engine Building Tips & Parts Selection
Engines are great at providing oil to every engine component except one – the camshaft.
Windage trays that limit oil’s ability to reach the cam and lifters, modification of connecting rod
side clearances for less oil splash and special oil pans further complicate both the break-in
process and camshaft lubrication in general. Careful and informed selection of your engine
components and lubricants can greatly reduce your chances of having a failure.
Lifter Selection
COMP Cams® offers flat tappet lifters (solid/mechanical) with oiling holes in the cam contact
face, which will increase oil flow to the lifter face to camshaft lobe contact point. Furthermore,
using a lifter grooving tool (COMP Cams® Part #5003 for GM engines; see catalog or website
for other engine makes) will enhance oiling throughout the camshaft and valve train. As we all
know by now, better oil flow means better initial break-in and increased camshaft durability.
Additionally, make sure you purchase only high-quality lifters from reputable sources. Most
lifters look alike, but you don’t really know where they were produced. “Imported” flat tappet
lifters often times use inferior lifter castings and DO NOT deliver the durability of COMP
Cams® high-quality, US-built lifters. COMP Cams® lifters are built to strict tolerances on the
diameter and linear dimensions and designed to fit each application with the highest level of
quality. This ensures the lifter rotates properly and decreases the potential for failure.
Additionally, COMP Cams® flat tappet lifters have the correct oil band depth, width, and
location to properly regulate the internal oiling of your engine."



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