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Topic Review (Newest First)
03-02-2008 06:48 PM
NEW INTERIORS I had a problem with a cam on my big block Chevy,They gave me another one and said to break it in with the Shell Rotella ,And to make sure I broke it in with single springs.that's what I did ,Well second time around no trouble.
03-02-2008 06:41 PM
va4cqd from comp cams website:

7. I have heard stories about people having issues with flat tappet break in. What does COMP Cams® offer to help reduce the chances of flat tappet failure?

Due to federal legislation, motor oils no longer contain certain anti-scuffing agents that played a critical role in flat tappet camshaft break in. While incorrect valve spring pressure and not following proper break-in procedure are often the culprits, the changes in oil formulation have brought about a need for additional steps to be added to the break-in process.

COMP Cams® has two ways to ensure proper break-in of flat tappet cams. COMP Cams® Engine Break-In Additive (part #159) ensures that the camshaft will have the lubricants that it needs to seat the camshaft journals and lobe/lifter surfaces. This lubricant is poured into the engine crankcase after the camshaft and lifters have been coated with the initial break-in lubricant supplied with the camshaft.

Another option for increasing flat tappet cam longevity is nitriding. Recently COMP Cams® invested in a nitriding machine, the first of its kind owned by a major U.S. aftermarket camshaft manufacturer. Nitriding actually hardens the surface of the camshaft and tappet face by injecting nitrogen “needles” into the metal. The result is an ultra-hard surface on the face of the camshaft lobes and lifter face, which greatly improves the performance and break-in process for flat tappet cams. This process is an additional charge for COMP Cams® camshafts, but for many extreme duty applications, it virtually ensures proper break-in and increased durability.
03-02-2008 01:35 PM
NEW INTERIORS Comp cam said to use the Shell Rotella.
03-02-2008 01:29 PM
batstar70 I've heard that NAPA house brand oil is just as good as Shell Rotella,for break-ins. Anybody use anything different?
03-02-2008 01:07 PM
va4cqd Shell Rotella no longer has the good stuff in it
03-02-2008 12:39 AM
super_silent I use Shell Rotella (diesel motor oil) and a bottle of GM engine oil supplement. As for adjusting your valves, the link below is really good and very detailed:

http://www.chevelles.com/techref/tecref17.html


03-01-2008 03:42 PM
untchable502
proper cam break in and rocker adjustment

i'm sure this has been covered on a thread somewhere , but what is the proper break in for a cam, proper oil to use for break in, and when i set my heads in what is the proper adjustment for the rockers (stock) and will i have to do it again after start up???? any help and suggestion are greatly appericiated, also does anyone have a link for a rebuild kit for a q-jet, i have a holley 650 vac secs but i like the q-jets deep sound all this is going on a chevy 350 with a fresh rebuild.... once again thanks in advance

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