Flaking comp cam lobes
03-31-2014, 04:51 PM
#42
04-01-2014, 07:37 PM
#43
Ive pulked two comp cams that looked just like that. One even had a nice 20 thousandths groove a lifter roller wide cut into one of the lobes. When I decide to buy another cam it wont be from comp nor will I be using their springs. Both incedences I had were with prc dual golds.
04-02-2014, 09:23 AM
#45
04-02-2014, 10:36 AM
#46
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Well my motor is back together with a comp camn 233/239 and dual PRC springs. What are the signs that the cam is flaking? Something that I will notice in an oil change? Does it cause major problems or is it something you will only notice if you pull the cam?
04-02-2014, 12:05 PM
#50
The lack of ZDDP in modern oils due to emissions and the effects zinc has on catalytic converters has been a hot topic for a while now. There could be some truth to the debate with higher spring pressures and aggressive lobes even on roller cams. Valve train setup probably has more to to with the lifter and cam lobe failures on hydraulic rollers than anything.
To the OP... on the cam pictured, are the 'flakes' on the trailing ramp of the cam lobe? If so, the valve train setup could be to blame due to instability and 'pole vaulting' the lifter off the top of the lobe. When it crashes down with the high open pressure of aftermarket springs, it beats up the lifter roller and cam lobe.
To the OP... on the cam pictured, are the 'flakes' on the trailing ramp of the cam lobe? If so, the valve train setup could be to blame due to instability and 'pole vaulting' the lifter off the top of the lobe. When it crashes down with the high open pressure of aftermarket springs, it beats up the lifter roller and cam lobe.
There was one that had been ran for much longer, and it had flaked all the way around a lobe. This was blamed on a lifter issue and not a cam issue. Now I see that it's complete BS