Cam Bearing Wear/Melting

Rodney Byrd · Mar 9, 2017

TA Perf said: ↑

This didn't happen because of spring pressure or a little run out in the cam. If your using a High Volume pump you must not use the white and never use the red spring, in my opinion. Use a stock steel color spring with the early pump cover and start with the orange or the factory steel color spring from a late model pump cover. Install a adjustable regulator or shim the spring for desired oil pressure. I have run engines for years with a high volume pumps with no trouble, then one day on one of these engines that had been running for YEARS I decide to up the pressure and install a white spring. Within one minute the cam bearings were wiped out. Didn't even change the oil or anything, just the spring. Your failure is centered around the high volume pump and the way the rest of the engine was built. Pressure relief spring, bearing clearances etc... Install a new TA pump assembly, Coated TA1559 cam bearings. As far as the groove in the #1 cam journal, I have simply roughed it up and filled it with JB Weld, machined & polished lightly and ran it. I pulled that engine down 7 years later and it looked like it did when it went together. No wear spot in the cam bearing either. Questions, your all welcome to call me.
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Wow! Thanks for the great info!! I really can't remember which spring I used but I will check and report back. I always used the HV kit and booster plate to overcome greater than stock bearing clearances and sketchy timing covers (worn used ones). Never used thick oils and I tried to keep the pressure 60# or less at RPM hot, which usually isn't crazy, cold at warmup rpm. Guess I need to spring for a new cover......

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Cam Bearing Wear/Melting

Rodney Byrd Torque

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