Rockers rubbing retainers
#1
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Rockers rubbing retainers
Posting this for a friend. He is having some valvetrain noise so he pulls his covers off and he's saying his stock rockers are rubbing his retainers leaving a rough edge. I guess it's only happening when the valve is closing or at the top of the lift. Open for any comments thanks
#2
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I had the problem, the shop I had do some head work for me without my knowledge surfaced the tops of the valve stems so they would all be level. BS, to make a long story short I only had ~ .022 clearance between the rocker and the retainer. Specs call for like .045. I had another shop install new Ferrea valves to get the clearance I needed.
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Still haven't figured out why the stock rockers were roughing up the retainers. He switched to Harland Sharps and from stock length to a 7.425 PR and it made the valvetrain louder but seemed to stop the rubbing. I got a chance to take some pics since the heads are off now (He blew the motor up, hydrolocked it I think)
Roughed up Retainers
KAboom
Roughed up Retainers
KAboom