Oil slots

Steve, the oil slots are the same as the ones on the Precision Oil Pumps shafts, and those never gave me any trouble. However, maybe the ones on the POP shafts were beveled, and these are sharp, or something like that. I wondered too if maybe the bushing material shaved off and clogged up the oil hole on the rocker that failed, or something like that.

Also agree with you on the screwdriver slot; that would be a better solution than that big hole down through the adjuster.

Just doing a little thinking out loud here, but regarding the shaft to rocker clearance, there are of course times during the valvetrain cycle when the rocker is floating free, and not loaded. Perhaps if the clearance is not large enough, the oil doesn't flood the bushing all the way at this time, so when the rocker is loaded by spring pressure again, there is some metal to metal contact. Just guessing on this...

Jay Brown
1968 Shelby GT 500 Convertible, 492" 667 HP FE
1969 R code Mach 1, 490" supercharged FE, 9.35 @ 151.20, 2007 Drag Week Runner Up, Power Adder Big Block
2005 Ford GT, 2006 Drag Week Winner, 12.0 Daily Driver
1969 Ford Galaxie XL, 460 (Ho Hum....)
1964 Ford Galaxie 500, 510" SOHC