Through hardness

Joe was able to get some through hardness data on the RAS pin, because it was partly worn away. The hardness was the same on the unmarred surface and on the worn surface, both at 53 Rc. The worn surface was worn away by 0.010", so there was at least a "decent thru-thickness during the hardening process", according to Joe. The other rockers didn't show any wear like this, so we don't have any data on the thickness of the hardening process on those pins.

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