Quote:
Originally Posted by Jeff Lee
Well SSDiv6, you may have access to scientific instruments and labs, but I knew from the get-go  when I took a Speed-Pro/TRW AMC rocker and "thunked" it with my fingernail and it went "dunk"  and the OEM rocker went "diiiinggg"  , then surely the factory offering was better  . Although that did lead to a rockwell hardness test which confirmed a huge difference as I suspected... |
The lab test allowed me to see the variation on materials and try to find the solution. Yes, you can do it the
"Redneck" way via the resonance test, however, I was trying to find how much variation between manufacturers, its ductility and malleability. What I also found with the replacement stamped rocker arms is that in addition to the cycles and loading they are exposed to, the heat affects the malleability.