The bluing of the rocker and pushrod sound like an oiling problem. That is the only thing I could figure would get both of them. There is a possibility that the oil is getting up the pushrod but not into the socket where the rocker ball is running. I would closely inspect the rocker ball and see if there are signs of a lack of oil such as galling of the rocker ball. I am not positive but I would think that if there was enough heat to blue the rocker and 1 inch of the pushrod that there was extreme heat in that one rocker, and that heat has to originate somewhere and the best bet is in the rocker ball. If it is truly blue it is up around the 450-500 degree point. I had no problems running "Stock" rockers on my 455 at all, I ran them for about 3.5 years and one day ran across a good deal on the Comp roller tips and picked them up. When I pulled the factory rockers off the engine I could see no signs of over heating at all. Another question for you, can you see the valve stem, what condition is it in, is there any discoloration similar to the rocker and pushrod? Could this be due to guide friction?
[ May 20, 2002, 12:14 AM: Message edited by: Injunjoe ]
|