rockers were not hardwelded, cam was. Rockers were rebushed and ground. They had perfect contact patch/alignment with the cam. But yes an incompatibility issue, OR an inferior rocker branded DP1120.In which case the cams were not the problem. However the previous failure 2 years ago was with hardwelded cams and new OE rockers and rocker arm pins. So incompatible cam/rocker could be the issue or maybe not. I don't know really. And not knowing is painful and frustrating. For now I am leaning towards the DP1120 rocker being substandard caused the problem. Engine building has some risks and both luck and expertise is needed for a good result. I'll move on and see it as another lesson learned. I did like the cams a lot and it is a loss that the build failed
Quote:
Originally Posted by Rosco_NZ
Sounding like there may be an issue with the hardness of the pad resulting from the hard welding process?
|