I have hear all about the
oil thing and I still do not believe it. We all know that 90 percent of the roller cams are in the American style v-? Basically a factory retrofit. Most of the overhead cam engines have the cam on valve cup like a Lamborghini, Audi, etc. This is essentially the same as a flat tapet, Right? I go back to metals and overworking everything. A few years ago it was acutally the cam blanks fault.