These cams are a bit noisier than other types. I wasted 2 XE285s in my 493. I also figure that it was due to my ignorance about inadequate Zinc protection. I've since learned plenty on the subject, but there is always room for improvement.
Comp now offers the "Pro Plasma" treatment. Its a sort of surface hardening that along with proper oil, should last a long time. I'm thinking of switching back to that 285 since I liked the performance ans streetability of it.
Sorry for your troubles. Broken parts are a hard lesson to learn, huh?
