Another newbie question, does the Fueling cam back plate fix the cam bearing issue? Inquiring minds would like to know.
The cams are supported at both ends. The inner ends use replaceable needle bearings. The best of the are by Torrington. The outer ends are supported by the camplate. This is either done by using holes bored the aluminum plate to act as the "bearing" surface, or some have bronze sleeves in the aluminum for the cams to rotate in. The earlier Feulings had the bronze sleeves. The newer one use the plain aluminum. In normal operation, with adequate lubrication, there is no issue with either design. If something happens (lack of lubrication, excessive crank runout causing failure, etc), you might be able to savage the sleeved plate by replacing the sleeves. At that point, you have so many other problems, I wouldn't hesitate to replace the camplate anyway. So this is a non-factor to me.
This has nothing to do whatsoever with the type of tensioner system used. The older style tensioners are still an issue. Probably the biggest one in the twin-cam design. The newer hydraulic tensioner system seems to be much better. Then there's the best, gear drive, which you can only convert to if you have excellent measured crank runout.
Hoist!
