By OldJoe54
I have a 75 Duster, with a 360c.i. from a 1975 RV, don't know the mileage on this engine. Idles smoothly around 750-800 rpm, but it seems to be "noisy", seems loudest on the right bank. Ended up pulling the push rods. two of the rods on two different cylinders have a wear band ( see photo ) about 1/5 inch up from the bottom end (this is the lifter end). I call it a wear band because you can feel the rod has actually worn down. So my questions are 1. what causes this wear?, 2. do I need... Read more