Lower engine knock

[pekingduck]

A big-end bearing died in my Honda CB175 many, many years ago. I remember only that (a) it wasn’t cheap to fix; and (b) it made a very solid and regular knocking noise (not at all faint) which is what told me something was wrong.

Older Honda singles and twins had roller bearing rods and ball/roller main bearings, so they were pressed together, with replacement parts largely unavailable, so they were expensive. They also had centrifugal oil filters on the end of the crank rather than paper filters. For the most part, current singles are still pressed together.