....but I'm almost sure the case surface is the bearing just like on some of the smaller air cooled engines.
I stand corrected, Dave. I believe you’re right about the crank spinning in the case’s own material for bearings and I’m blown away. Briggs and Stratton comes to mind.
After looking through dozens of pictures on the web of XV 1600 and 1700 engine cases I never saw a plain bearing insert in any of them.
Further research in the service manual did show the specs for the case ID
limits for wear and said the cases would have to be replaced, if exceeded. What in the world? No inserts?
So, what was that service guy feeding him about lining up the galley holes?
What amazes me is all the threads in RSC about people losing oil pressure due to pump gear failure and riding for miles until the lifters collapsed and brought it to their attention with all the racket that something was up.
I just don’t see how the crank bearing material (aluminum) survived an episode of that magnitude after they replaced the pump gear and kept going.
Tho this is a 1600 case, now, I see bearing inserts. Can even see the notches for proper alignment and to keep them from spinning. But, they’re non replaceable?