Bearing housing explanation.......
From left to right:
1 - Stock Kawasaki bearing housing
2 - Kawi housing with the center cored out (I've found a hole saw in the milling machine or drill press is the easiest method)
3- Stock Yami housing and the newly machined Kawi core (Turned to 2.045" diameter in the lathe)
4 - Two complete ready to go conversion housings.
I machine the Kawi core for .002" interference fit and then freeze them and press the core into the Yami housing. Once the core is pressed in, I epoxy the rear of the unit to seal it. The epoxy is probably over kill due to the interference fit, but what the hell?