1987-88 250 crank case

Transmission shafts alignment depend on this well, I would stand on this matter as best practice

mismatched cases may make a nice trued crank vibrate like a washer on spin cycle with a cinder block in it!

I seem to recall some rather large in size, kind of hand written/scratched number inside the place for the crankshaft. Often this area has the paint or coating rubbed to metal so such is not visible. I guess I could study some of the cases. Seem to recall that some of the cases I took apart could be seen as the same. It would be relatively easy to put the mis matched cases together, put on a vertical mill or similar with an appropriate indicator and see if the bores for the crank and bearings do in fact line up. I have changed one of them as has the local dealer at the time at least in the 1985-86 model.

What entity made the cases may vary, I have been told the auto cases were made in a different place, will just guess the four stroke ones being aluminum were also made there, just a guess.

Still looking for cases.