I recently bought a 1984 hondaxr200r for cheap. Its real beat up. I am taking the engine apart to replace the shift shaft. Now that its on the bench, I have noti ed that the cylinder head assembly has 249cm3 stamped into it. I checked the engine serial that is stamped onto the bottom end, and it is for sure a 200. Is this a Frankenstein that someone has put together? I have read that parts can bolt up but stroke is different, so the compression will be very weak, if at all. Someone have any ideas?