Hi,
whilst I am mustering up the courage to buy another 250cc two stroke that I will not have time to ride, I would appreciate if someone could help clarify the engine situation.

1. Are all engines marked MC16?
   
2. which engines are compatible across which models - bolt in, plug in or more complex?
   
3. Which engines have cranks that are easy to rebuild - do they all have the press on covers like RS250?
   
4. do all engines use the same centre bearing with integral seal?
   
5. Similar to 2 above, but electrics
   • Which ignition pickups and alternators fit which engines i.e. tapers, mountings
   • which engines and alternator sets can be used with which electrics
6. which clutches and gearbox are compatible across which models - are they all the same
   
7. are the cylinders the same across all models - do the same heads fit apart from round or octagonal, and exhaust pipe flanges in the same place?
   
8. are teh reed cages/rubbers same across all models
   
9. any useful information I may have forgotton

Hopefully this will get teh gray matter working and make a good thread!

Cheers to all who help, Vincent
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NSRless again...