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After carefully going over the engine, and having the heads tested, I found something different. I found the right cylinder timing to be half a tooth advanced when the engine is set at TDC. I am wondering if this caused the catastrophic failure. It may account for the fact that the bike could ride ...

Thanks for the advice, the engine is a genuine low km and I am the second owner. Fuel is a possibility, but there is not much way of checking it here. I will keep digging, I really only have time. Certainly don't have much money to fix it. I did get it hot one winters morning, idled it for about 15 ...

I am not 100% why it has happened, every 'expert' I have talked to gives me a different reason. Cannot really test some stuff if it is not running. Definitely overheated on one cylinder only. Could be mixture or lubrication issue. Maybe there was a flaw with this particular engine. I do check ...

What does "nipped up" mean?

Do you mean "seized"?

As prev suggested - find out why.

The lubrication fluid film remains for a long time in bearings after pump failure, not so long in liner lubrication.

If seized (even if micro-seizure of bore/rings and not seized now) - a bit more investigation ...

My R1100S twin spark nipped up and now has damage to the right piston and cylinder only. It appears to have overheated on this side only. Where can I get reasonable priced parts. Is a big bore the way to go?