tuliping

Hello, I came round to adjusting the clearances on my 2002 650SM, one of the valves was tight. Only one of the exhaust valves. I can't remember whether this has happened before. The engine has only done about 70 hours. Is it normal for valves to go, as a percentage how many Berg's have...

I have read plenty of posts here in the past regarding this topic. What exactly is tuliping? Can someone explain this in as much detail as possible? My guess: when the valve spring forces are too high, the valve will want to bury itself further into the valve seat, hence causing it to...