Piston locker for turbo style motors:
http://www.integy.com/cgi-bin/webc.c...637&p_catid=11
Not sure that I would use one. It's metal on metal inside the motor. Can't be good regardless of what people say.
I use zip ties or even easier just shove the back end of one of your cleaning brushes into the exhaust port. Don't even have to remove the glow plug.