I think this is a total waste of time I just got my n/a running 5 days ago and here someone is trying to kill one what a waste
grind 2 exhaust lobes off, gut 2 injectors, connect those two injectors to an air tank, add a pressure release and viola, air compressor. Blowing motors is a long time VW thing. Back when GTGs used to be called 'bug ins', you could pretty much count on someone bringing along an old aircooled motor to run to destruction. If you really want to blow it, in the interest of science: put a EGT on it and slowly increase fuel until you find the critical temp.