This is a guy revving a rotary engine in an old rx-7......i bet there wasnt even anything wrong with the engine......but he revs it to 9k for 5 minutes.........if i were you i'd skip to about 4 minutes, then watch the rest.....
http://videos.streetfire.net/video/656d6e66-8317-4775-bdcf-14ef855ba56e.htm
http://videos.streetfire.net/video/656d6e66-8317-4775-bdcf-14ef855ba56e.htm