That method of finding TDC works on any engine with an even number of cylinders by splitting the firing order down the middle. On an odd-numbered engine like a 3 or 5 cylinder, find the "rocking" point and then turn the engine one full turn to find TDC on the compression stroke. It's also useful for setting hydraulic lifters with the engine stopped. Just gently find the "zero lash" point, and then turn the adjuster the specified number of turns to preload the lifter.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!