Quote:
Originally Posted by CobraBall
Suggest reading. Crankshaft Balance Factors
It discusses in detail the various forces that act on the rotating mass of a 4 cycle engine. If you go from a 4 to a 3 cylinder, be sure to carry several containers, some kitty litter, a push broom and a shovel in your 3 cylinder car. The kitty liter  to soak up the engine oil when the rod(s) go through the oil pan. The broom to sweep up the engine parts and kitty litter and the shovel to put the mess in the containers. |
I doubt if anything that drastic would happen. You'll tire of the awful exhaust note and vibrations long before the engine blows up.