What way does the arrow point on a piston?
What way does the arrow point on a piston? Arrow on piston should always point to the exhaust side. What happens if you install a piston backwards? If you install the rods backwards, you loose the bearing and rod clearances for the radius of the crank. And it will destory the engine in matter of minutes or a few miles. What does the arrow mean on the top of a piston? On those that do, an arrow on the piston crown/top generally indicates how it is to be installed. The arrow should be pointed “up” (towards the center of the...