[earossi]

I would like to match mark the pistons and cylinders from my 3.6 engine. I prefer to use an electric etcher so as not to impose any residual stresses into the parts.

To mark the cylinders, I believe it safe to etch markings on one of the cooling fins of each cylinder without impacting the integrity of the cylinder. However, I am less certain about marking each piston. My guess is that I should be able to place etch markings on the inside wall of each piston's skirt, but would like some comments from folks who have successfully marked pistons in the past.

I am talking about making small figures, about 1/4" in size to pair up each piston with its mating cylinder of the motor.

Is this location OK or is there a better place or technique for match marking pistons?