[TR] What impacts occur when using Heavier pistons

[Chris Simo]

I just got my new 87 mm pistons in for my tr4 rebuild.  They are County
brand and significantly heavier than the pistons I took out.

The skirts are at least 1/8 in thick. These things are beefy.

I'm guessing that additional weight have an impact that's similar to adding
weight to the flywheel.

It worries me to have that additional weight whirring around and pulling on
the crankshaft.

I'm going to have the crank balanced with flywheel attached - and also have
the rods and pistons balanced.

Is this a significant enough problem to try to find a different brand of
Pistons?

Thanks

Chris