Limits of stock 1nzfe found once and for all.

[TURBO YARIS]

Originally Posted by why?

balancing a four cylinder engine is just a waste. Your info really is only good for massive engines or older ones.

Modern engines come off the line almost perfectly specced, and aftermarket companies can now have all the same equipment and ability that the manufacturers have.

This isn't the 60's anymore. There are a lot of things people did as a a matter of course on those cars that is totally useless on ours.

Any and every engine not mater how many cylinders, configuration or size will benefit from having its rotating assembly balance. If the factory piston and rod weight 100 grams together & you replace it with an aftermarket piston & rod which is either lighter (75 grams) or heavier (125 grams) the factory balance is gone. And yes it isnt the 60's, so why wouldnt you do a process to engine that is done by every professional engine builder and has proven result time & time again? BTW my weight #'s are just examples. Im well aware that the factory pistons & rods are lighter than a set of CP's & Pauter.