I might be wrong, but I thought most of the balance is done with the piston assembled on the rod and then the weight is removed from the piston.
Good question though!
all my pistons weigh the exact same.
wieght is removed from crank.......
X2 after weighing all the piston/rod assembly's , the differnce wasnt enough for my own opinion to worry about removing material .
all my pistons weigh the exact same.
wieght is removed from crank.......
When an engine is balanced, you must weight each rod and make the rods all the same weight. They will be balanced so the big end and the small end are within 1 gram of each other, and ideally the whole rod weight will be within 1 gram of each other, on a good balance job. Then each piston, piston ring, wrist pin and clip set is matched to within 1 gram of each other (the rings, pin and clips should all be the same, so it doesn't matter what if they get mixed from one piston to the other). Then bob weights are assembled to match the weight of each rod piston combo and they are attached to the crank throws and the balancer and flywheel/flexplate are attached to the crank. The crank is then spun on a crank balancer and weight is removed or added where the machine says to.I might be wrong, but I thought most of the balance is done with the piston assembled on the rod and then the weight is removed from the piston.
Good question though!
My problem was when the machine shop was balancing the pistons the guy drilled into the bottom of the pistons to remove weight from the heavier pistons, and on the heavier pistons he hit the oil cooling gallery. I had Guy balance my replacements and he removed the weight from the wrist pin (chamferred the inside diameter on each end similar to how the LBZ wrist pins are) and engraved the pin and piston so I knew for sure which pin went with which piston. That allowed the removal of less material since steel is more dense than aluminum, and it kept from removing any material from the piston.Crank weight removal I know about, but remember Josh H's issue with his machinist drilling into his pistons? What was that about? I thought that was to get each piston/rod the same weight or maybe it was just someone doing something they shouldn't have...
When an engine is balanced, you must weight each rod and make the rods all the same weight. They will be balanced so the big end and the small end are within 1 gram of each other, and ideally the whole rod weight will be within 1 gram of each other, on a good balance job. Then each piston, piston ring, wrist pin and clip set is matched to within 1 gram of each other (the rings, pin and clips should all be the same, so it doesn't matter what if they get mixed from one piston to the other). Then bob weights are assembled to match the weight of each rod piston combo and they are attached to the crank throws and the balancer and flywheel/flexplate are attached to the crank. The crank is then spun on a crank balancer and weight is removed or added where the machine says to.
wow Trent!!! Im not gonna lie...when you posted up the first pics of the green parts.....I really wasnt crazy about it.
But now that I see them all on the engine/together...that looks sweet! Nice job.