not worth changing the balancer shafts. i didnt bother with "balancing" the internals since the internals come balanced from Honda. if they werent, the motors wouldnt last. i didnt install a balancer shaft belt on my setup... the additional vibration is minimal. balancer shafts are designed for driver comfort... it doesnt hurt to disable them. H22 and H23 shafts are different, but there's no blocker plate design to remove them for weight reduction... so i suggest you just not install the belt.

the compression on the Type-S pistons will obviously be the same as when installed in a Type-S motor. piston wrist pin placement is the same, along with deck height. the only reason why this setup produces a different compression ratio is due to the H22's head having more volume in the combustion chamber. stock for stock, the H23 is 9.8:1, and the H22 is 10.1:1 the H23 head has less chamber volume, and in combination with a dished piston, still prodecues 9.8:1 compression. the H22's head having more volume requires a domed piston to increase compression a mere .3

F22 and H23 rods are identical. if you dont trust me, tear down both motors and compare them. if you're planning a real build up tho, you're going to replace the rods.

obviously, the timing belt tensioner doesnt mesh with the teeth on a timing belt. it merely applies tension on the backside. you can use either one. i chose to use the H22's autotensioner, but you can use the manual tensioner from the H23 if you choose. if this section causes you difficulty, you need to find someone else to do the job.