Actually Ive heard of this being done numerous times.Just recently in Honda Tunning Magezine where they removed the Balance Shaft Belt.There suppouse to be some vibration but minimal and as far as the oil pressure in the H22 it is suppouse to be better without the Balance Shafts,they infact are anything but a good thing as far as Performance is concerned for the rest of the motor with heat,more rotating mass amongs other things and supposely are there only to reduce the motor vibration for Driver Comfort being that the Prelude was the Luxury Coupe in the Honda Line up at the time it came out.