aircon is not a issue in this case. i wouldnt of thought the oil pump as any thing to do with the balancer as the two are not connected mechanically.
the car parts stores in bundaberg are useless, they just looked at me blankly when i asked for a set of lifters for a RB25, so not even going to bother about the balancer.
just wanna know if it will be right to use temporarly so i can see if its the noise i have and until i can track down a proper one.