I had to make a choice between 1) fiiting a new Nachi Japanese made bearing to my existing single bearing balancer, or 2) grinding a 650 twin bearing balancer to the same shape as my 400. I went for the easy option 1) and fitted new bearing, it was rated at 17000 rpm with seals removed running in oil. I have just assembled the bottom end and fitted the head then realised that due to the balancer spinning in the reverse direction to the crank it is doing double the speed at the bearing. Is this right or am I going mad ?? What is the best option here I don't really want to split it again but it is far easier than stuffing my motor.
Cheers Dan
Cheers Dan