[wensum]

I was driven crazy by timing gear noise. As my motor was modified with a reprofiled camshaft, I fitted an alloy timing gear, but the noise was almost unbearable. I then fitted a matched pair of steel and Bronze gears, but the noise was just as bad. I also fitted a new spring to the plunger and when that didn't make any difference, I packed behind it to apply more pressure and that made no difference.
Finally I fitted a Harmonic balancer pulley and the transformation was miraculous.
The re-profiled camshaft certainly has a more aggressive profile and with only four cylinders, the camshaft is oscillating as it pushes a valve open then is rapidly pushed closed. The new pulley somehow evened that all out and at the same time removed a couple of noticeable vibration periods in the motor.