Ok so i got the harmonic shit all done, new keyway, different (uncracked) front pully, different cam pulley, new oil seal and new timing belt and tensioner bearing.
All good in that area.
But i still have this noise its gonna kill me i can see it coming.
How can i describe it, its like wind howling thru a small gap in a window, or a Owl hooting with a slight shuttering affect, can only feel it very slightly thru the car, actually to the point where i think i was so dam tired i was probably imaging the vibrations. Definately no knocking and definately not a high pitch sqeal.
It comes and goes at idle say every 20-30secs, it will go from no noise at all to and slowly get louder till it stops. The noise gets a slightly higher pitch whilst driving till around 25003000-rpm. Then it doesnt re-appear till rpm drops again.
Now i know it isnt the water pump, or clutch in the fan and it isnt the alternator. I left the belt off for a few moments to check those items, they werent moving but the noise prevealed.
So any ideas, experiences with this noise, places to start looking, any suggestion of places to look and listen.
Ill have another attack tomoz after work.