worn bearing -like squeal from front of VR V6

[sticksicks]

When engine warms up there is a friggin annoying wobbly kinda squeal/whirring from the front.
It is NOT I repeat, NOT from the following:
A Roots Supercgarger or
Alternator, replaced.
Top idler pulley assembly next to alt/power steer pump, replaced twice.
(VRs have only one idler/tensioner pulley)
Power steer pump, replaced.
Serpentine belt, replaced, not noisy or rubbing where it shouldn't.
The balance-shaft.
Engine, has lots of the oily stuff.
Me, I'm a guy, I don't squeal.
The noise barely changes when I switch the aircon on/off.
So that leaves the water pump? which is working well, not draining fluid that I can see and not especially loose on it's shaft/bearing.
Or the harmoninc balancer? which I don't know how to test.
Or, the oil pump assembly? which is at the front of the block.
Engine doesn't run too warm or lose power or lose lots of oil or water.
This has slowly become worse over several months...
Cheers.

[Not_An_Abba_Fan]

Could be as simple as the belt. Pour a bit of water over the belt when it is doing it and see if the noise changes.

[rambunctious]

Had a squeal on an AU Falcon some time back, it was the Harmonic Balancer moving forward and causing the belt to rub.

Have a look and see if the belt is rubbing on anything near the balancer.

Also check your fans for noise.

[wamboin23]

pull the belt off, start the car and see if the noise stops.

if it does, spin each pulley by hand and see of you can tell what noisy.

if its stilll there, it's an engine noise.

[vs2DSIRE]

i recon it maybe your ac pump come alittle lose i recon . just go over the bolts to make sure there tight . mine come lose alittle and it made a little squeaking noise

[sticksicks]

TA to the first few replies, have edited post accordingly.
Water on belt makes NO difference.
It's also someting to note that it started in the week after I had her/it fitted with LPG.
That may be just a coincidence tho.

[ephect]

So removing the belt and running the engine, the noise is still there? Does it do it both on petrol and gas?

Do u definatly know if it's coming from the front of the engine.

[GothicKidd]

I've got a really loud whine, somewhat like a supercharger.. It's bad AC pulley bearings for me though. I got shorter belt and alot quiter
Do as said above, take your belt off start the car and see.

[sticksicks]

roger that folks, will try later today. thanks.

[scvs6]

I'd say it would be the water pump bearing. When you take the belt off, spin the water pump pulley and see if it spins freely or if it doesn't feel right. And also see if it's noisy when you spin it by hand also.

[sticksicks]

Removed serp' belt, started car, noise STILL present! AH HA!
Thanks wamboin23 and ephect.
Noise defo coming from front and lower area of engine. Removed cat (meow), noise still present on gas and petrol.
I suspect it may actually be me oil pump, dammit!
Previously I did think it was my water pump, so removed belt, checked bearing float(movement) which is not excessive. They don't really spin freely on or off the engine anyway so you can only really check for bearing movement / noise.
How do I know this? Cos I went to an auto shop on a quiet day and asked very nicely if I could check the bearing feel on a new pump; pretty much identical between mine and theirs.
And it's pretty unlikely that it's the front main engine bearing cos if it was making noises like that it 'd surely be f----ed by now!

[hako]

Could be the harmonic balancer - rubber centre splitting....may still squeak without belt on if it wobbles. Don't think an oil pump would squeak unless it was dry of oil which would be just before the engine seized???...