ClintUK

I'm having trouble thinking how to describe this.

I get a high pitch 'singing' noise when throttle is moderate to hard down from about 3500 / 4000 rpm onwards and its turbo related.

It seems like a metalic noise rather than the whoosh / whirring of turbines.

Can anyone relate to this ?
Mark out of 10 for decription ?
Any ideas what it is ?

Cheers

XR-Wayne

Just Incase, i have a new TD04 turbo with 19k on it if needed mate, not asking a huge amount for it.

ClintUK

Thanks but this is a recon unit, I've had to change twice already and won't be doing it again, unless it's about to explode.


Does everyone have a completly silent turbos then ?

SiHethers

Clint

My standard td04 and also the vf34 did/do this. Like a metallic screech that increases in pitch and volume, only with window down, never really gets that loud.

Thought it was the td04 but did it from day 1 with the vf34 also. Never found a cause but doesn't seem to impair performance, so I don't worry about it. I think it is from the passage of exhaust gas through turbine at higher speeds, as it isn't there on low boost, but only when it's cranked up.

Hope this helps

Simon

ClintUK

Thanks
Reassuring someone else has at least heard this.

shippy

TD04 on mine has a nice whistle to it