high boost screaming noise, please help

[alkee]

hi, i ve been bouncing this round the tt forum for a bit now , but no body seems to be able to help. so i thought i would try here.. problem is a noise coming from the turbo area when the car is at max boost (24psi)ive had it on a rolling road even had a hand down to try a feel for leeking boost etc. but nothin . the noise is a cross between a fan belt sliping and a the top of a bottle been blown and only does this noise when i floor it early and leave it to build up ,lets say from 40mph in 4 gear, ive had a boost gauge on , and it does it at about 22 to 24 psi . got new dv and samco inlet hose fitted, checked all jubilee clips etc, so the question is really what could make this noise without there being a leek?

 

[alkee]

sounds interesting where abouts is this gauge hose taping point is it on the inlet hose, what gauge is this for? thanks in advance

 

[alkee]

mmm dont really sound like thats it.my noise is coming from the turbo area. and i havnt got a boost gauge fitted full time , only when i tested the preasure

 

[Markey]

Is there a spilt in your cat?
I had a noise that sounded like a duck repeatively quacking when boosting.
Found that there was a small gap inbetween where the Cat met the down pipe and another one where the down pipe joins the Mid section really easy to sort out.

 

[Gambba]

Had a similar noise on my cracked turbo, especially when lifting off...high boost.

I hope not for your sake, but it was a noise like that which you describe.

 

[alkee]

you got me worried /ubbthreads/images/graemlins/shocked.gif but im not loosing any power or psi at all ?

 

[Mike.M]

I am very sure that the noise you are hearing is due to the gauge.

I had it higher up the rev range.........will look for the part for you.

 

[alkee]

cheers mike hope your right, have you got a picture of where it may be