strange noise again from turbo?

[steveatyork]

re

any more suggestions? keep them coming please. there will b some rep

 

[steveatyork]

re

a little update. its looking like an inlet valve damaged. by a piece of the compressor wheel..i have a feeling the blame is going to shift over to me saying somthing has found its way through the filter!!!!!!!! Speaking to a specialist he as suggested a manefacturing fault on the comp wheel (a piece from the centre of the wheel braking off, damaging the blades and through to the inlet) Right or wrongs with this tread carfull lads. Just dont want anyone ending up with the probs i have now:-(

 

[steveatyork]

re

just thought id bump this up

 

[TurboDave]

Surely if it was a damaged valve the noise would get worse as the RPM increases, does it?

 

[Spoonz]

^^^no but it iwll kinda make the engine nearly stall

 

[TurboDave]

Idd be very surprised if its a damaged intake valve and depending on where the damage is it could or could not make more noise at higer RPM.

Do a compression test if you think you have a chipped or damaged valve.

 

[steveatyork]

re

did a compression test. all coming back about 160ish. like u said it would show up on the test..still lost.but yeh the noise is there when u drive it.

 

[Chris@CCM]

tbh buddy it just sounds like its sucking air in i dont think theres a prob. defo not a valve damaged . u took the i/c piping off at t body and tryed it ? try blocking off the stock bov and even try blocking of the pcv pipe on the inlet side just to see

 

[steveatyork]

re

no chris. its not a normal sound as u might think.

 

[Chris@CCM]

no chris. its not a normal sound as u might think.

u try removing the intercooler pipe off the t/body to see if it was still there ?

 

[steveatyork]

re

hi chris yeh tried.it still the same.thing when u drive it its there alll the time.preety loud to when it come on turb?

 

[Chris@CCM]

v odd mate with out seeing the car its have hard to know

 

[L900CMC]

Could there be somethong stuck around the butterfly or obstructing it? Suppose you would of saw that with the ic pipe off though

 

[Chris@CCM]

Could there be somethong stuck around the butterfly or obstructing it? Suppose you would of saw that with the ic pipe off though

that was my thoughts to buddy

 

[L900CMC]

Its def a strange one

 

[steveatyork]

re

checked all throttle body seems fine..what i do find a abit strange is when i primed the speedvision turbo's i could hold the comp wheel to stop it spining. but with my standard ct9 if i do the same.i cant hold it .nearly took my finger off.this is @ idle.im prob pulling at straws now.to try and find the problem.ive even took the ic pipe to the throttle body off and it still makes the noise??