R32 Turbo Pssst Voice Changed To Ambulance Noise

[heaveyfoot_ skyliner]

hi

i am posting this topic for the second time in two weeks about my skyline r32 turbo pssst voice\noise changed to ambulance noise/voice and cause i took it for a bursting water hose to mechanic and he said its the head gasket but now its this noise coming from i do not know engine or turbo but definitely the normal pssst sound is had changed to an ambo looking siren . any ideas ?

[CRoNic...]

Like a whine?! Coming from the turbo?

it's called the 'death whine' and mean's your turbo is stuffed. Should only happen on boost, though.

[Godzilla32]

Thats a bit of a generalisation. More than likely its the turbo flange gasket. Very common for the bolts/nuts to come loose over time from the vibration/heat expansion and contraction. Sounds like a shrilling noise, almost as if there is something stuck in there rubbing on the blades. It will only occur during spooling and on boost. Check the 4 nuts/bolts that secure the turbo to the manifold.

Deren

[jakez88]

^^^ indeed happened to me in my old r32 with a highmount so it was much more visible. Gasket was blown to the shit and bolts were loose as. noise sounded like a ugly opera singing chick screaming in her highest note in her highest octave.

[cuppas]

man, i thought this thread was about a custom BOV that makes the siren wail

that would have been amusing

...i still giggled though

[Julz89]

just loosen all the bolts like they said above and there is ur siren noise lol.

[heaveyfoot_ skyliner]

thanks everyone i appreciate your help