Shreiking Turbo

[ARTZ]

Got no idea whats going on here, car gets to about 4.5 5k rpm , usually in 1st 2nd sometimes 3rd gear...and squeels like a mofo and stops making power..checked turbo shaft no play, cant find any air leaks though it seems plausible this would be the problem...have checked all belts (as it sounds like a fanbelt squeal but worse) there good,

Not sure if its overboosting but i doubt this is the problem

have no boost gauge yet, but can tell its not boosting properly when it squeals

Only thing ive put on it is a turbotech boost valve , which was working fine, but maybe could be the problem..

i may try removing this now see what happens

anyway if anyone has any clue...

[NA_Goodness]

Worn bearings perhaps?

[shaunr34gtt]

when mine did this had a broken exhaust stud on the manifold and the nuts holding the turbo to the manifold were loose - all fine once tightened up.

though im assuming youve checked this as have said no air leaks

[OVADRV]

My 33 did this noise and loss of power up top when the intake pipe was sucking closed.

you should try this link ----------> http://www.skylinesaustralia.com/forums/Re...l&hl=rev210

Worked for me.

Edited November 21, 2009 by OVADRV

[R31Nismoid]

it will be leaky piping if there is screeching.

you just have not found where its leaking from.

[ARTZ]

HEY thanx guys i really did think something is leaking, guess ill just have to keep looking, and no i didnt think to check the exhaust for leaks just the intake stuff mainly i took all this off (bar the intercooler) to check turbo shaft and didnt find any cracks in piping

is there anyway i can locate leaks or just keep looking, do you think it would be the controller at all..

[ARTZ]

when mine did this had a broken exhaust stud on the manifold and the nuts holding the turbo to the manifold were loose - all fine once tightened up.

though im assuming youve checked this as have said no air leaks

Its been a while but...you were right...Thanx...