Whining Turbo?

[memphis]

Today while leaving, I noticed my car was making a loud whining noise (seems to be coming from the turbo) whenever the engine is revved. I am not exactly a turbo wizz but generally what does this mean? the car still drives OK and I still get boost.

Should i get it looked at by a mechanic or is this something easily fixable?.

R33 GTS-T with stock everything

[Cubes]

Does it get worse with more boost or seems to flatten out?

Does it do it when the car is cold and brings the rev's up.

Then when it warms up and on idle you can't hear it until you give a little stab of the accelerator?

[memphis]

Well, It DID get worse with more boost, and once it had idled for a while it muffled out

now it doesnt make the noise at all, and i found the problem. I pulled all the piping off and found that a small aluminium bolt had somehow (i donno how) had gone into the turbo, there was aluminium everywhere and the bolt looked fairly destroyed.

I removed this bolt, the turbo no longer whines but it doesnt produce boost. (i was mistaken in my 1st post when i said i got boost). So my car drives like....well...shit.

Any ideas? I am going to call turbotech tomorrow and see if they can have a look at it for me. I hope i dont need a new turbo (if so how much are they worth?). In the meantime, do you think its safe to drive thecar with the turbo not boosting?, everything else seems fine.

[predator]

um...errr, that can't be good for the turbo... i'd say its hosed, or at least needs rebuilding

[macka]

You cant stop the turbo from boosting..

It may be shagged

Time to Hiflow it

You wont want to buy a brand new T28 $$$$$$$$ plus a 2nd hand of a wreck maybe half clagged as well..

If i was you i would get them to rebuild it even if u dont get a ball bearing core anymore

[keca18]

dude, even dirt in a turbo compressor housing will **** a turbo. if youve found metal shavings in her, sounds like that bolts munched your compressor wheel to pieces. bad news, turbo's ****ed, good news....good excuse to get rid of that undersized stocker hair dryer and time to get your hands on a trust TD-06!!! personally i wouldnt waste my time rebuilding a standard turbo. they have a rediculous ceramic rear wheel, and chances are if you rebuild the thing, 6 months later it will shit the exhaust wheel anyway. do yourself a favour, look up www.japanesemotorsport.com.au and look at second hand turbo's.

good luck champ