Blown turbo? need you input

[Tymkin]

Hi guys & girls,

edit :

My car R33 gtst and under load (5K rpm +) makes a high squealing noise like high pressure air flow kinda like a big truck turbo. I have have three diffrent opinons from 3 workshops today.

opinion 1. it's nothing don't worry about it.

opinion 2. Could be turbo could be faulty catalytic converter need to pull it apart to see

opinion 3. It's your turbo (snicker snicker that will cost ya)

Has anybody experienced this before and what did you do?

If it is the turbo can anybody recommend a place in melbourne to get mine rebuilt?

Cheers.

[Steve]

Dude, first thing I would be doing is getting a decent mechanic, who works with turbo cars, to check it out for you - and offer to pay him to do so.

Have heard good things about Ice Performance in Melbourne, but, as I live in perth this is purely hearsay.

Steve

[RoboPope]

whistling can also be caused by broken manifold studs, its not that unusual for the outside ones an the 33 GTSt to break due to expansion and contraction. The whistling is loss of boost pressure. Its not the end of the world to fit just involves loads of labour to stip everything out they way to get at it (you dont even need to take the head off)

Best advice is to take it to a specialist though

Paul

[Tymkin]

The car has lost heaps of power today and i have been ringing around getting prices. If ii does happens to be the turbo is it better to buy a new one, buy second-hand or get mine reconditioned (high flowed whilst they are at it!)

[Steve]

Choice of turbo is a really complex thing - it really depends on what you are after performance wise, there are sooooo many options out there - each a compromise in its own way.

[teka]

sounds like leaking boost to me, that makes a squealing sounds, intercooler pipes?

[Tymkin]

Just got back from doing 300K's down to gippsland to do the Christmas trip. I'm more confidant thats it leaking boost. If the turbo spools up it sound like air is just leaking out someware. Some boost still makes it through but heaps less powerfull!

A real shame because my brother has a 02 HSV clubsport with 255 KW and i wanted to drag him! I reckon i would win because his car is an auto.