StickyMicky

comeing home from work i got stopped @ a junction by the red light, this junction is busy, anyways when my gap came i pulled away and gave it sum welly, not like a full blown racing start or anything, just a bit of gas to help me shift

now the turbo gave out a allmighty whine!
and no boost was produced

i drove down the road coasting and doing a few checks

boost will increase from say -0.65 to +0.01/+0.03 bit after this it will not boost any higher, like theres a major hose leak or sumthing, which could be a pretty good explanation, if it wasnt for the really loud whineing noise from the turbo, sounds simmiler to a car with the alternator belt far to tight, but is related to the turbo and not the alternator


all cars i have expearianced with a broken turbo have had the classic white smoke all over the place but still producing boost, this has me confused

the turbo is a standerd model of a 97 wrx which i belive is of the ihi vf range

car drove home fine apart from it was in closed loop mode and was rather slow (and whiney as ****)

any advice or simmiler storys?
was it Grade A subaru that sold second hand replacments for about £150?

im gonna have to goto kip for a bit now as ive just finnsihed a niteshift, planning to get up about 1pm and take the intercooler of and sucj to see if its a blown pipe (maybe the manifold is leaking or sumthing?)

cheers in advance

Jolly Green Monster

iTrader: (4)

Sounds like a pipe off somewhere to me..

hope that is all it is

JGM

StickyMicky

ok

intercooler and such off
no loose pipes

started it up, same noise, sounds like bearings that are totaly screwd and have no grease on them

****

Riftzone

i did read a post on here not so long back with similar symptoms but it was a whistle, caused by a leak in a turbo gasket somewhere. the pressure of the escaping thru this small gap produced a whistling sound. is that a possibility ?

StickyMicky

well

i rang round a good few places for a second hand unit, nobody had one in

few places are going to ring me back with prices

i found a td04 for £70 so i have bought that to fit tomorrow, this will get me back on the road so im good for work on monday

i drove my car about 20 miles to pick the new turbo up

car drove fine apart from the dyson hoover noise from the turbo, no boost at all = slow car and good mpg

when i came back i noticed the sound had changed, seamed like the turbo wasnt spinning as much, and there seams to be a bit of a scraping type noise now

i will be taking it off 2morow for a proper inspection

i have a funning feeling that either the nut has came of the end of the inlet side, or the shaft has sheared?

seams like the turbos spinning fine but its not pushing anything out

plausible thereoy me thinks, anyways while coming home i had a even better idea

would it be possible to convert my ihi turbo into a hybrid?

StickyMicky

im still after advice

how is my car going to respond with a td04 fitted instead of its ihi vf? is it going to make it a lot slower and such?

a few searches have shown me that its limit is about 300bhp?

StickyMicky

lol turbo is making no noises what so ever now
i think its siezed up

its died its death
RIP

i want a front entry td05 for next year

Brun

Update?

StickyMicky

update is im going to have my cup of tea and sum toast then im going to rip it off and throw it against a wall

and i might set fire to it

will update properlly this afternoon
i have a sneeky feeling i know whats the matter with it

Brun

Awwwwwwwwwwwwwww
In future Sticky must rise at 6am so there is news for Brun at 9.30

StickyMicky

i need sum help

how the **** do u get them 10mm nuts of the bottom of the turbo
i think its the outlet for the oil

thats all thats stopping me, ive got one out i just cant seam to reach the other


ohh yeah mini update
the td04 is fooken tiny compared to the one im taking off
and it looks like it started dumping oil into the intercooler last nite as when i removed it there was more oil then usualy (like a lot)

this cars gonna be faster with NO turbo fitted then the td04

im disapointed allready lol

StickyMicky

ohh yeah
all downpipe nuts and uppipe nuts came off soooo easy it compleatly suprised me

StickyMicky

is this why my turbo was maiing a strange sound



could this be rerfurbished and made into a hybrid? or is it totaly fooked?

bear in mind the cost of a td05 conversion, which would be a better option?

Brun

Oooooooooo nasty

Delboy2

Glad you have found the cause of your problem but I would be a little concerned where the broken pieces of compressor wheel have gone have a look in the intercooler


[Edited by Delboy2 - 11/15/2003 12:36:48 PM]

StickyMicky

i shook the intercooler about a lot and nothing came out

im going to take the intercooler back of tomorow as i havnet fitted any heat shields and such, and one of the intercooler brackets isnt fitted anyway

ill give it another shake
i suspect the bits of turbo are actualy inside the turbo as it wasnt very free when i tried to turn it

now
the car
it drives "diffrent"
it seams a lot more punchy as it comes on boost (and spools up at about 2750 rpm)

the turbo whine is like a little dentists drill lol, totaly diffrent sound from the ihi

the recirc dump valve is makeing a lot more noise, when useing low amounts of boost and light throttle, if i back of then its making a chatter sound (i have the recirc dump valve preasure set at approx 20 psi)

ive set the dawse device @ 1.2 bar boost for now, its really hard to make a comparison as i was last driving it with no turbo at all so anything faster then walking pace seams like greased lightening at the moment

i belive about 1.2/1.3 bar is the maximum from this turbo to keep it safe?

it will do for over the christmas period anyway, the i can think about upgrading it back to sumthing bigger

good days graft me thinks

AlanG

Have you still got the original air filter set up or an aftermarket induction kit?
Maybe advisable to check the inlet end for the bits that are missing.

You don't want it getting sucked back up and into the turbo again!!

Alan

AlanG

It also looks from the picture that the nut has came off the end of the compressor wheel, so have a good rummage around for that.

This would most probably be the likely cause of the failure.

Alan

StickyMicky

the nut is still there mate

it was the 1st thing i checked for, the car would chatter a tiny little bit on lowish boost and part throttle as i had set the dump valve preasure quite high

i think its just mangled the blades over time and then all of a sudden went kapoooooot

StickyMicky

and i have the original air filter setup except theres a k&n panel filter installed

AlanG

I lost a nut on the end of mine on my last turbo failure and found it at the air filter

It's quite a big bit of blade that's went AWOL, so hope it did grind itself into a pulp and isn't still kicking about.

Take it you cleaned everywhere that airflow can go to make sure it'll be alright now.

Alan

StickyMicky

i cleaned as best as i could

i did not think that the parts would travel back up to the air filter?

surley they should be sucked downwards towards the turbo?
i will be taking the turbo apart as best as i can 2morow till find my elusive metal bits

you have got me really worried now

AlanG

I didn't think it would either when my last one failed, but couldn't find any bits in the usual places.

But i did know the nut hadn't gone through the turbo cause there isn't any physical room for it to go through, so had to be on the inlet side, hence the comment about the blade, or the size of the bit that is missing.

If the car's running alright, don't worry, but have a quick look between air filter and inlet pipe.

Alan

vulnax999

iTrader: (7)

What do you think caused the damage in th first place?

The dump valve pressure of 20 psi - isn't that a bit high, when running 1.2- 1.3 bar? Could the boosted air on throttle closure not escape via dump valve and stall the turbo wheel, breaking the blades? I think I read on here that IHI turbo's are quite fragile re: no / set too high pressure dump valves.

The TD04 is stronger, and certainly spools up far quicker! Got one on my WAgon .. rather cute and quick!!

StickyMicky

i belive the problem was infact just as u mention

the preasure is quite high but if u run 1.2/1.3 bar then u would need a higher preasure anyway or it would leak under boost??

the noise didnt start as i pulled away from the junction it happend once i had backed off and hit the throttle again.

lesson learned

StickyMicky

ok

i have stripped it all down,it apears that the main turbo shaft is offset to one side, im asumeing the internal bearings collapsed or genraly fooked up, this would shoved the blades to close to the internal walls and smash them up

dunno why the main shaft went like this?
stripped the turbo down and found none of the blades

stripped the maf and airfilter of and found nothing except 2 peices of metal about 1mm x 1mm in size, ran a hoover round everything including the inlet pipe
nothing

then i took the intercooler back off, took of the Y pipe and the bolt on metal sections

i found nothing either
it must have simply been ground up and made invisible

refitted the heatshield under the fluid resivoir, ive left the turbo heatshield of for now, and gave the engine a good jetwash to remove all the grubby marks

downpipe seams to be leaking under the car so ill have the gasket replaced when i get sum time

part fromm that it seams fine, cant work out where them dam blades have went

AlanG

Looks likely to be part of the blades.

When i had a VF22 a long while back, the turbo suffered from compressor surge on track and caused the blades to stretch, hit the cover, break off and that caused the bearing to fail and give what you have just now.
Unlikely the bearing failing and causing the blades to break, though possible especially if there has been poor servicing in the past and/or poor oil supply to turbo.
The oil feed pipe, though looks adequate in size, actually has a 1mm bore hole as it joins on to the banjo fitting (turbo end), so could be possible this is/was blocked and hence starved the turbo of lubrication.

Alan

[Edited by AlanG - 11/16/2003 3:41:18 PM]