Turbo Noise On My R33

[NiSmO`ChiCk]

hey guys

so i blew my turbo on my r33 at the start of last year and got it replaced with a stock r34 turbo and its been running fine ever since..

but now just after this weekend, wenever i accelerate and hit boost almost everytime i get this really really loud siren noise coming from my turbo.. and its not just a little whine or anything either.. its a massively loud siren like noise like ambo/police siren.. and people stared at me wen i was driving to work this morning thinking ive got some siren sound im playing on purpose or something.. lol

anyways i have no idea wtf is going on but my guess is ive probably f**ked my turbo again..

oh and my cars pretty stock.. running stock psi.. no fmic etc..

any help appreciated

thanks

jenna

[R33GOD]

sounds like that one is on its way too.

i gought a second hand 33 turbo cause my hiflow blew and i get the same noise.

just run it on stock boost. if it goes it goes.

[MBS206]

Sounds like a boost leak or gasket blown

[skiwhine]

let me know when ur headlights start turning red n blue

[legend01]

I'd go with the boost leak

[GTR-80Y]

Had the same thing on my 33gtst....freaky noise aye? My turbo was on the way out....but at the same time i blew my dipstick out and dropped a cylinder or 2. Hopefully its jus ur turbo....strange on stock boost tho.

[sl33py]

I just blew my (stock) turbo (on stock boost) casually driving home at normals revs and speed. I limped it to my mechanic, and when the heard the "whizzing" noise mine made when I revved it, he instantly said the turbo is dead.

Hope you have some savings!

[NiSmO`ChiCk]

thanksss for the replies

so i got it towed and its going into the mechanics later this week.. doubt its completely dead but it may be on its way out.. anyway good chance to upgrade which i was planning on doing soon.. hopefully something can bolt straight on.. hmmm about that.. anyone know what turbo does? does a t28?

Edited December 3, 2007 by NiSmO`ChiCk

[Fry_33]

My friend had this (siren noise) happen to his R33 Series 2 turbo. We're pretty sure that it was a bent shaft at the compressor end and the Nylon comp wheel hitting the housing.

Time for another turbo

[crofte]

HKS kits from nengun.com from around $2400 landed in aus. Go anything HKS.

[Tough R34]

same thing just happened to me today!!!

get no boost at all and the noise happens even with vacuum??

[Spunky Munky]

I think the fins are chipped or cracked in your turbo... if this goes, you have no choice but to replace it... damn, a mate had a similiar problem... it's more like a high pitch tone then anything else.

[limpus]

I got the same sound when i installed my 2535 a year ago...siren sound was loud as!! i checked and rechecked everything on the intake side of the engine and all was good...funnily enough...the sound went away when i got a resonator welded onto the exhaust...this was done for a differenct reason but it stopped the wailing...so for me it was probably some sort of resonance through the pipes...and it wasn't the turbo dying...its run 1.2-1.3 bar for a year since then and its still ok...

Take what you will from my experience...i'm not saying its definitely the cause but it was for me...

Edited December 5, 2007 by limpus

[joeyjoejoejuniorshabadoo]

For anything but another stock turbs you'll need a host of supporting mods...

ecu

fuel system

clutch

maf

fmic

panel / pod

etc

[EvilINGT]

Had this happen to me, a bit of the exhaust wheel chipped/came off and unbalanced the shaft, so was the lovely sound of the bearings eating themselves , i didnt want to accerlerate anywhere, so embarassing. Lucky i had already bought a GCG R34 highflow for $2k off the SAU forums , it even came with braided lines plus all the other bits.

cheers

Evil

[Krishy]

i would go with another stock turbo unless you have done those host of mods....to support it...good luck mate

[GTR-80Y]

Limpus: some of the 25 series HKS turbos like to make funny siren noises, its jus the way they spool.

Spunky monkey: I've had the mosquito whine from a turbo but i've also had this full on siren noise. It has to be heard to be believed....very freaky stuff haha.

[iz32]

Ive had the siren sound for a year now on a hks turbo.... had it rebuilt twice cos i though it was broke but its still there.... it went away briefly with a new higher HP tuned eprom (the turbo induction sound went really quiet and the siren sound dissapeared but the car went way harder)

then the siren came back after i did an engine swap (done to fix engine oil leaks) which also brought ping ping caused by timing issues at higher boost....

EMS now installed and getting tuned on wed so if the siren goes away im gonna put it down to engine specific timing setup in conjuction with afr's somehow.

I wouldnt worry unless there is shaft play or blades touching the housing......

the siren sound is much different to the grinding sound of blade on housing

[STR8E180]

on a side note has any one heared a T51R spooling up? it sounds like a real high pitched siren

[limpus]

  GTR-80Y said:

Limpus: some of the 25 series HKS turbos like to make funny siren noises, its jus the way they spool.

Spunky monkey: I've had the mosquito whine from a turbo but i've also had this full on siren noise. It has to be heard to be believed....very freaky stuff haha.

Yeah...i put it down to some weird resonance through the pipes or something like that as it only happened after i put in the original HKS dump pipe...then at a later date i get a resonator welded onto the catback and then the noise went away...