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ive been listening around my engine bay intensely recently as theres a strange scraping sort of sound going on. the front end bearing of my gearbox is very worn so thats making a noise but there seems to be a scraping sound coming from near the turbo area.

its sounds like the wheels are scraping against the turbo housing. is this realistic? the turbo still spools up well and theres no loss in power... could this scraping noise not be the turbo? its driving me crazy!!

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as macka said ive got a t04. i swear the scraping sound is coming from the turbo! but their appers to be no side effects, and when you stand over the engine bay and rev the engine it goes away... i really dont understand. macka mayeb you should swing by a have a look hehe:burnout:

have u leaned it out the turbo by running hi-boost and not having enough fuel?

if so, you have probably melted your turbine wheel and caused the turbo to go out of balance which might be causing the exhaust wheel to hit the housing.

check the shaft for any movement (in/out & left/right) from the compressor side, or get it checked out by a turbo specialist.

good luck.

nah i havent leaned it out that much

im running 12-13psi with a bigger fuel pump, and AF's around the 10:1 mark.

i might get it checked by a specialist... i dont know if im being paranoid or not though, because sometimes i hear it and sometimes i dont. also the front end bearing of the gearbox is gone and thats making noise around the same area so im not sure...

if it was scraping against the housing would it

a) be loud

B) occur under all conditions?

Guest Cob@lt60

Hi dude,

My standard R32 turbo started doing the same/similar thing the other day.. It makes a squeeling/scraping noise only when the boost starts coming on (around .5 bar)

I'm taking mine to the mechanics on Wednesday 16th (if it lasts that long).. They said perhaps the exhaust wheel is unballanced or missing a "vein".

It's slowly getting worse i think.. :);) *tear*

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