30th t/a

iTrader: (51)

Ok I just car my car running. when I start the car, there is a high pitch sound I can hear. I removed both turbos and the I couldnt hear the sound anymore. The compressor wheels spin perfectly. I am running a scavenge pump and I installed a clear return line so I can see the oil being pumped. Now I am only running about 2 feet of down pipe, thats it for the exhaust (for now). What could this noise be that Im hearing? I was told the bearings could be bad but if that was the problem I would be able to feel that when I spin the compressor wheels.

thanks for any help

TS6

iTrader: (41)

Turbos whistle..........

30th t/a

iTrader: (51)

thats what i thought but then I have people telling me there shouldnt be any whistling from the turbos at idle...only at full boost. I thought maybe since I only running 2' of exhaust, the turbos whistling would be louder than a car with full exhaust.


Those of you that experienced turbos with bad bearings, did your car make a weird high pitched sound?

Superman09

iTrader: (65)

as you could hear in my idle vid, when i only hit 1000 rpms you could hear those sucker whistle... maybe with your nicer motor its spinning them even more at lower RPM. Pending where your idle is at, it might be the turbo whistle.

TNTramair

iTrader: (15)

post up a vid with some quality sound so we can hear it if ya can. i have a high pitched noise myself that allmost sounds like a brake squeal and only happens at about 1200rpms or so. im thinkin its vacuum related so i need to go back over those lines. i checked the turbos and there is no play in either one.

TS6

iTrader: (41)

With 2' of exhaust you're gonna hear the turbos spin.

30th t/a

iTrader: (51)

Hey Jon (Superman09) can you post up that in car vid that you sent me last night with open DPs. In that vid I could hear the high pitched sound when you slowly rev it.



hey guys the vid is below, right at the 19 second mark you can really hear that sound in talking about.

Superman09

iTrader: (65)

http://www.fquick.com/videos/Twin_Turbo_Whistle/1565