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Strange whistling sound on high boost.

Tomak

By Tomak,
in Engines & Forced Induction

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Tomak Collaborator

Tomak

Posted
Posted

Hello,

I just got a new setup in my r33 with Garrett GT3076r turbo and stock rb25det engine. I purchased everything new, new turbo, new piping and all the wires. So my car was  driving ok for about 2000km and after 1 month the strange sound is coming from the engine bay. 

I tried to record the sound with my microphone on gopro to diagnose which part of the engine can it be. The sound is coming near the turbo.  Around the turbine the sound was the strongest so far.

I was checking  some components around the engine to look for a boost leak because my mechanic claims that this is from the cold side. We could not find anything for 2 days. 

Now tomorrow some guy is going to check my turbine and i am expecting the worst that i will have to buy a new turbine that has only 2000km on it. ;/

Is this possible that this sound comes from turbine rotor? Anybody experienced something like this before?

The sound is very scratchy and sharp and its getting worst every single day and its very laud from outside. Its so loud inside of the car that i cant hear my exhaust.

My tourbine is still loading the boost so far and i have this sound from 2 weeks. Dont know what the hell is this.

Here is the link to the 3 videos with that sound on youtube, thanks for any suggestions. I could not find on you tube anything simillar to my case.

 

 

Robocop2310 Experienced

Robocop2310

Posted
Posted

I would second GTSBoy's comments - exhaust manifold most probably, followed by broken turbo gasket and I'll add something to do with the BOV. 

I listened to a few of your clips and noticed that the strange sound happens toward the end close to where the blow off valve opens so perhaps loose hose or something wrong with your BOV. Suggest you check for any leakage or loose cracks along the above.

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