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Sreaming Turbo?

r32mspec

By r32mspec,
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r32mspec Contributor

r32mspec

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My 32 has a loud high pitch scream comming from, well I thought the turbo, orig, I thought it was the belts, factory ones were cracked and hard, changed belts to bosch items, but noise continued, it at first only happened under big loads at 4500rpm foot flat but now screams at lighter loads 3800rpm 2/3 throttle about 5psi, I can still get full boost with hardly any throttle without it, it is definately boost related. A friend however today told me that it could also a split in a plumbing joint, has any one ever heard of this happening before?

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r32mspec Contributor

r32mspec

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If it was the turbo but, and i am still getting boost what would it be bearings? I just read a fast fours mag artticle about the bbearing r33 turbo and they recon the bearing unit is pretty good, Quote "should out live the engine". I don't have a turbo timer yet but always give it 3-5 minutes on cool down after a flogging.

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r32mspec Contributor

r32mspec

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Yes, had my boost guage reading from the plenum, mabye should have set it up on the wastegate actuater pipeing as i think their is pressure drop through all the intercooler plumbing and the actual boost at th turbo's outlet would have been more like 15psi which is apparently too much. Also the cheap style boost control valve i'm ussing can give boost spikes to 15.5psi my guage.

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Guest nismogtsx

Guest nismogtsx

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Mine is due to a japanese man filing the front tip of the turbine...

Aparentlly they do this for rice factor. The air rushing past causes a very high pitched turbo squell.... I have had mine now for 12 months running 10psi and have had no turbo trouble and many have said it will let go soon.

I will drive it til it dies... Or i win lotto

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  • 1 year later...
KILL HSV Proficient

KILL HSV

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It was the turbo, Just went out for milk and came home with no boost, recon my cat is full of ceramic exhaust turbine blades, Just for reference was running 14 psi at the plenum apparently to much, still lasted for 3months. Time for something bigger.

r u getting a new turbo? or r u just going to get a steel wheel for the exhaust side and get it repaired?

did u have the car when it was on stock boost? or did u buy like that? and if u boosted it, then was the car running well on stock boost, cos i'm planning on leaving mine on stock boost for a while, until i either change the wheel or the turbos for something quicker, also when u fix it can u post up how the engine runs, cos another post here says that shit can get into the engine and kill it.

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