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Old 08-01-2013, 12:50 AM   #1
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RB25DET Turbo sound...

I'm getting a crazy loud whinning like sucking noise (best way I can explain it) coming from the turbo. I can hear it from the intake and if I remove the filter its even louder. Also gets louder as I rev. Any ideas? Turbo gone? Started after I stepped on the gas a bit on 7PSI.
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Old 08-01-2013, 02:41 AM   #2
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Escaping of sucking?

Escaping check your gaskets.

It sounds similar some trying to learn to whistle but can'y get it down.
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Old 08-01-2013, 11:31 AM   #3
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The fins could be bent causing it to whistle. Check for shaft play too, maybe bearings going bad and wheel may be slightly touching the housing.
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Old 08-01-2013, 12:53 PM   #4
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Well just checked, 2 or 3 fins have the corner of them broken off... I don't know what could have caused that though. Never went over 7 psi while I had it..
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Old 08-01-2013, 06:16 PM   #5
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Shit could have gotten sucked in...doesnt take much to damage them when spinning over 100,000rpm.
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Old 08-14-2013, 05:00 PM   #6
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Is the turbo a series 1 or 2
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Old 08-14-2013, 11:37 PM   #7
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Quote:
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Is the turbo a series 1 or 2
Series 1....
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Old 08-15-2013, 12:03 AM   #8
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The first signs of my oil pump failure was the sounds my turbo started making.
It was a whizzing/zipping noise that got louder with revs which was most likely the bearings in the turbo dying.
I'm about to post up a rb25 turbo for sale(not the same one that was dying lol)
Check out the for sale section in a few minutes if you're interested.
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Old 08-15-2013, 12:10 AM   #9
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The first signs of my oil pump failure was the sounds my turbo started making.
It was a whizzing/zipping noise that got louder with revs which was most likely the bearings in the turbo dying.
I'm about to post up a rb25 turbo for sale(not the same one that was dying lol)
Check out the for sale section in a few minutes if you're interested.
I actually bought one about 2 weeks ago. Been running strong since then. I don't think it was the oil pump but we will see. I did have the same sound you said but were your blades all chewed up?
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Old 08-15-2013, 12:14 AM   #10
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No the blades were perfectly fine.
I got sent the wrong oil pump. I got a R34 rb26 oil pump instead of a R33 oil pump.
They are incompatible due to the longer crank drives found on the R34.
I had perfect pressure for 500 miles and then it gradually got lower until it wasn't reading at idle.
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