My turbo sounds like a ricer...is that normal? - Ford Powerstroke Diesel Forum
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Old 03-05-2010, 07:20 PM
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My turbo sounds like a ricer...is that normal?

This has just started happening this winter. Let me tell you about it. In the range of 1250-1750 rpm, something in the turbo emits a higher pitched chirp between intakes, like those "boom turbos" on little race cars.

I know our motors all develop their own unique characters, but ol' Percy is almost 9 years old now. It seems to me like the time for the turbo to announce its natural quirks has long passed.

Is this something I should be concerned about? Anyone have the same situation? I don't really mind the sound itself, but it's just that it's a recent thing that has never happened before.
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Old 03-05-2010, 07:34 PM
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take the intake off and check your comp wheel. Also, check for shaft play in and out, up and down. this will tell you if its alright or not.

There should be no play up and down and VERY little in and out, like less than 1/16th of an inch.
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Old 03-05-2010, 07:41 PM
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Alright, I'll have to look around a bit to figure out how to do that, but I will do so. If I have a problem searching the forums/internet I will ask here.
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Old 03-05-2010, 07:41 PM
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Thanks too, btw!
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Old 03-06-2010, 05:57 AM
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the intake is where the filter mounts to the side of the turbo. should be 5/16 gear clamps and a bolt or two. then you can see the inside of the turbo and the compressor wheel.
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Old 03-06-2010, 07:41 AM
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Quote:
Originally Posted by HVAC SuperTech View Post
take the intake off and check your comp wheel. Also, check for shaft play in and out, up and down. this will tell you if its alright or not.

There should be no play up and down and VERY little in and out, like less than 1/16th of an inch.
I think Up & Down play is actually normal.... (In & Out is not)

Because of the high speeds turbos turn at, the stocker is run on a layer of oil instead of a bearing (it's actually a bushing). SO, when there is no oil pressure, there is some clearance between the shaft that connects both sides and that bushing.

Look at the housing you remove, at the "hole" in the middle, for evidence of contact from the compressor wheel. That's the best indication that the bushing is worn because it's a pretty tight-fit there.
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