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Discussion Starter · #1 ·
whenever i press on the gas and my turbo spools it sounds like an alien whistling that the only way i know how to describe it, I have a riffraff 6637 and kc turbos balanced assembly put in it with jelibuilt hydra tunes. Anybody know what could be the cause?
 

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Turbos make whistling noises.
 

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So, I would be looking at the plumbing. If the turbo fins are good, then you may have a leak, or something lodged in the plumbing. It's not hard to make an adapter so you can pressurize the plumbing. Here's one example...I used a PVC cap and a schraeder valve.
 

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Don't rule out the serpentine belt slipping, how long since it was new?
 

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Discussion Starter · #6 ·
So, I would be looking at the plumbing. If the turbo fins are good, then you may have a leak, or something lodged in the plumbing. It's not hard to make an adapter so you can pressurize the plumbing. Here's one example...I used a PVC cap and a schraeder valve.
i also found out my turbo has in and out play which but i have brand new beatings in there.
 

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Then something is worn in the turbo that the bearings can't fix. Maybe something rubbing inside is causing the noise?
 

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2013 F350 lariat supercab shortbed in 2 tone
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i had a 7.3 issue similar to this, turned out that the side to side shaft play allow the exhuast turbine to rub into its back plate, over time there was a good 16th of an inch of metal ground off the veins of the turbine...
 
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