Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

What are the dangers of replacing my dead turbo.

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  #1  
Old 05-18-2012 | 11:53 PM
HeavyMetalDiesel's Avatar
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Default What are the dangers of replacing my dead turbo.

A few months back i bought my neighbors 1993 6.5L Turbo diesel 2500. Well the turbo works as well as a screen door on a submarine, i mean not a peep. Now, i have the money to get a new one, its in the works and such. Having lived beside this truck for the last 15 years or so, i cant ever remember hearing the turbo spool up, and ive been around it quite a bit over the years. Now my question is, having had the turbo inoperative for possibly years, could there be any issues with simply putting a new one in and firing it up. Intake is perfectly clean, it runs like a champ, always starts up right away, grey smoke on startup.
-Shaggy
 
  #2  
Old 05-19-2012 | 02:12 AM
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how well could a turbo motor run with an inoperative turbo? i would think it would restrict airflow, but im a noob on turbos...
 
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Old 05-19-2012 | 11:11 AM
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nope there should no problem, my truck had a bad vaccum pump for like a year. put a new wastegate on it it ran like a pro. however, if your doing a TM i would suggest a boost gauge and get a pyro gauge as well.
 
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Old 05-19-2012 | 02:33 PM
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How do you know the turbo isn't working? Is the shaft seized or broken, or does it smoke a lot? I'm not familiar with these trucks, but factory set-ups are generally designed to be as quiet as economicly possible to avoid NVH complaints from consumers. You're probably right that it's not working, I just would hate to see you spend a bunch of money to replace the turbo and have the truck continue to behave as it already is. And x2 on the boost and pyro gauges.
 
  #5  
Old 05-19-2012 | 06:09 PM
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6.5's make about 8lbs of boost and you will not hear them over that clatter of that motor.
 
  #6  
Old 05-20-2012 | 12:13 AM
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Trust me the turbo is not spinning at all, the engine is also pushing 405,000km.
 
  #7  
Old 05-20-2012 | 07:40 AM
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It will work just fine. No worries
 
  #8  
Old 05-20-2012 | 10:25 AM
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With that many kilometers, it may have other issues not related to the turbo, though. Just be prepared
 
  #9  
Old 05-20-2012 | 05:34 PM
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I have 5 in stacks with a TM and I can only hear mine under 1800rpm
 
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