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  #1  
Old 02-06-2006, 02:12 AM
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How can I tell if the turbo is dead ?

I have a turbo from an 82 300SD that was driven without oil in the crankcase. ( ya just gotta love blonds ! )

I would assume that the turbo is dead also. But I have learned that my assumptions can be wrong.

What would you look for, to tell you if the turbo was usable or not ?

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Old 02-06-2006, 02:24 AM
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Quote:
Originally Posted by RichC
I have a turbo from an 82 300SD that was driven without oil in the crankcase. ( ya just gotta love blonds ! )
I know what you mean, i went out with a blonde for a year
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  #3  
Old 02-06-2006, 02:31 AM
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See if the impeller spins...
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I'm not a doctor, but I'll have a look.

'85 300SD 245k
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Old 02-06-2006, 04:42 AM
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The impeller does spin freely.

It also has some play , side to side and in and out.

How much play is too much, or is any at all too much?
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  #5  
Old 02-06-2006, 01:00 PM
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Rich,

Some end play is OK but side play is not good for a device that may rev up to 100,000 RPM.

P E H
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  #6  
Old 02-06-2006, 01:05 PM
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Any side to side play indicates that the bearings are toast. You need to rebuild it, otherwise it's going to drink gallons of oil as the side play gets worse, until it finally hits the housing.

Ask me how I know.
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Old 02-07-2006, 12:55 AM
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How hard is it to replace the bearings?

I would love to stick this turbo into my 81 300D.
How much of a PITA is it to do?

I have an 82 300SD parts car for the parts needed.

Has anyone added a turbo to thier normally asperated 300D?

Thanks
RichC
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Old 02-07-2006, 01:04 AM
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Quote:
Originally Posted by RichC
How hard is it to replace the bearings?

I would love to stick this turbo into my 81 300D.
How much of a PITA is it to do?

I have an 82 300SD parts car for the parts needed.

Has anyone added a turbo to thier normally asperated 300D?

Thanks
RichC
I have not done it personally, but they are not all that difficult to rebuild if you can get the rusted bolts out. I need to do the KKK off the '86 SDL very soon.

The n/a engine is not designed for the turbo and lacks several important upgrades such as the oil squirters under the pistons to get rid of the excess heat. The engine wouldn't survive very long if you used the turbo to any great degree on the n/a engine.
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Old 02-09-2006, 05:06 AM
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Thanks guys for the info.

I really like this forum.

RichC

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