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Old 02-10-2019, 11:25 AM   #1
snappymike
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Default Turbo Meltdown

I bought a car on the cheap from someone knowing that it wasn't making boost. It was a 1991 745. I took the intake hose off and the turbo was seized. I started investigating further and what I found after removing the turbo was shocking. The entire area around the wastegate on the hot side was melted down.

https://www.instagram.com/p/BtrPShHh...=1dlkqsh1uzjn2

I will be watching for signs of a lean condition once I get this rebuilt 15g installed.

Anyone else ever seen anything light this?
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Old 02-10-2019, 11:49 AM   #2
swedefiend
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Quote:
Originally Posted by snappymike View Post
Anyone else ever seen anything light this?
I've never seen one melt the entire housing.

I'd suspect a bad wastegate actuator to be the source of this destruction. But, I could be wrong.
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Old 02-10-2019, 04:35 PM   #3
955IsAlive
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I think I'd check the exhaust for blockage too.
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Old 02-11-2019, 12:35 AM   #4
swedefiend
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Originally Posted by 955IsAlive View Post
I think I'd check the exhaust for blockage too.
Wouldn't hurt to look at the catalyst.

Although, I doubt it is the root cause; all of that liquified metal had to go somewhere, right?
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