Turbo Exploded carnage pics - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Insert BS here A place to discuss anything you want

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 09-01-2011, 09:43 AM   #1
Moderator
Thread Starter
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,680
Total Cats: 1,561
Default Turbo Exploded carnage pics

One of my customers showed me his latest part that needed replacing. It is a Borg Warner (I think) turbo off of an articulated wheel loader made by John Deere. I thought you guys would appreciate the carnage more than most people.

Post mortem indicates that the turbine shaft, though bent, still turns and is not seized. Id does drag a bit, but I would expect that from looking at it. As of now, the initial cause is up for speculation. My apologies for not having pics of the turbine side.

Name:  P1010181.jpg
Views: 38
Size:  197.7 KB

Name:  P1010182.jpg
Views: 17
Size:  210.4 KB

Name:  P1010183.jpg
Views: 17
Size:  199.9 KB

Name:  P1010184.jpg
Views: 88
Size:  191.1 KB


His intercooler has to be replaced because it is full of metal and oil.
sixshooter is offline   Reply With Quote
Old 09-01-2011, 12:27 PM   #2
Senior Member
iTrader: (5)
 
Join Date: Apr 2007
Location: Atlanta
Posts: 581
Total Cats: 33
Default

Good god - looks like a bomb went off in there.
nickt93 is offline   Reply With Quote
Old 09-01-2011, 04:03 PM   #3
Junior Member
iTrader: (1)
 
Join Date: Aug 2008
Posts: 373
Total Cats: 36
Default

Quote:
initial cause is up for speculation
Compressor wheel hub burst due to low cycle fatigue.
JKav is offline   Reply With Quote
Old 09-02-2011, 11:09 PM   #4
Senior Member
iTrader: (3)
 
Join Date: Jun 2008
Location: Port Orchard, WA
Posts: 620
Total Cats: 4
Default

Something came loose in the intake tract? (other than the compressor wheel...)
Rennkafer is offline   Reply With Quote
Old 09-05-2011, 07:20 PM   #5
Moderator
Thread Starter
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,680
Total Cats: 1,561
Default

Quote:
Originally Posted by JKav View Post
Compressor wheel hub burst due to low cycle fatigue.
Please elaborate. I'm very curious.
sixshooter is offline   Reply With Quote
Old 09-08-2011, 05:23 PM   #6
Junior Member
iTrader: (1)
 
Join Date: Aug 2008
Posts: 373
Total Cats: 36
Default

Lots of excursions from low to very high speed eventually weakens the wheel til it goes kablooey.
JKav is offline   Reply With Quote
Old 09-11-2011, 01:16 PM   #7
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

This picture really raises my kersplosion expectations for my borg turbo.

JKav, I don't understand. By low/high excursions do you mean a situation like not using a BOV?
Faeflora is offline   Reply With Quote
Old 09-12-2011, 11:36 AM   #8
Junior Member
iTrader: (1)
 
Join Date: Aug 2008
Posts: 373
Total Cats: 36
Default

No, I mean situations like if you run a turbo to high boost pressure (aka speed) and back to very little boost and repeat this several thousand times. You'll never seen LCF on a gasoline application, boost/speeds/duty cycle are far too low to stress the wheel that way. It's on diesel applications like transit buses and loaders that see only full whack, and then nothing, and then full whack, over and over again for their entire lives that experience LCF.

LCF is why some diesel apps went to billet wheels, and then titanium. Billet wheels in the aftermarket are for ease of manufacturing in low volume, and bling.
JKav is offline   Reply With Quote
Old 09-12-2011, 12:45 PM   #9
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by JKav View Post
No, I mean situations like if you run a turbo to high boost pressure (aka speed) and back to very little boost and repeat this several thousand times. You'll never seen LCF on a gasoline application, boost/speeds/duty cycle are far too low to stress the wheel that way. It's on diesel applications like transit buses and loaders that see only full whack, and then nothing, and then full whack, over and over again for their entire lives that experience LCF.

LCF is why some diesel apps went to billet wheels, and then titanium. Billet wheels in the aftermarket are for ease of manufacturing in low volume, and bling.

Ah ok, thank you for the explanation. I never thought about the diesel application.
Faeflora is offline   Reply With Quote
Old 09-12-2011, 12:50 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,892
Total Cats: 1,792
Default

was this yellow turbo on a yellow bus?
Braineack is offline   Reply With Quote
Old 09-12-2011, 07:37 PM   #11
Newb
 
Join Date: Jan 2009
Location: Ohio
Posts: 17
Total Cats: 0
Default

Did that effect performance?
hosspoons is offline   Reply With Quote
Old 09-14-2011, 12:48 AM   #12
Moderator
Thread Starter
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,680
Total Cats: 1,561
Default

Quote:
Originally Posted by hosspoons View Post
Did that effect performance?
Naw, dude it's running great. Hell, we didn't even take it off to take the picture.

And yes, this was on a wheel loader that probably went from vacuum to 40-50 psi and back to vacuum constantly for years of operation. I did not realize that could contribute to this type of failure. Pretty cool.
sixshooter is offline   Reply With Quote
Old 09-14-2011, 06:32 AM   #13
Elite Member
iTrader: (12)
 
Join Date: Nov 2009
Location: Harpers Ferry WV
Posts: 1,521
Total Cats: 20
Default

Wow that looks great. This looks bad on borg warner but when you look at most stock diesel turbos they are small compared to engine size and they run them at around 30 psi and up so I can see after years of construction this could happen. It is after all just a cast aluminum wheel.
Sean is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:19 AM.