Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-20-2008, 07:10 PM
Registered User
 
Join Date: Nov 2005
Posts: 73
Turbo Play

1984 300D

I pulled the air intake off the turbo and discovered that I can grab the end of the turbo shaft and wiggle it. The car is down on power, but I believe that the turbo still does function to some limited degree.

What of the ramifications of the wiggle room? Turbo rebuild, possibility of metaly bits getting fired into the engine?

You can move it probably 1/16 of an inch in all directions I would say.

__________________
1984 300D Turbo.
Reply With Quote
  #2  
Old 07-20-2008, 07:13 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: Eastern TN
Posts: 20,841
I'm no exprest but I wouldn't worry about it too much until there is perceptible in-and-out play and obvious signs oil is leaking past the turbine seals into the intake manifold or out the exhaust (continuous smoke under load).

Sixto
87 300D
Reply With Quote
  #3  
Old 07-20-2008, 07:14 PM
Registered Hack
 
Join Date: Mar 2008
Posts: 4,642
axial play is what complicates a rebuild. Wiggling perpendicular to the shaft is rebuildable; but if it gets too bad, like you said - metaly bits.

Which, knowing the intake manifolds on these engines, would probably get enlodged in the devil's food cake (sludge)

it a slowwwww process.
__________________

Reply With Quote
  #4  
Old 07-20-2008, 07:18 PM
Registered User
 
Join Date: Nov 2005
Posts: 73
I do not remember if I can push the shaft in and out, I will go check immediately. But you are saying that this means that the turbo does need a rebuild correct?
__________________
1984 300D Turbo.
Reply With Quote
  #5  
Old 07-20-2008, 07:19 PM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
With 1/16" of play in either direction the compressor wheel should be very close to, if not contacting the sides of the compressor housing. If this happens the rebuild will get quite a bit more expensive and bits of aluminum begin to be blown into you engine so I would not let it go any farther. Try twisting the shaft as you wiggle it to see if it rubs.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
  #6  
Old 07-20-2008, 07:32 PM
Registered User
 
Join Date: Nov 2005
Posts: 73
The shaft does not move in and out, and the travel is more like 1/16th of an inch or so total from side to side, not in each direction.

Am now heading out to see if I can feel a connection between the compressor wheel and housing, which means I will be eating my popcorn with extra sooty fingers.
__________________
1984 300D Turbo.
Reply With Quote
  #7  
Old 07-20-2008, 07:43 PM
Registered User
 
Join Date: Nov 2005
Posts: 73
I can not detect any connection between wheel and housing, seems to rotate smooth.
__________________
1984 300D Turbo.
Reply With Quote
  #8  
Old 07-20-2008, 07:46 PM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
That's good. It sounds like it is time to start thinking about a rebuild. There are kits for sale on ebay to rebuild these turbos. I have not used them, but others on the forum have with success I think. If you are looking to modify the car now would be a good time to swap to a VGT or holset HX30.

__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:51 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page