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 03-27-2009, 06:19 PM
Dionysius
 
Join Date: Jan 2006
Location: Seattle WA
Posts: 261
Question Is it OK to run engine without air pan U tube on the turbo?????

Car is 1979 300SD 116

This is my first Turbo and my question is this.....

Can I start and idle the engine without the U Tube (and airpan) installed??

The turbo impeller will push air out but is it dangerous to do this?? Other than avoiding the spinning impeller are there any other things to be aware of??

Like I say this is first Turbo for me.....

Can I observe the expected air movement in this way?? If so how much??

__________________
Dionysius
Reply With Quote
  #2  
Old 03-27-2009, 06:25 PM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
It will not cause any harm if it is not dusty that day. Just watch out for the compressor wheel moving at several thousand RPM. It will suck air in, not blow BTW.
__________________
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
  #3  
Old 03-27-2009, 06:47 PM
Dionysius
 
Join Date: Jan 2006
Location: Seattle WA
Posts: 261
Quote:
Originally Posted by bgkast View Post
It will not cause any harm if it is not dusty that day. Just watch out for the compressor wheel moving at several thousand RPM. It will suck air in, not blow BTW.
Thank you. Yes it will suck not blow...you are so correct.

So mechanics do this on a regular basis when working on the engine????
__________________
Dionysius
Reply With Quote
  #4  
Old 03-27-2009, 08:21 PM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
Be careful that the turbo doesn't inhale anything harmful (rags, dirt, leaves, tools, fingers, etc.). It won't be spinning fast with the engine idling but even so . . .
__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
Reply With Quote
  #5  
Old 03-27-2009, 09:21 PM
Registered User
 
Join Date: May 2006
Location: South Louisiana
Posts: 214
Just out of curiosity, why would you do this? It seems like a poor idea even if you keep rags and fingers out. That's what air filters are for. I don't think anything is observable except the fact that its turning.
__________________
1983 CD
1958 Studebaker Packard (being resuscitated)
Reply With Quote
  #6  
Old 03-27-2009, 10:20 PM
LUVMBDiesels's Avatar
Dead on balls accurate...
 
Join Date: Aug 2006
Location: Red Lion,Pa
Posts: 2,207
I have run the engine in the 300SD for short periods without the air cleaner or U tube while I was checking for turbo return line oil leaks. You have to make sure that EVERYTHING is well away from the inlet.

Never take it on the road without an air filter in place.
__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad
Reply With Quote
  #7  
Old 03-28-2009, 03:39 PM
Dionysius
 
Join Date: Jan 2006
Location: Seattle WA
Posts: 261
Exclamation

Quote:
Originally Posted by pselaphid View Post
Just out of curiosity, why would you do this? It seems like a poor idea even if you keep rags and fingers out. That's what air filters are for. I don't think anything is observable except the fact that its turning.
While I work on an engine in my Garage I like to have all the obstruction of the airpan etc stripped off. It is all about access and being able to diagnose without having to have obstruction in my way. Maybe it stems from when I used to have carbs. The first thing that I ever did was remove all "unnecessary" hardware. On my other Benzes that have old York air conditioners, guess which thing got permanently removed within weeks of my ownership....
__________________
Dionysius
Reply With Quote
  #8  
Old 03-28-2009, 09:00 PM
Dionysius
 
Join Date: Jan 2006
Location: Seattle WA
Posts: 261
Thank you all for the replies........

Thank you all for the replies........

I like to take my socks off before I wash my feet.......the analogy I use to baring the engine down before I am ready to work on it.

__________________
Dionysius
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 03:13 PM.


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