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 11-23-2009, 01:20 AM
Registered Hack
 
Join Date: Mar 2008
Posts: 4,642
An Underestimated Performance Element...



courtesy of Winmutt @ super turbo diesel .com

I replaced the seals on this item yesterday and the improvements are quite noticeable.

The relation of Bowden cable to power output is primarily responsible and continuous power / response from throttle are markedly increased.

... just a heads up / reminder.

__________________


Last edited by jt20; 11-23-2009 at 10:07 AM. Reason: clarity
Reply With Quote
  #2  
Old 11-23-2009, 01:59 AM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
Very nice. What is it and what kind of car does it go on?
__________________

"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
  #3  
Old 11-23-2009, 02:02 AM
turbobenz's Avatar
Registered User
 
Join Date: Nov 2007
Location: Cameron Park CA
Posts: 1,874
Is it at the trans?
__________________
1981 300SD 512k OM603


Reply With Quote
  #4  
Old 11-23-2009, 06:34 AM
Registered User
 
Join Date: Jul 2004
Posts: 7,381
Quite a cryptic post- what is it, where is it located, what engine models, part number? Is it a DIY? Can you describe the job description? Best place to find/buy new seals? Most folks will need this info in order to get this job completed.
Reply With Quote
  #5  
Old 11-23-2009, 07:52 AM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 15,438
I believe that is the connection flange piece between the turbo and intake on a 617. Replacing the seals would prevent air pressure leaks.
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
Reply With Quote
  #6  
Old 11-23-2009, 09:49 AM
Registered Hack
 
Join Date: Mar 2008
Posts: 4,642
Quote:
Originally Posted by MTUpower View Post
Quite a cryptic post- what is it, where is it located, what engine models, part number? Is it a DIY? Can you describe the job description? Best place to find/buy new seals? Most folks will need this info in order to get this job completed.

Sorry about that.

It is the the turbo to intake coupling for the 61x turbo engines. Almost identical to the turbo 60x engines as well.

There are a few ways to DIY:

---easiest and least invasive is to remove the compressor housing without destroying the inlet blades.

---most annoying is to remove the whole turbo as a unit... ugh.


2 large O-rings are replaced, and boost leaks are resolved (for that area)
__________________

Reply With Quote
  #7  
Old 11-23-2009, 10:05 AM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by jt20 View Post

It is the the turbo to intake coupling for the 61x turbo engines.
I look forward to hearing your explanation of how the turbo coupling seals relate to the Bowden cable.

Quote:
Originally Posted by jt20 View Post
I replaced the seals on this item yesterday and the improvements are quite noticeable.

The relation of Bowden cable to power output are responsible and continuous power / response from throttle are markedly increased.
Reply With Quote
  #8  
Old 11-23-2009, 10:28 AM
Registered Hack
 
Join Date: Mar 2008
Posts: 4,642
your sincere curiosity is appreciated.

Turbodiesels from '85 and up may be much more sensitive to related changes in shifting characteristics because of the Vacuum Amplifier (blue saucer).

--------------- Rough outline---------

If you have a great enough boost leak, you are not making 'the expected power' at the flywheel with regards to your throttle position. Similar to ALDA over/under adjustments

If you, like many, adjust your Bowden cable in relation to throttle position, you have have not made an accurate adjustment unless you have accounted for your under / over performance.


A boost leak is not a linear phenomenon; the Bowden cable is. As boost builds, more air finds its way out. The Vac Amp mixes the signal of boost pressure and vacuum and relays it to the trans.

The Bowden cable is moved further as throttle is demanded, but boost does not respond at the expected rate assumed by the trans and vacuum signals.
__________________

Reply With Quote
  #9  
Old 11-23-2009, 11:10 AM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,652
If you have to ask what it is, you haven`t experienced the joy of pulling the manifolds off a 617 Turbo engine.

It`s near impossible to remove the Turbo w/o removing the manifolds. from my experience. then you would need a new manifold gasket, turbo oil gasket etc...

after the manifolds are loosened and pulled back, the coupler slips out with a little twisting and pulling.

John, your TD is a Cali model as I remember, maybe the turbo can be removed easier with the manifold sitting up higher.

I just removed a set of manifolds off a 78 300SD 2 days ago, it`s one of those PITA jobs


Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #10  
Old 11-23-2009, 11:52 AM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
As Charlie surmised, it's easy to remove the turbo from the '85 California version of the OM617 engine. I had mine off when I replaced the trap cat with a test pipe and didn't have to touch the manifolds. The Federal version is another question; removal of the manifolds and turbo as a unit is the recommended method, or so I have read here.

Jeremy
__________________

"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
  #11  
Old 11-23-2009, 12:51 PM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by Jeremy5848 View Post
The Federal version is another question; removal of the manifolds and turbo as a unit is the recommended method, or so I have read here.
I fail to see the logic behind that recommendation.

Quote:
Originally Posted by charmalu View Post

It`s near impossible to remove the Turbo w/o removing the manifolds.
Why?
Reply With Quote
  #12  
Old 11-23-2009, 02:17 PM
Registered User
 
Join Date: Jul 2004
Posts: 7,381
Quote:
Originally Posted by charmalu View Post
If you have to ask what it is, you haven`t experienced the joy of pulling the manifolds off a 617 Turbo engine.
Parts identification assists everyone from the beginner to the expert- I asked so that others could understand clearly, not for myself. I have a underhood IC with a modified intake manifold.

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 09:22 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