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 02-05-2022, 07:11 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 4,864
Please identify this wastegate on a 603 engine



The label on it, especially the comment about aircraft, seems odd. I assume it has a pressure line and a vacuum line on it. Which would be correct.

Does this look original/OE?

I need to find a good really small 0-15psi mechanical gauge to verify boost, or steal the tiny one from my 300cdÖ. Any good recent leads?

Thanks!

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #2  
Old 02-05-2022, 08:23 PM
Registered User
 
Join Date: Nov 2013
Location: San Mateo, CA
Posts: 1,107
Use the pressure gauge side of your MityVac vacuum pump (if you have one).
__________________
78 W116 300SD 'Desert Rose' new as of 01/26/2014
79 W116 300SD 'Stormcloud' RIP 04/11/2022
91 W126 300SE 'Kjetteri' new as of 02/19/2022
Reply With Quote
  #3  
Old 02-05-2022, 09:22 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 4,864
Quote:
Originally Posted by Alec300SD View Post
Use the pressure gauge side of your MityVac vacuum pump (if you have one).
Good call but I need some tubing and to dig up a three way fitting which I have someplaceÖ


All then same - probably not OE, correct??
__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #4  
Old 02-06-2022, 02:40 AM
Registered User
 
Join Date: Nov 2013
Location: San Mateo, CA
Posts: 1,107
Boost gauge was not a factory optiion AKAIK.
The MityVac setup works well to verify boost on a short term basis.

To monitor boost, I have a Autometer 5904 mechanical boost gauge plumbed in 'Desert Rose'.
The gauge range is 0 to 35 psi, black background with white numbers, illuminated, with a red (not orange) needle...an almost factory look.

For the boost feed to the gauge, an ALDA banjo bolt (with a barbed fitting) from an '85 OM617A was used in place of the stock '78 ALDA banjo bolt.
Thick walled silicone vacuum hose was used to connect the gauge to the barbed fitting on the ALDA banjo bolt.
__________________
78 W116 300SD 'Desert Rose' new as of 01/26/2014
79 W116 300SD 'Stormcloud' RIP 04/11/2022
91 W126 300SE 'Kjetteri' new as of 02/19/2022
Reply With Quote
  #5  
Old 02-06-2022, 09:54 AM
87tdwagen's Avatar
Registered Miscreant
 
Join Date: Aug 2005
Location: Sunny Ft. Lauderdale
Posts: 799
That actuator looks pretty much like mine, although I cant read your sticker nor mjne completely due to obstructions, they sure do look the same. The manufacturer is Garrett.

I installed a VDO boost gauge, same look as factory, plumbed to a unused port on intake manifold just above the IP and routed inside the vehicle. For me, it is a useful monitoring tool.
__________________
Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 160k mi (Benzrokee)
Reply With Quote
  #6  
Old 02-06-2022, 10:02 AM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 4,864
Quote:
Originally Posted by Alec300SD View Post
Boost gauge was not a factory optiion AKAIK.
The MityVac setup works well to verify boost on a short term basis.

To monitor boost, I have a Autometer 5904 mechanical boost gauge plumbed in 'Desert Rose'.
The gauge range is 0 to 35 psi, black background with white numbers, illuminated, with a red (not orange) needle...an almost factory look.

For the boost feed to the gauge, an ALDA banjo bolt (with a barbed fitting) from an '85 OM617A was used in place of the stock '78 ALDA banjo bolt.
Thick walled silicone vacuum hose was used to connect the gauge to the barbed fitting on the ALDA banjo bolt.

I meant the wastegate . I know a boost gauge wasnít. Iíve pumped them into cars before. On my 617 cars Iíve used them as tools to tweak the mechanical boost controllers Iíve installed (they were the rage on here 20 years ago!).

I use it as a tool and keep it tucked away. Donít want a big 2Ē gauge permanently mounted. I like the tiny 1Ē 0-15psi gauge I have in my 300cd, but I probably bought it 10 years ago and donít really remember from where!
__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #7  
Old 02-06-2022, 12:58 PM
compu_85's Avatar
Cruisin on Electric Ave.
 
Join Date: May 2008
Location: Springfield VA
Posts: 5,211
Does the line coming off of it hook into a vacuum solenoid, or does it loop around to the high pressure side of the turbo somehow?

The original .971 turbo has a vacuum wastegate. It's normally open, the computer sends vacuum to it to close the wastegate and make boost.

Some VWs with wastegates do something a bit different: The turbo has a standard pressure wastegate, which is set to open at like 10 psi. The computer uses a "vacuum" solenoid to regulate boost pressure to the turbo, keeping the wastegate closed longer so it makes around 14 psi.
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000).

Tesla Model 3. 136,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.
Reply With Quote
  #8  
Old 02-06-2022, 03:50 PM
Banned
 
Join Date: Sep 2021
Posts: 37
Nobody cares about the coolant leak?
Reply With Quote
  #9  
Old 02-07-2022, 12:12 AM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 4,864
Quote:
Originally Posted by compu_85 View Post
Does the line coming off of it hook into a vacuum solenoid, or does it loop around to the high pressure side of the turbo somehow?

The original .971 turbo has a vacuum wastegate. It's normally open, the computer sends vacuum to it to close the wastegate and make boost.

Some VWs with wastegates do something a bit different: The turbo has a standard pressure wastegate, which is set to open at like 10 psi. The computer uses a "vacuum" solenoid to regulate boost pressure to the turbo, keeping the wastegate closed longer so it makes around 14 psi.
I need to dig into that more. I think it is hooked up the normal way.

I tried to do a bit of an italian tune up today, I think I could feel boost coming on, especially at more than half throttle and higher speeds. Its a 4400lb car, so its not going to move the same way as a turbo in a lighter car will. The car moves effortlessly and sufficiently fast... But I still need to get a boost gauge on it...
__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #10  
Old 02-07-2022, 12:13 AM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 4,864
Quote:
Originally Posted by CanadasHistory View Post
Nobody cares about the coolant leak?
It's a drip coming from a non-OE hose... Not a big deal. Car doesnt lose coolant or leave any spots on the ground.
__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #11  
Old 02-07-2022, 08:15 PM
Banned
 
Join Date: Sep 2021
Posts: 37
Quote:
Originally Posted by JHZR2 View Post
It's a drip coming from a non-OE hose... Not a big deal. Car doesnt lose coolant or leave any spots on the ground.

Leak is a leak... Its a failure point.

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 09:30 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page