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 > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-06-2011, 07:04 PM
Registered User
 
Join Date: Sep 2011
Posts: 1
Carb Info Needed

I need to know what brand/type carurators are on my 1972 250C m130 inline 6, chassis #114023. Non of the mechanics around here know or can find out. Both carbs need work--kits were recommended but need to know carb brand before ordering kits.
Problem: dies on acceleration.
Thank you.
Reply With Quote
  #2  
Old 09-06-2011, 07:34 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 34,495
Should be a name on them.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #3  
Old 09-07-2011, 05:10 AM
Hugin's Avatar
Registered User
 
Join Date: Apr 2005
Posts: 142
Help found here

Hi

I can recommend that you contact Micropolishing in this case.
Jeff Palay at Micropolishing is a fantastic guy, and he provide a great carburator service.

www.paltech1.com or micropolishing@paltech1.com

I bought a pair of Zenith carbs for my -71 230/8 and they looks like brand new ones.
__________________
1974 MB 230 4 cyl auto
1973 MB 280SE #12004
1970 MB 230/8 #53280
1970 MB 300SEL 6.3 #4509 sold
1968 MB 300SEL 6.3 #0335
1972 MB 280SE 4.5 75k miles sold
1971 MB 230/8 60k miles sold
1972 Volvo 142 60k miles sold
1969 Opel Rekord 1900 sold
Reply With Quote
  #4  
Old 09-07-2011, 12:18 PM
JMela's Avatar
Registered User
 
Join Date: Apr 2003
Location: Brooklyn, NY/ Minneapolis, MN
Posts: 987
Carburetors are most likely Zeniths. Models varied somewhat, I think the rebuild kits out there cover a few models and should be what you're looking for. Check the archives here for more than you'd ever want to read about them.
Reply With Quote
  #5  
Old 09-07-2011, 02:42 PM
Registered User
 
Join Date: Aug 2008
Posts: 71
Zenith carbs

I have a 1971 250c with dual zenith carb and i have the same problem, dies on acceleration. any idea what causes this?
Reply With Quote
  #6  
Old 09-08-2011, 06:49 AM
JimFreeh's Avatar
Benz addict
 
Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,339
Quote:
Originally Posted by JMela View Post
Carburetors are most likely Zeniths. Models varied somewhat, I think the rebuild kits out there cover a few models and should be what you're looking for. Check the archives here for more than you'd ever want to read about them.

Original carbs were Zeniths, and as suggested, do a search.

Here's what you'll find:

Carbs are very sensitive to adjustment.
Some can get it right, but others struggle.

Zenith carb bodies warp, causing leaks both air and fuel.

You can get a conversion kit to use Webers, but it requires some fiddling to set it up right.



The Webers, while expensive, made all the difference in the world for my 250C. I would not go back to the Zeniths for my car.

Jim
__________________
14 E250 BlueTEC black
94 E320 Cabriolet Emerald green
85 300TD 4 spd manual dark blue
Reply With Quote
  #7  
Old 09-08-2011, 02:25 PM
Fold on dotted line
 
Join Date: Aug 2007
Location: SE Mich
Posts: 3,101
Quote:
Originally Posted by AnneLouise View Post
I need to know what brand/type carurators are on my 1972 250C m130 inline 6, chassis #114023. Non of the mechanics around here know or can find out. Both carbs need work--kits were recommended but need to know carb brand before ordering kits.
Problem: dies on acceleration.
Thank you.

It is likely the carbs were Zenith 35?40 INAT or JNAT.

Jam Engineering mods Webers to replace them, but the Webers are expensive. BMW dealers used to have rebuild kits for the Zeniths.
Sometimes you can find them on Ebay.
Good luck!
__________________
Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6
Reply With Quote
  #8  
Old 09-10-2011, 04:01 PM
Registered User
 
Join Date: Apr 2006
Posts: 442
Quote:
Originally Posted by AnneLouise View Post
I need to know what brand/type carurators are on my 1972 250C m130 inline 6, chassis #114023. Non of the mechanics around here know or can find out. Both carbs need work--kits were recommended but need to know carb brand before ordering kits.
Problem: dies on acceleration.
Thank you.

Accelerator pumps are bad. Here's the rub: they don't come with the kits- they are a separate item. However, you'll need the kits because you'll need to tear into them to replace the accelerator pumps.

I'd really try to find a mechanic who knows what he/ she is doing on these carbs before you dive in.

And yes, they should be Zeniths. They're great carbs if you or your mechanic has the knowledge and patience to go through them, check everything, and correct all issues. The JAM engineering kit is a very nice second- best, and desireable because you can use your stock air cleaner.
__________________
1968 230S Automatic, Elfenbein
1975 O309D Executive Westfalia Camper Bus, Blau/ Weiss
1972 280SEL 4,5 Dunkelrot
1966 VW Type 34 "Grosser" Karmann-Ghia
1963 VW 1500 Variant Pearlweiss
1969 VW Variant Automatic, Perugruen
1971 VW Squareback Automatic, Clementine Orange
2001 E320 4Matic Wagon- Our belated welcome to the 21st century! Polar White
1973 280SEL 4,5 Sliding Roof "The Bomb", Dunkelblau.
Reply With Quote
  #9  
Old 09-13-2011, 12:03 AM
wbain5280's Avatar
Registered User
 
Join Date: May 2001
Location: Northern Va.
Posts: 3,386
If you do start the rebuild process, check each surface for 'flatness'. You make need to use thicker gaskets to compensate for any warp.

You could also go for throttle body fuel injection using Megasquirt. Someone modified a W110 4 cyl to use this setup.
__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.
Reply With Quote
  #10  
Old 09-14-2011, 03:03 AM
Registered User
 
Join Date: Jun 2011
Location: Tottridge,London
Posts: 193
The royce carb kits for the Zenith 35-40 INAT are inferior quality.The gaskets are of a thinner material compared to the original so may start issues of air or fuel leaks.
Hopefully someone can recommend another kit source as well .
ad
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 12:38 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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