175 cd stromberg replacement?? - PeachParts Mercedes-Benz Forum

ptmar · #1 07-19-2006, 05:33 PM

hello i have a mercedes benz 123 chasis/body with a 115 engine its a 200 gas instead of a US vesion of 230. i think it is the same engine that comes with the 115 chasis 200 gas version. i was looking for a replacement for my 175 cd stromberg carburetor . and i came out to this 2 versions:
see attached pictures.at the website
http://www.jameng.com/products/images/c-502.jpg
http://www.jameng.com/products/images/c-503.jpg

the difference between the two is one has a mounted level instead of tipped up angle. i dont have any means to check the car right now bec. the car is in the phillippines. can anyone who has the same engine check it out for me if a 200 gas 115 enigne stromberg cd 175 mount is straight or has an angle to it . thanks
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meltedpanda · #2 07-20-2006, 05:14 PM

well, kinda in between , see this , it may help , my 175

http://www.villagephotos.com/viewpubimage.asp?id_=15034064&selected=

autozen · #3 08-08-2006, 11:04 PM

Why do you need to replace the carb?

ptmar · #4 08-09-2006, 01:48 PM

well i feel it is very hard to tune a stromberg compare to a regular carburetor, it is more efficient, consume less gas, and easy parts. but i just purchased a used 175 stromberg at ebay hopefully it will solve my tuning problem and fuel burning of my stromberg. however it is still better for a original look .

autozen · #5 08-09-2006, 01:57 PM

As a factory trained professional MB mechanic with 30 years experience, I have to say that Stromberg was one of the best carbs ever made. With that piston being displaced with engine demand and moving that tapered needle with it, that is about as close to replicating fuel injection as any carb will ever get. The only drawback to the Stromberg is it is limited to smaller engines. What problems are you having? maybe I can help you out.

rs899 · #6 08-09-2006, 03:41 PM

I am not a factory trained mechanic ( not really trained in anything) but IMO the SU , which the Stromberg copied, seems a lot simpler. The best feature with the SUs is access to the float bowl from the top with 3 screws. It is my understanding that emissions controls could not be adapted to the SU very well.

autozen · #7 08-09-2006, 11:35 PM

Quote:

Originally Posted by rs899

I am not a factory trained mechanic ( not really trained in anything) but IMO the SU , which the Stromberg copied, seems a lot simpler. The best feature with the SUs is access to the float bowl from the top with 3 screws. It is my understanding that emissions controls could not be adapted to the SU very well.

I'm not familiar with SUs, so I can't comment. I'm merely pointing out that correcting the problems with the Stromberg that is mounted on the car is less hastle and less expense than refitting a new carb. As to accessing the floatbowl, how often do you need to access it?

autozen · #8 08-09-2006, 11:39 PM

Quote:

Originally Posted by ptmar

well i feel it is very hard to tune a stromberg compare to a regular carburetor, it is more efficient, consume less gas, and easy parts. but i just purchased a used 175 stromberg at ebay hopefully it will solve my tuning problem and fuel burning of my stromberg. however it is still better for a original look .

Where are you located? Do you have a professional mechanic who can go through the carb? I can give him instructions on what to look for.

dieseldiehard · #9 08-10-2006, 12:02 AM

Quote:

Originally Posted by autozen

Where are you located? Do you have a professional mechanic who can go through the carb? I can give him instructions on what to look for.

He indicated it is in the Phillippines.
I went down the road trying to fix an old Stromberg on my 220 and wound up installing a Weber down draft. Lots better IMHO.

rs899 · #10 08-10-2006, 08:06 AM

Quote:

As to accessing the floatbowl, how often do you need to access it?

In a British car, as often as you turn the key.

They are considerably simpler than Zenith Strombergs, having only 4 moving parts that I can think of ( float, throttle plate, choke and piston). IIRC, the Zenith Stromberg was developed because back in the early 60's Triumph needed such a carb and SU was owned by MG. So the Stromberg was copied from the SU using the same basic principle but being just different enough to escape British patent infringement issues.

I didn't mean to suggest an SU could be substituted in this case, it was just a comment for general discussion. Basically, I agree, the Stombergs are decent carbs and if the OP has one that can be refreshed, he should do so.

autozen · #11 08-10-2006, 11:13 AM

Dieseldiehard,
You got me. I pride myself on observation, but I guess I missed that one.

oilyrag · #12 08-15-2006, 12:40 AM

About 8 years ago I replaced the Stromberg 175 CDT in my 1973 220/8 with a Weber. Its very easy to install maybe 4 hours. However, I have to say that the improvement I was looking for never occurred. Now I know I need a valve job as the vacuum is definitely on the low side, but I believe with this old engine, the Stromberg was superior. In particular, the Weber needs to be adjusted rich to run smooth when cold (probably vacuum) which generates a lot of black smoke. I think the bottom line is that if you have a tight engine, the Weber will work just fine. But in my case, I'm going back to the Stromberg.

Haig · #13 06-27-2009, 05:00 AM

Hi,

My car idles badly, and sometimes runs rough, but will occasionally drive perfect but only at around 2000+rpm. Seems to start fine when cold, but have to give it full throttle to start it hot. Seems to overfuel maybe? Black smoke etc but more when cold. What do you think? Also, there appears to be a vacuum pipe which has been blanked off, I have attached a pic.

Thanks,
Haig

Takernz_30 · #14 06-27-2009, 06:29 AM

Quote:

Originally Posted by ptmar

hello i have a mercedes benz 123 chasis/body with a 115 engine its a 200 gas instead of a US vesion of 230. i think it is the same engine that comes with the 115 chasis 200 gas version. i was looking for a replacement for my 175 cd stromberg carburetor . and i came out to this 2 versions:
see attached pictures.at the website
http://www.jameng.com/products/images/c-502.jpg
http://www.jameng.com/products/images/c-503.jpg

the difference between the two is one has a mounted level instead of tipped up angle. i dont have any means to check the car right now bec. the car is in the phillippines. can anyone who has the same engine check it out for me if a 200 gas 115 enigne stromberg cd 175 mount is straight or has an angle to it . thanks
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where exactly in the Philippines? I have 1966 200 (palik-pik in tagalog) W110 w/ M115 engine from 1974 W115. I replaced older (with white cap) style Stromberg w/ one from '81 W123 200, b/c it consumes a lot of ATF and it smokes. After the swap, the engine runs smoother, more drivable, one-click on the mornings and hot starts! The Stromberg is the best b/c it is simplier to fix ,fewer moving parts,change fuel filter every 6 months if car used daily and lastly always check the ATF level in it, that's it.

Kung walang hatak ang makina mo o kayay palyado, 'yung diaphragm sa loob ay punit at maraming mabili dito sa atin mga P250 ang isa, nag reserba ako ng 2 pang diaphragm para walang hassle.

W123 ang kotse mo d ba? horizontal ang pagkakabit ng Stromberg, yung bar-8 angled yun mga 10-15 degrees.
roldan from Cebu City

gs sparhawk · #15 10-16-2009, 12:23 AM

Just highjacking the thread a bit---Seems that the issue first reported has been discussed but now (oct 09) I am needing a screw-in jet that goes into the bottom of the fuel bowl (from the outside)on my 175 CD on my '79 230.
The old girl has been sitting since it fell out on the highway from lack of friction on the "o"-ring.

(see image of bottom of fuel bowl)ATTACH]73378[/ATTACH]

Also: inside of fuel chamber where needle comes down into the enrichment jet.)