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  #1  
Old 10-26-2007, 03:56 PM
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weber carb conversion kit

Just bought a weber 38 dgas conversion kit from weber redline (kit 248) to replace the problematic solex on my 73 280C. The new carb fits in nicely but the linkage provided with the kit does not seem to make any sense. I searched the forum and found that others have had this problem but not clear how they fixed it. The redline help line has not been very helpful so far. Any help would be very appreciated!

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  #2  
Old 10-26-2007, 07:39 PM
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I looked at the website photo of your kit. There's not many parts associated with the linkage. Can you provide more detail of the problem, and perhaps post a scan of the directions?
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  #3  
Old 10-26-2007, 10:45 PM
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True, not many linkage parts. But the parts provided with the kit are not the correct lenght to fit. It's not clear in the instructions whether you should keep some parts of the original linkage or not. But I'm expecting some photos from someone who successfully installed the kit. I'll keep you posted and try to scan the instructions.
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Old 10-27-2007, 08:25 AM
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To be more specific, with the original solex the linkage motion is north-south, with the weber the motion is east-west. There is an elbow provided with the conversion kit but no place to mount it, and the linkage that comes with the kit seems too short. I guess a picture would be better!
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  #5  
Old 10-27-2007, 11:06 AM
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I see in the website photo a place to mount the bellcrank on the extension out from the adaptor block using the bolt with the unthreaded body (stripper bolt).
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  #6  
Old 10-27-2007, 12:14 PM
Brian Ostosh
 
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Just rebuild (correctly) the Solex, save your money and headaches.
I've done those carbs, they are a copy of the Rochester Quadrajet..
Very good carb when done correctly.
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  #7  
Old 10-27-2007, 01:09 PM
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Quote:
Originally Posted by Chas H View Post
I see in the website photo a place to mount the bellcrank on the extension out from the adaptor block using the bolt with the unthreaded body (stripper bolt).

You're right. But logically the extension on the adaptor block should be on the rear left corner and then it would seem simple. The way it is now, when the adaptor plate is mounted the extension is in the left front portion of the carb. If I could flip the adaptor upside down it would seem to be in the right place. It is as though the adaptor block is not designed properly. But I am expecting some photos from someone who successfully did the conversion, and hopefully that will help!
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  #8  
Old 10-27-2007, 01:40 PM
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The other choice would be to mount the adaptor with the extension to the right rear.
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  #9  
Old 10-30-2007, 03:32 PM
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Eureka!!!

Phoned redline weber again yesterday and they faxed me a diagram for the mercedes 280 solex application. It turns out that the generic instruction booklet provided with the kit says that the front of the weber carb must face the front of the car, but the linkage is impossible to install that way. On the correct diagram, it shows that the new carb must be rotated 180 degrees and then it is very easy to figure out!

I just wish they had included the correct instructions with the kit, it would have saved a lot of time and frustration! If you order the redline weber conversion kit, make sure they send you the correct mercedes linkage diagram!
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  #10  
Old 11-03-2007, 01:16 AM
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If you checked an earlier thread of mine, you would see I had a similar problem. I had the 32/36 Weber kit and the directions I had were obtuse. All the instructions were there but in a weird order that was confusing. Also, mine had you retain the old linkage. You'd think for a $900 kit, they could put in $5 worth of new linkage parts.
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  #11  
Old 11-03-2007, 11:47 AM
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Quote:
Originally Posted by dmtinker View Post
If you checked an earlier thread of mine, you would see I had a similar problem. I had the 32/36 Weber kit and the directions I had were obtuse. All the instructions were there but in a weird order that was confusing. Also, mine had you retain the old linkage. You'd think for a $900 kit, they could put in $5 worth of new linkage parts.

Yes, I urge anyone buying the redline weber kits to make sure they have the specific instructions for their kit, otherwise they will waste a lot of time trying to figure it out!

Anyway everything is now installed, the car now starts very well cold or warm, doesn't stall and idles smoothly, but still has an initial hesitation on take off (? accelerator pump problem). A little more fine tuning and hopefully I'll be back on the road!
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  #12  
Old 07-24-2009, 02:43 AM
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Muscle Car just had an episode on rebuilding a Quadrajet.

http://www.powerblocktv.com/site3/index.php/watch-full-episodes/ep?ep_show=MC
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  #13  
Old 07-24-2009, 09:56 AM
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Please post on how the conversion turns out, driving, idling, etc.
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  #14  
Old 07-24-2009, 12:22 PM
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I've had more than one person tell me the car is a slug with the little Webber compared to the Solex(when it's working halfway right anyway). That was what stopped me, the US spec cars are slow enough as it is.

And I'm sure the 4A1 is a fine carb, when it's not warped all to hell, like every one I've seen so far is. If I had the time I still think a quadrajet could be tuned
to work well on the M110.
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  #15  
Old 07-24-2009, 12:31 PM
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Quote:
Originally Posted by ctaylor738 View Post
Please post on how the conversion turns out, driving, idling, etc.

I sold the car last spring and bought a diesel! I had kept the solex 4a1 and sold it with the car.

But the weber conversion was never right. Started and idled OK, but it was difficult to get rid of the flat spot when accelerating. It improved if the timing was advanced, but was never gone. All in all I dont recommend the weber redline conversion kit for the M110.

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