Weber 36DO2 Auxiliary Venturis Needed - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 11 (permalink) Old 09-21-2016, 03:46 PM Thread Starter
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Unhappy Weber 36DO2 Auxiliary Venturis Needed

Now I need to find 3 new auxiliary venturis for the Weber 36DO2 carburetors on my 6C 2500SS. These parts are fragile and tend to warp. My carburetor restorer is afraid mine will break and hurt the engine. Even though I have a number of spare carburetors none of the auxiliary venturis is good enough to use.

Does anyone know if this part has been reproduced? What is the source? I have contacted AFRA and also Italparts.

If nobody reproduces these parts I may have to go into this business.
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post #2 of 11 (permalink) Old 11-02-2016, 01:09 PM
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Hi Fred,
Untill now I haven't had any luck to find parts for the 36 D02.
can you send me a picture of the venturi in question, it would be easier to have an idea of what you are looking for.
What is the outer diameter and the height of the venturi by the way? ( in milimeters if possible)

Can't you use or adapt a venturi from another 36 diameter weber? f. i. 36 dcd series? On first sight, this seems mutch the same.

I saw a set of 36 DO2 carbs by Italparts, maybe they can help you with some parts.

Do you have any drawings or documentation of the 36 DO series, In the copy of the parts manual of the 6C that I have, I found the old weber references but no exploded view.



rgds,
Thierry
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post #3 of 11 (permalink) Old 11-02-2016, 07:36 PM
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Many people working with Webers will make their own venturis as they improve upon the shape and make better power that way ... should be doable with 36DO2 as well ... you may want to contact Gordon Raymond here on the AlfaBB for advice.
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post #4 of 11 (permalink) Old 11-29-2016, 11:25 AM Thread Starter
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I managed to find enough decent parts in my collection of spare vintage Webers to complete the restoration. I appreciate the help offered. The job was done by Pierce Manifolds in Gilroy California. They really know these old Webers.
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post #5 of 11 (permalink) Old 01-06-2019, 09:16 PM
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I'm looking for rebuild of my 36DO2's also. Any ideas from anyone about sourcing parts?
thanks
joe
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post #6 of 11 (permalink) Old 01-08-2019, 11:31 AM Thread Starter
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Over several decades I have purchased a number of used Webers of this type. I sacrificed the completeness of all these carbs and we found 3 of the needed parts good enough to use. Auxiliary venturis are very hard to build compared to a main venturi due to the needed cross bar. If anyone reproduces these parts for the Weber 36DO2 or 36DO4 there should be a lot of potential buyers. The part is a bad design and almost guaranteed to fail.
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post #7 of 11 (permalink) Old 01-08-2019, 01:15 PM
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Is this a project for someone with a 3D printer?

Or is 3D only for plastic?

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post #8 of 11 (permalink) Old 01-08-2019, 02:19 PM Thread Starter
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Some vendors claim they can make metal parts using 3D printing. I do not know the properties of the material or the cost. You could also look into the possibility of investment casting (lost wax). Either method would require some machining after casting because the parts need very close tolerance on the outside diameter and also drilling of tiny precision holes. Luckily I had enough usable parts to avoid these reproduction projects.
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post #9 of 11 (permalink) Old 02-18-2019, 06:29 PM
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Fred
do you have nay left over parts for the 36D02 's ? They might help me. Pierce Manifold has told me that they no longer have parts for this model.

How does one get in touch with Gordon Raymond?
thanks
Joe
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post #10 of 11 (permalink) Old 02-18-2019, 08:47 PM Thread Starter
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Joe,
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post #11 of 11 (permalink) Old 02-18-2019, 08:50 PM Thread Starter
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Joe,
I have a number of 36DO carbs in a partly disassembled condition. What parts do you need?
Fred
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