Warped Carb Body

[18Fiatsandcounting]

Not to get too far off topic but, the carb on my car is stamped 32ADFA2 100. I have another carb in my garage that is stamped 32ADFA11 100 that I have kept in case I needed parts. To further confuse the issue,
I have another Weber stamped 32ADFA13 102.
Does anyone have a link to a website or pdf that explains the difference in these?

I don't have a good explanation for you, but I'll do some research since I'm curious too. I do know that not all 32ADFA carbs are equal (same as with all Weber carbs), and the numbers after the main identification mean slightly different versions, often for emission control reasons. So, one version of a 32ADFA might have different float bowl vent fittings, vacuum ports, or slightly different calibrations for jetting and such.

So, if you get another 32ADFA and it's not exactly the same version as your current one, there may be some minor things you'll to do to get it all set up correctly. Nothing major.

-Bryan

[CharlieB]

The only difference I have found aside from 2 different size shut off solenoids is a difference in emulsion tube sizes. Jet sizes are the same. Weird.

[dinghyguy]

I have 32 adfa's on both my fiats and i spent a bunch of time trying to figure out which is which and what it what. I ended up preparing a 9 page summary of what i found if you are interested.
I just picked up another one for rebuilding as well.
I suspect the little ball check is seized, but i know how to solve that.

cheers
Dinghyguy

[CharlieB]

Dinghyguy you sent me your 28 page Weber booklet some time ago, it is invaluable. So if you don't mind sharing your summary, by all means please send it. I'll pm you my email address.
Thanks,
Charlie

[18Fiatsandcounting]

The only difference I have found aside from 2 different size shut off solenoids is a difference in emulsion tube sizes. Jet sizes are the same. Weird.

Also worth noting that Weber carbs were used by many manufacturers, and this might be true of the 32ADFA. The different versions might be specific setups for other cars, although the basic carb body is the same.

Kind of like Fiat cylinder heads that can have the same casting number but be somewhat different in terms of specifics because they were for different engines (size, Europe vs. USA, emission requirements, performance goals, etc.)

-Bryan

[dinghyguy]

the 1977 Weber catalog has the following

32 adfa 2/100 - 75-76 124 exc. calif
32 adfa - 75-76 124 calif
32 adfa 1/100 - 75-76 131 exc calif
32 adfa 3/100 - 75-76 131 (AT) exc calif
32 afda 4/100 - 75-76 131 calif
32 adfa 6/100 - 75-76 131 (AT) calif

Cheers
dinghyguy

[DieselSpider]

Thanks guys,
I doubt I can sand/grind it down enough to take the bow out but I have nothing to lose at this point. I did crank it down on the bench vise overnight and that did take some of the bow out. I was going to heat it up a bit with a torch but I'm not sure if that would help or cause new problems.

Charlie

Be extremely cautious about heating it since base metal and aluminum don't change color until they are molten and then its usually a total loss.

[CharlieB]

Thanks Diesel, I decided not to heat it. I have made progress using a flat surface and emery cloth. It's taken some time but it's getting pretty close.

[DieselSpider]

Thanks Diesel, I decided not to heat it. I have made progress using a flat surface and emery cloth. It's taken some time but it's getting pretty close.

Time and patience is what it often takes. I tend to Gorilla things too so your not alone. I use a torque wrench whenever possible to minimize that.

[CharlieB]

Just to wrap this up, I was able to get the carb body flat enough. It took a few sheets of emery cloth and even more patience but it worked.
Thanks for the help guys.
Charlie

[dinghyguy]

32 adfa11 102 main jets 125, 140 air jets 170, 170, emulsion tubes f84, f7 1977 124 sport 1800
32 adfa 13 102 main jets 125, 140 air jets 170, 170, emulsion tubes f74, f7 1977 131 1800
32 adfa 3 101 main jets 125, 140 air jets 185, 170, emulsion tubes f74, f74 1977 131 1800
32 adfa 1 101 main jets 120, 125 air jets 180, 160, emulsion tubes f73, f73 1976 131 1600
32 adfa 12 100 main jets 125, 140 air jets 185, 170, emulsion tubes f73, f7 1976 124 sport 1800

Now are you confused? I have data sheets on about 14 versions, but my italian os not that good. I am working to identify the major variances. and in particular to see if i can figure out what jetting will work best with a 2L engine. all these seem like they might be a bit small.

cheers
Dinghyguy

[CharlieB]

Haha, yes I am sufficiently confused. My Italian is not so good either but my wife's sister has lived in Italy for 25 years so she has helped me translate a few Fiat data sheets.
Very helpful info, thanks
Charlie

[Nut124]

Just to wrap this up, I was able to get the carb body flat enough. It took a few sheets of emery cloth and even more patience but it worked.
Thanks for the help guys.
Charlie

Great! It is amazing what one can do when labor is free.