[alfa] Solex C40 DDH "8" carburetor

[TurboFiat <turbofiat@xxxxxxxxxx>]

First of all I apologize posting a question concerning a carburetor from an 
Alfa Romeo since I don't actually own an Alfa. However if it makes anyone 
feel any better this carburetor is going on a Fiat. I could really use some 
help on this particular carburetor and have exhausted search engine attempts.

I found this carburetor on Ebay and decided to buy it as a cheaper 
alternative to a Weber DCOE.
The guy said it came from an Alfa Romeo.

I have a few questions.

I've just about quit buying used carburetors because it seems like 
something is always missing, broken or jerry rigged and this carburetor is 
no exception.

First thing I need to know is where can I get parts for this carburetor? 
What other makes/models used this particular carburetor? I have searched 
Yahoo and all I can find are some pages in the Czech republic on the Alfa 
Romeo models it went on that are no help. There has to be a supplier of 
rebuild kits somewhere. Preferable in the United States.

The carburetor is missing a few bits. First of all it's missing the choke 
return spring. I should be able to find that one at NAPA if push comes to 
shove but there are two things I am not quite sure about. For one there is 
what looks like a bent jet where one of the screws goes that secures the 
float hat to the body. It's corresponding hole has a mismatched tapered 
screw. When I pulled the float hat off, the float hat holes are threaded 
but the body isn't which leads me to believe something other than plugs are 
supposed to go in these holes.

I can email someone photos of the carburetor.

This carburetor is going to be used for a turbo application. It's either 
going to be used on the suction side of a turbo on a 2 liter twin cam or 
will be used on my current project a 1500cc Fiat SOHC engine as a blow 
through application.

Would this carburetor be too large for a 1500cc engine? If used as a single?

This carburetor has several things going for it. For one it has a black 
plastic float instead of brass so it doesn't have to be filled with foam so 
it won't collapse when the carb is pressurized.

Second it doesn't have any vacuum ports to trick out.

Third and this may not be what it was intended for but the base of the 
carburetor has holes factory drilled into the throttle shafts. What this 
means is I can fabricate a plate to go under the base of the carburetor and 
feed tubes from the top of the carburetor. This will seal the throttle 
shafts from leaking. Otherwise I would have to remove the throttle shaft to 
drill holes and I have never had any luck removing throttle plate screws. I 
end up rounding them off.

And last being more knowledgeable on Bosch L-jet I'm a bit confused about 
some other bits on the carburetor. If the hat is removed, the idle and main 
jets are exposed but externally, there are two other things that looks like 
jets. They stick into the venturis. I'm not sure what those are. One of 
them is slightly bend and is a bit hard to remove.

I'm trying to figure out how to attach a throttle cable to this carburetor. 
On the end of the shaft is what looks like an idle speed screw but it 
appears to have no function. Other than maybe used to synchronize both 
carburators.

There is not enough room to slip a throttle connector from a Weber 
carburetor onto the shaft without removing the other piece which acts as a 
throttle stop. Anyone have any ideas on this one?

And of course I will probably have to rejet the carburator. So I will need 
new main jets.

And one last question. Would an air cleaner from a DCOE, IDF or Dellorto 
fit this Solex? I can buy a turbo hat from Turbo City for an IDF that will 
save me some time.

If anyone has any breakdowns of this carburetor and it's components can you 
email it to me?

And any information on this carburetor appreciated. Thanks.









James Seabolt
Tennessee, United States
Homepage --->>> http://users.chartertn.net/jseabolt/

2003 Subaru Baja
1987 Yugo GV
1980 FIAT 2000 "TURBO" Spider
1968 Ford Fairlane 500 (Not a Ford Galaxie!!)
--
to be removed from alfa, see /bin/digest-subs.cgi
or email "unsubscribe alfa" to majordomo@domain.elided