Downdraft question

Maybe but why. I would not help. You would be better off to plug the bottom and weld a adaptor on top. Better yet get a down draft manifold.
 
So, is it the downward flow of fuel or the type of carb that makes it better?
I do not have the skill to weld cast iron.
 
It is the size of the carb that makes them better, bigger is better. Bigger equals more air flow, so more air/fuel into the engine gives more power.
 
Not wanting to run a stock carb upside down. Probably gonna run a carb from a flat 6. So, it won't like the curve of a U-shaped manifold?
 
COOTER said:
Not wanting to run a stock carb upside down. Probably gonna run a carb from a flat 6. So, it won't like the curve of a U-shaped manifold?
Click to expand...

No it won't like it. But is about a lot of things. The bore in the manifold is to small. To make it really work takes a lot of things to work to gather.
 
its all about increased air flow. its just that cars went to v engine shape so later larger carbs are downdraft. increased air flow means increased max rpm
 
I got this at a swap meet last year, its a Holley #1907 50s Ford 6cyl, the only reason I did was because it was bolted to a very nice late 31 exhaust manifold the seller would not separate.
 

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Vince,

So that manifold must be for use with the Detroit Lubricator carb or is this for some Russian GAZ carb?

Looks like maybe some Russian writing on the manifold.

Looks like a preheat pad on manifold so maybe for use in Siberia! Although the Model A has pre-heater pad also.

I tried an after market downdraft manifold without pre-heater pad and found it to be very cold blooded even in mild cold spells.
 
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Vince,

Thanks for info.

I worked with the Solex carbs on VW Bugs starting with 1950's models and up to 1969 when the Type IIIs went to Fuel Injection.

The 68 Type IIIs were the last ones with twin Solex.

I had a 69 and a 73 Type III.

The Bugs, Buses and Karmen Ghias continued with single Solex carbs until early to mid 70's as I remember.

My '76 Dasher was CIS Continuous Injection System.

There were a couple guys in Denver that plugged up and inverted a Model A manifold like you mentioned above. This setup used a Ford Econoline Van carb with that same manifold configuration.
 
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I run a Solex 32 PBIC on my G28 engine. These carbs were used by Citroen Traction Avant (11/15 CV) and early ID 19. Feels a little breathless in higher revs... but runs smoothly and is very responsive in lower revs

Cheers
Peter from Germany
 
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