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Join Date: Nov 1999
Location: Montegut, Louisiana, USA
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weber designations

Hi,
Was wondering if anyone knows what the letter designation on weber carbs stand for if anything.
For instance "IDA", or "DVG", etc.
I have the haynes weber book and can look at the various carbs, but was wondering what the letter stand for?
Thanks.
Houston in Lousisiana
Old 01-12-2000, 05:19 PM
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To quote from HPBooks "Weber Carburetors" by Pat Braden:

The prefix always indicates the size of the throttle plate i.e. 40 DCOE is a 40mm throttle plate. The letters immediately following the prefix refer, in Italian, to the general type of carb. Only a few terms are consistent: "DC" means doppio corpo, or double-throat. "V" means verticale (vertical) and "O" means orizzontale (horizontal). The "I" in IDA seems to mean invertito, or inverted. Yet, there are no updraft, or inverted, Webers; the IDA is a downdraft.

Other even less-consistent single-letter designations are:

E: Die cast carb
F: Ford (of Europe) or Ferrari (?) application
V: Carb with power valve
A: Water-operated automatic choke
G: Progressive rate

Weber carb nomenclature is chaotic. The IDA may be 2-3 throats, and there is no choke at all. The "E" in DCOE indicates either a trapezoid bolt pattern (in some applications), or a rectangular pattern. The DCN fitted to the Lamborghini was a DCNL, but if fitted to a Ferrari, became a DCNF!

Any questions?
Old 01-14-2000, 09:58 AM
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so what will the description of my 40idx or idf?

[This message has been edited by stelan (edited 01-15-2000).]
Old 01-15-2000, 12:18 PM
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A 40 IDF is just what it's called, a 40 IDF.

Sometimes, a cigar is just that; a cigar.
Old 01-15-2000, 10:12 PM
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