Autolite 2100 carbs

["Allan W." <allanw@xxxxxxxxxxxxxxxxxxxx>]

>Date: Mon, 16 Jun 2003 19:48:42 -0400
>From: "Bryan" <bryan@domain.elided>
>Subject: Carbuerators
<snip>
>Most of the info I've seen mentions the jet sizes indicator
>on the side of the carb.  Mine says 1.23.  Most of the info I've seen
>has that number being lower, like 1.06 or something.

Bryan,
  I've been on vaction and been trying to catch up on digest reading.
I've read several after your question but didn't notice any replies.
The 1.23 you refer to is the venturi size and is related to the CFM
rating.  1.23 is a 356 CFM unit.  You are correct that these are
excellent carbs, actually better than the Holley units.  They have
annular discharge boosters (was a patent held by Ford) and also
the construction is such that they can run without the top cover.

A basic rebuild is very easy and the kits are cheap.  If you want a
TOTAL rebuild including throttle shaft rebushing, check out
http://www.ponycarburetors.com/main.asp
Great folks to deal with and I have one of their full show
quality restored 1100 carbs on a 6 cylinder Mustang.  You
could not tell it from a brand new unit, with all parts replated.
They really know Autolite carbs.  And it runs excellent.

If you have a metal tag under one of the screws holding the top
cover on, I can decode the letters/numbers stamped there too.
There should also be a number stamped on the "toe" of the
base plate, near the left front mounting bolt.  I have a book
that Pony Carburetors publishes that decodes all these numbers,
which include the year/month/week of manufacture and the
original car line it was installed on.  Probably the size of the
engine it came on too.

Hope this helps,
Allan W.