<VV> Carb throttle shaft bushing

[Ruth Dorogi]

Before our vendors reproduced the throttle shafts I also used full length
brass sleeves for throttle shaft repair.  I used 11/32" round brass
telescoping tubing available at most hobby shops or
http://www.smallparts.com/.   I used my shopsmith as a horizontal drill with
a 21/64" drill bit to bore out the shaft holes and then a 11/32" reamer to
finish the holes.  The tubing was epoxied on to the shafts. It worked quite
well.  So some brass tubing may help with your problem.
        Of course Lon is right - it is much easier and cheaper to just
replace the shaft.  But that option didn't always exist .     Dennis Dorogi

----- Original Message ----- 
From: "corvairs" <lonwall at corvairunderground.com>
To: "Rburger" <rcbmc at bentonrea.com>
Cc: <virtualvairs at corvair.org>
Sent: Thursday, March 09, 2006 1:50 PM
Subject: Re: <VV> Carb throttle shaft bushing


> Richard - I know that many years ago  Bob Heinrichs of Richland WA used
> to sell  full length brass sleeves for carb repair - in fact, when we
> bought Bob out after his death, we got a bunch of those sleeves (which
> we still have). Bushing carb bodies is not the best solution. First,
> unless  the work is done by a machine shop with at least a proper
> alignment fixture for a drill press (milling machine preferred here) a
> do-it-yourselfer will almost always end up with a final "repair" worse
> than what he started with. Second, this involves a non-reversable major
> modification to the carb body.
>
> What most of us have been doing the past 10 years or so is to simply
> replace the carb shaft with a new repro shaft. It's interesting that 95%
> of the wear that occurs is on the chromed brass shaft and not the
> aluminum carb body. This odd point fits neatly with the recent posts
> about similar/dissimilar metals...... Lon
>
> www.corvairudnerground.com
> Are you on our E-List?
>
> Rburger wrote:
>
> >Gentlemen;
> >
> >When I took my carburetor apart to install the shaft seal kit I got from
CU, I made an interesting discovery. The throttle shaft had a brass bushing
installed along its entire length. I'd estimate the bushing is about .010
thick. Naturally, the carb body had been reamed oversize to accommodate the
bushing, which made installation of the seal kit a little more complicated
than I had anticipated. The difficulty was not insurmountable, though it may
have compromised the effectiveness of the kit to some extent. My question
is: have any of you seen such a bushing or repair kit that incorporated
such? If you have, do you know where to get a replacement? If you haven't,
can you advise about a source, perhaps not necessarily connected with the
automotive aftermarket? E.G., is there a supply somewhere of various lengths
of brass tubular bushing material in various combinations of ID and OD?
> >
> >One other question: I replaced the cup on the accelerator pump on the
same carb, but it did little to improve the operation of the pump. Does the
pump bore wear, rendering the pump more or less permanently inop? I
quadruple checked the appropriate passages in the carb and the float drop
and float level are to spec. Suggestions?
> >
> >You guys truly are the best; an island of sanity and sensibility in an
automotive hobby that increasingly often seems awash in incomprehensible
nonsense.
> >
> >Thanks,
> >
> >Richard Burger
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