I have cobbled together the bits and pieces that make up a 4a SU setup, (
late manifold, HS6s, linkages, bellcrank) and I'm at the point of needing
to rebush these HS6 carbs.
I've ordered a 'master rebuild kit' which includes stock diameter throttle
shafts and replacement bushings for the bodies.
I'm aware that Moss offers a reamer, but my understanding is that this
reams out the existing bushings to accomodate a larger diameter throttle
shaft. The rebuild kit is supplied with stock bushings and throttle, so
I'm assuming this is done with some regularity.
I would like to poll the list for the experience anyone has in rebushing
their carbs.
I recall that just a week or so ago someone mentioned a vendor for a
reamer similar to the Moss product.
Is this the preferred method? Using a reamer that has a pilot shaft which
uses the bushing on the opposite side of the body?
Is there such a reamer that retains the stock dimensions?
Can you do it with a drill press and a special size bit?
Your feedback appreciated as always, folks,
As an aside, the more I fiddle with SUs, the more impressed I am by them.
Did you ever rebuild an American 4 barrel carb? Or take apart a Weber? Or
worst of all, almost ANY carb that came off a smog legal car from the late
70s through early 90s with a bijillion vacum lines?
More little washers, gaskets, o-rings, plungers, springs, needles,
adjustment screws, vacum hoses, check valves, etc., etc., than you can
shake a stick at.
And then you look at an SU. There's like, THREE moving parts.
SUs almost seem too simple to work. What a marvelous design.
-jeffrey
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