To: KMWHEELER - re sources for SU HS4s and manifolds:
About a year ago I bought a set of new HS4s for my 1980 MGB from
Roy Matthews
Carburetor Systems
815 Hurlbut Avenue
Sebastopol, CA 95472
707-823-1957
The total cost, including linkages, a pair of flat air cleaners and
shipping was $274.55. Adding up what Apple Hydraulics charges just
to rebush a set of old ones, I figured this was less expensive.
I got used a used intake manifold from a source which advertised in Hemmings
(Rhino Imported Autoparts in Minnesota). Pre '74 exhaust manifolds are a bit
harder
to find, so I was told, but I managed to find one at a shop in Boca Raton,
Florida
while down there on business.
If you cannot find a used exhaust manifold, you will have to go with a
header.
If you do find a used exhaust manifold, check that none of the studs which
mount the head pipe are broken. If the studs are in place I recommend
removing
them, or having them removed by a machine shop. It's a real pain if one
breaks
off while you are working on the car. You will have better luck with all new
head pipe studs.
On the gearbox oil thread:
There was some discussion on the digest several months ago about the
effect of hypoid gear oil on brass synchro rings which are common in
the older British cars (such as my Austin Healey 3000). The gist of it
was that the high sulfur content in hypoid gear oil corroded the brass
synchro rings and made them wear out faster.
As far as using non-detergent oil is concerned, I read an article in one of
the Healey Club newsletters, written by a guy who repairs gearboxes,
recommending non-detergent oil. He said that in an older gearbox, there
will be alot of crud in the bottom. A detergent oil will pick up the crud
and circulate it throught the gearbox, where it will get into the bearings
and cause increased wear.
Peter Schauss
pschauss@aol.com
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