[BMWCSRegistry] Re: zenith secret

[David Dart]

I have some brand new carb bodies in a box somewhere (I'm sure!) that I
could be persuaded to part with along with some kits or gaskets of some
sort.
 
Been a while since I've seen them though so no promises.
 
David.

  _____  

From: Dale B. Phelps [mailto:losgatos_dale at yahoo.com] 
Sent: Friday, May 25, 2007 2:20 AM
To: bmwcsregistry at idb.ded.forest.net
Subject: [BMWCSRegistry] Re: zenith secret


After decades of "the possibility" that our car may have been overheated, it
is pretty likely that overheating has occured, perhaps more than once or
twice. Often, even the original heads simply get shaved (!) to take any
heat-induced warpage out of them...but can YOU recall how often you have
heard someone emphasize warping in the zenish car b assemblies?
 
I'd wager not often. The next time you have time on your hands and decide to
maybe re-build your zenith carbs, try lapping the bodies mating surfaces on
a piece of flat plate glass with rouge ... First, I'd wager you will be
amazed at how the first few passes betray some significant out-of-flat
condition. Next, continue to patiently lap the surfaces ONLY until you get a
consistent polish/finish/shine on the entire flat face surface. Do NOT
over-do it. More is NOT better, you only want "just enough." Then, if you
have done everything correctly on the rebuild/re-assembly of your carbs
(itself a challenge for far more of us than would care to admit) you will
find yourself with a pair of carbs, when synched properly, that are very
responsive and perform very well across the whole powerband range AND last a
lot longer than the cha-ching "non-FIA-approved" Webers and even hold a
tune!
 
So there! I finally said it. If you decide to repeat this in print, please
make a (fair) attribution, I'm not making this shit up..  


Dale B. Phelps 
303.651.7307 




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