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Article #374

MGB/Weber Technical Trivia Questions:

#374
From: DELBENE
Date: Fri, 03 Jan 1986 14:38
28 lines
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Well, I finally broke down and replaced my '79 MGB's dual SU's with
a single Weber DGV 32/36.  My apologies to the purists out there.
Upon installing and tuning I noticed a  couple of oddities I thought
someone in net land might have an answer to.
   
First, the mixure is correct (as indicated by my colourtune) when the
mixture screw is completely closed.  Seems to me that I must be bypassing
the idle circuit somehow.  Is this normal, an indication that my jets are too 
rich or what?

Second, it also occurs to me that the Weber may not provide the same vacuum to
my distributor as was provided by my SU's or the original Zenith-Stromberg
piece of garbage.  Attempts to find out either the required vacuum
or the proper advance curve for the distributor have so far led to 
nothing (One person did tell me that the curve goes up and to the right!).
Anyone know where this info might be found?  Does it make sense to install
some sort of valve like those found on  aquarium pumps to 'dial in'
the proper vacuum?

Finally, a question for those in the mid-NJ area:  Anyone know of 
a shop that can road tune a car, so that I can be sure that my 
performance is up to par at all speeds?


Help on any of the above is much appreciated!

Kurt DelBene
...!ihnp4!homxb!delbene
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From: delbene@mhuxo.UUCP (DELBENE)
Newsgroups: net.auto.tech
Subject: MGB/Weber Technical Trivia Questions:
Message-ID: <1185@mhuxo.UUCP>
Date: Fri, 3-Jan-86 09:38:38 EST
Article-I.D.: mhuxo.1185
Posted: Fri Jan  3 09:38:38 1986
Date-Received: Sat, 4-Jan-86 05:11:08 EST
Organization: AT&T Bell Laboratories, Murray Hill
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