Tom.....
Let's assume the following: your vacuum unit in the distributor is working,
your vacuum switch box is functioning correctly, and all the vacuum lines
are routed correctly. Under those conditions, you are correct - it would not
be necessary to disconnect the vacuum line to set the timing at idle in
neutral.
Lawrie
-----Original Message-----
From: Tom McLaughlin <tmcl98@yahoo.com>
To: Lawrie Alexander <Lawrie@britcars.com>; mgs@autox.team.net
<mgs@autox.team.net>
Date: Tuesday, April 20, 1999 10:09 AM
Subject: Re: Distributor Vaccuum
>Lawrie,
>
>I've been reading about setting timing as I'm going to try it for the
>first time this weekend. The manuals I have read say to disconnect the
>vacuum line and plug it to disable the vacuum advance when setting the
>timing. Is this necessary??? The below statement says to me that it
>is not.......unless you are setting the timing while driving down the
>road in 4th gear :-) hehe. Seriously, please advise.
>
>Tom
>77B
>
>--- Lawrie Alexander <Lawrie@britcars.com> wrote:
>> Dennis...........
>>
>> You're right about where the vacuum line goes, but
>> wrong about the intended
>> purpose of that "box".
>>
>> It is there to allow the distributor to receive
>> vacuum only when the car is
>> in 4th gear. There's a switch on the gearbox which
>> sends current to the
>> "box" when 4th is engaged. This opens a valve in the
>> "box" which connects
>> the vacuum line from the distributor to the other
>> line, which goes to a Tee
>> fitting in the short pipe between the gulp valve and
>> the manifold.
>
>
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