RE: Timing

[Tom Duross <tduross1@xxxxxxxxxxx>]

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Ok Joe, now a further question.

What sets timing to be btc and atc?  Is this the approach of the cam?
Is highest setting the furthest way from tdc, like in positive and negative?
So I'm setting the timing against mechanical advance only, assuming I do.
Then vacuum advance gets connected and holds some relative constant to rpm?
RPM drops slightly when the vacuum is connected, is this correct?
Is idle rpm then set with the vacuum connected like with dwell and then the
timing is set?

Thanks very much.

Tom

-----Original Message-----
From: Joeydahook9@xxxxxxx [mailto:Joeydahook9@xxxxxxx]
Sent: Thursday, September 15, 2005 7:13 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Re: Timing



Tom - the vacuum pulls timing on the distributor as it is running.   when
disconnecting the vacuum, you are setting the mechanical advance.  The
vacuum
advance is added to the mechanical advance when the vacuum line is
reattached
and the engine is running at fill vacuum.  The engine idle needs  to be
settled
(hot idle) so it is always the same when adjusted.

  Timing recommendations are just that.  Wear and tear as well as  fuel
grade, and carbon build up can affect recommendations a few degrees.   Set
it where
it runs best as long as it doesn't ping on you.  Usually the  highest
setting
is the most efficient, but this can be argued.   Joe

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