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From: djl@fisher.UUCP (Dan Levin  N6BZA )
Newsgroups: net.auto
Subject: Help needed with melting exaust pipe...
Message-ID: <595@fisher.UUCP>
Date: Sat, 27-Apr-85 16:51:29 EDT
Article-I.D.: fisher.595
Posted: Sat Apr 27 16:51:29 1985
Date-Received: Sun, 28-Apr-85 08:16:20 EDT
Distribution: net
Organization: Princeton University Department of Statistics
Lines: 48

Background...
    1966 Ford Mustang Coupe - 200 cid Six - Ford 2.77 3 Speed Manual

    For those of you unfamiliar with the Ford straight six, the
    exaust manifold bolts (with gasket) to the block, and about four
    inches below that joint, the manifold to muffler pipe bolts onto
    the manifold.  The pipe looks like this...

                      |        |   
                      |        |   
                      /        \   
               -- 1 --|        |-- 1 --
                  --  |        |  --
                      |        |
                      |        |   <==== 2

	Well, sort of :-).  Any way, the points marked by 1 are where a
	semi-metallic gasket (donut shaped) sits, and this mounts to the
	beveled bottom surface of the manifold.

Problem...
	I have had two problems, which I believe are related.  First,
	the donut gasket burns out.  Second, the pipe (I am on my third now)
	burns through at point 2, and breaks off from the manifold.

	I have had two different groups of people tell me two things.
	The muffler types say that it must be the timing, that if it was
	the muffler being clogged up, the car would not run.  The mechanics
	(and my intuition) say that if the timing was off by that much,
	the car would not run, and the poor exaust valves would be so much
	carbon by now.

	The only problem that anyone (including myself can find) with the
	car is that the vacuum advance is broken.  The muffler seems fine,
	and the timing/engine seems otherwise ok.

Plea...
	So, does anyone have any ideas?  I am at wits end.  It would seem
	that the problem cannot exist, for if it did, the car would not 
	run.  Yet, every 800-1k miles, the pipe breaks off again!  I am
	willing to listen to any suggestions, however far fetched.

	Thanks in advance, as they say,
-- 
			***dan

{allegra,astrovax,princeton,twg}!fisher!djl
The misplaced (You call *that* a ski slope??) Californian