[Fot] Ignition issues

[Joe Boruch]

Sounds like with the shaft moving around side to side you need to take it all
apart to see what's going on - something is loose.

Some other things to watch for - I have had the centrifugal advance limit tab
break off and bounce around not doing good things, in addition to too much
advance.  Also, have had the advance weight pivot bushings wear through,
causing the weights to expand too far and rub on the inside of the distributor
housing.  Not only was it not running well, but all the metal dust inside did
not help much.  At that time I ditched the weights and installed electronic
advance.  Joe(B)

---------- Original Message ----------
From: "Greg & Alison Blake" <ablake2 at austin.rr.com>
To: <fot at autox.team.net>
Subject: [Fot] Ignition issues
Date: Mon, 14 Mar 2011 22:08:08 -0500

First off let me thank the folks that provided good feedback to my question
regarding the car not wanting to rev.  I am in the diagnostic phase and this
is what I have found so far:



As a recap, I am running the Mallory dual point.  Fresh points, rotor,
condenser (grounded), and cap.

The total dwell at 1100 rpm it is 40 and at 3500+ rpm it is 45. I assume
that dwell should not change over the rpm range and this condition is
indicative that something is wrong. I removed the cap and rotor and I can
move the top of the shaft far enough back and forth (side to side) to cause
the points to open and close. This distributor has 6 race weekends on it.

Could the shaft have already worn the bushings? I've read that Mallory will
not sell you replacement bushing or bearings as they want to rebuild the
unit.  Are there any alternative suggestions?

Do you guys leave the felt rubbing block in place on the points?  I have
them in place now, but I don't remember seeing a Lucas point set that uses
felt pads like that.  Maybe they are a good thing.

Thanks in advance,

Greg
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