Re: degrees of movement:
The 15 degrees of movement is distributor degrees (counter-clockwise, left).
And to confirm, from it's resting place, the rotor can also be rotated 10
degrees in the opposite direction (clockwise - to the right) which I referred
to as "retard".
Mechanic buddy had the exact same reaction as you, that it does not make sense
to mfr it with opposite movement.
Interesting point on the coil.
On 2012-03-27, at 12:30 PM, "Jerry Mo Christopherson"
<JCMC2006@suddenlink.net> wrote:
> Gary
> Seeing the pictures; I would make sure that your primary wire (copper
band
> going to the points), even though it has a sheathing on it is not touching
> the side of the dist. make sure there is a gap. As for the felt wicks, I
> haven't see points that had the wick right at the rubbing block, but maybe
> Mallory had a better idea. This is just an ongoing attempt to find the
> problem.
>
> A friend of mine with a 68 Mustang (with Mallory dist.) had a problem where
> the car would start just fine, but just above idle it would start to
> misfire, but when the RPM was raised higher it seem to run just fine.
After
> I tore the carb. down THREE times I was convinced that it was not the carb.
> (which he seemed to think was the problem). I decided to check the timing,
> as soon as I put the timing light on I could see the timing was missing (no
> flash) along with the miss of the engine. So now I knew that it was the
> ignition that was the problem, I decided to start with the coil, he had one
> of those big yellow Accel Super Coils, I changed the coil, engine ran fine.
>
> Again, I don't think that these things are your problem, but it helps to
> eliminate anything possible.
>
> The specs you gave are interesting to me. When you said "15 degrees
> advance" is that distributor degrees or crankshaft degrees? And what do
you
> mean exactly by "10 degrees retard"? This distributor (that I can tell)
> isn't one of the type that had the vacuum retard function that was popular
> with emission type distributors in the late 70s (and is worthless on
> Tigers). I would think if you can move the rotor back 10 degrees (that's
20
> degrees on the crankshaft) from the stopped or idle position, that would
> indicate to me that the distributor is the culprit. Take the point plate
> off and inspect the fly weights and their movements. You should be able to
> move the rotor ONLY to the left (advance) against the springs from idle or
> stopped position, if you can in fact move it to the right (clockwise) then
a
> weldment of some sort has come loose or broken. You should not be able to
> move the rotor any further than the limits of the flyweights. I've only
> recurved one Mallory distributor (the case above) so I'm not that familiar
> with the inside as I am with the Ford dist. They both have the same
> principle of flyweights, but just a little different.
>
> Keep us posted, this is fascinating!
>
> Jerry Christopherson
> 9473187
>
> -----Original Message-----
> From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
> On Behalf Of Gary Pointer
> Sent: Monday, March 26, 2012 9:19 PM
> To: tigers@autox.team.net
> Subject: Re: [Tigers] Timing deviates - advice needed
>
> Once again, thanks all, for your responses.
> Per Mayf's suggestion, relaying here a few details:
> Model: Mallory Dual Point YC-449-HP
> Motor: 302 CID. Year unknown. Stock internals.
> Other: Moves smoothly to about 15 degrees advance, and 10 degrees retard.
No
> stickiness.
> New points, rotor, coil, wires about 2500 miles ago.
> A couple folks asked for pics: http://www.flickr.com/photos/tigerv8
> The suggestion was made of installing a substitute, to prove/disprove
> distributor issue. No many cats in these parts though (St. Albert, Alberta,
> Canada).
> _______________________________________________
>
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