[T3] On a 73 T-3 SB fuel injected aut trans pinging .

[Jim Adney]

On 5 Dec 2017 at 16:41, William J wrote:

> They advance plates are different design yet fit the same . I did this 
> because the Pertronix base plate sits right on top of the braid ground on 
> the AH plate . The AF plate has the screw mount ball clip and the AH has one
> that snaps on a nub on the bottom of the lower plate and the shorter ground
> braid .

Over the years, there have been several changes in the design of the 
points plate. The snap one is the latest version, but, in general, 
they are all completely interchangeable. I don't have much experience 
with Pertronix, but there was one here a week ago, with the early 
design points plate. I didn't notice any interference with the ground 
braid, but it's possible that there was some variation in the exact 
spot where the ground braid was welded.

The Pertronix base plate is aluminum, so it's easy to file extra 
clearance in it with a round file. I had to do this in a different 
spot to insure that it could achieve it's full vacuum advance.

I also had to modify the Pertronix base plate countersunk hole 
because the distance between it and the dimple was too long, by about 
0.5 mm, so it didn't fit quite right on the points plate. I was 
pretty annoyed that Pertronix didn't get this right.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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