[T3] T3 - update (formerly, What have I done?)

["timothy kuehn" <keen_tj@hotmail.com>]

<x-flowed>Couple weeks back, I shame-facedly admitted to you all that I'd screwed up 
something, while conducting a high-RPM acoustics experiment inside a 
tunnel... couple seconds of overzealous revving led to a semi-consistent 
miss/sputter, the cause of which I could not isolate.

After normal tune-up procedures, the symptom disappeared, and daily driving 
resumed.  Had the good fortune to be working very near home for a few weeks, 
so never had to use the freeway.
'Til yesterday, when I did about 50 miles at a steady 60-65 mph.  Once back 
on surface streets,  the identical problem resurfaced.
Here's what I found when I got home:  A lot of silvery dust inside the dizzy 
cap, and a large burr on the fixed point.   I'd noticed a little bit of this 
dust last time around, just blew it away and went about my business.  But 
now there's a ton of it, on points and plate and shaft and all over the 
inside of the cap.
Filed the burr, reset the gap, swapped in a clean cap and rotor, and the 
car's happy as a clam.
But what's with the metal shavings?  And how does speed/RPM factor in?

--timmy
'72 square
redondo, ca


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