[TR] can you tell a rotor?

[Barry Schwartz]

I had the same problem (without the bad connector, but do have a sport coil
as well as an Allison ignition) on my GT6 - Went through many bad rotors
and fairly quickly,  till I finally found the problem -

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>---- emanteno at comcast.net wrote: 
>> I've heard some of them crack and arc, leading to misfires or no
starting/running.
>
>I wonder though, how many times those incidents include other upgrades to
the ignition system, like Lucas Sports coils.  The rotor has to withstand
any increase in voltage, and the path from the contact arm to the
distributor post isn't very long at all.
>
>Caravanning home from VTR 2000, a local club member had a new rotor
(installed @ VTR) fail on his TR4A.  Failure itself was invisible, a carbon
track through the interior of the rotor, grounding the spark to the dizzy
shaft.  He had a Lucas Sports coil, and, as it turned out, a bad spark plug
connector that evidently allowed the coil to develop more voltage.
>
>Randall

Barry Schwartz
La Mesa, CA (San Diego)