On the topic of plugs, the most interesting change I noticed when I
changed to autolite plugs was the very distinct drop in interference on
the AM dial. The champions and motomaster plugs were really bad for
this.
James
Robert Dervin wrote:
>
> Already tried the Autolite thing (3 different heat ranges), the Champion
> thing, the Bosch thing, the retarded timing thing. Actually spent 55
> exhaustive hours on a chassis dyno logging and adjusting total advance with
> a knock sensor and an exhaust gas analyzer. With this vehicle, Splitfires at
> a .40 gap have the least amount of ping. Champions had the most amount of
> ping. Ended up at 6 degrees BTC initial and 19 degrees total advance at an
> early 1500 rpm. Logged 245 hp at the rear wheels @4200 rpm.
>
> Also installed a Pertronix electronic ignition module and a 40,000 volt
> coil.
>
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