1945-01-01

Effect of Post-War Automotive Practices on Ignition Performance 450204

POST-WAR engines, Mr. Hartzell feels, will have about a 9:1 compression ratio.
If the ignition systems on these engines are to function satisfactorily, the author suggests that manufacturers make the following provisions:
  1. 1.
    Waterproof the ignition system.
  2. 2.
    Provide the lowest possible capacity to ground in the secondary system.
  3. 3.
    Use aluminum oxide spark-plug insulators.
  4. 4.
    Use a 12-v system.
  5. 5.
    Keep the breaker compartment free from oil vapors and dirt.

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