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Making the world better, one answer at a time. Coil springs typically last up to twenty five years. In fact, they are known to outlive the life of an average car. Coil springs typically last up to twenty five years. In fact, they are known to outlive the life of an average car.
The time that the ignition system gives to the coil for charge-up is called dwell.. With a points ignition system, dwell is fixed and is measured in terms of degrees of distributor rotation, typically 30 degrees for V8 engines, which is 60 degrees at the crankshaft.