What is this called?

[TripleNickel]

Originally Posted by turp23

Anyhoo, what's with all the springs, the kit came with 5 sets. I only need 2. Which ones do I use? Just pick the ones that match the old ones?

The springs control how the advance rate of the distributor, for ignition timing.

The heavier the spring (silver ones in your case) will slow down how quickly (RPM wise) the timing goes to full advance.

The lighter the spring (gold ones it appears in your case) the more quickly (RPM wise) the timing goes to full advance.

If you were happy with your vehicle's performance before the problems, go with the springs that seem to be the closest match to your old ones.