Advance springs

Boduke said

Can someone point me in right direction with respect to distributor advance springs

Stock 318 /stock converter 904/273 rear gear.. driver.

The stock springs are smoked and im getting some mechanical advance at idle causing the timing to jump around.

I prefer a smooth idle. Here is what I am working with.. one soft and one heavy spring. See pics.. heavy is stretched out.

I idle about 700-750..

Looking for a starting point on what springs and where to buy.

Ive searched and the choices are exhausting. Just looking for recommendations on what works for mostly stock setup. Maybe a little hotter than stock

Thanks.

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Good news. That's heavy spring is not stretched out. That loop is there on purpose. it causes the advance to slow down around 1600 rpm.

That and the slight angle on the plate is all part controlling the curve.

The small diameter spring maybe getting a bit stretched and this will effect when the advance begins.
Pull one from another distributor, or ask (not here! or moderates will shut the thread) for one and someone will have. They are not all the same but get one with the about same number of coils diameters and you'll be close.

However there are two other ways to add tension.
1. Bend the loop a little tighter. This is a bit tricky.
2. Turn the spring perch if its not already in the max ternsion position.
First time can be difficult and sometimes requires turning it from underneath, which in turn requires taking it out of the housing.
Photos in this post