Re: 23rd Series 356 Engine Noise

Posted by Jim On 2008/12/13 18:05:22

JD,

You have two distinctly different springs in the side-by-side comparison.

On the left, you have a straight rate spring with 6 active coils. On the right, you have a dual rate spring with seven active coils.

I am sure this is the result of replacement with what ever was available at the time, because there is no reason in the world I can think of for having dual rate springs in a flat head engine.

With that said, I am not sure how this would cause poor running. The springs were not broken, the valves should have been closing. Were he stems varnished up?

Jim