[Grady Clay]

Rob,

I didn’t mean to slight the 964 twin cap system. Yes, there all sorts of advantages there, cost being the most significant.

Who can shed some light on the reliability issue?

From a technical perspective, two 6-plug caps are far better than the 12-plug cap because of reducing the possibility of cross-firing. Remember, the 4-cam Carreras had two distributors and so did 917s. How about an engine with two 16-plug caps that Porsche made


Yes, you are correct. Each sparkplug has its own CDI; such is the diminishing cost of electronic systems.

Best,
Grady