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Reply to "Testing 009 (style) vs Pertronix II SVDA Distributors. Engine temp issues at high speed"

Sounds to me like you still have too much timing. Some engines cannot tolerate 32 degrees and only can tolerate 29-30.

Do you have any idea what the static and dynamic compression ratios are?

If your heads and piston tops are loaded with carbon, pinging and overheating could easily be the result. You can "steam-clean" your heads by dripping water into each throat with the revs up around 3-4k. A good cloud of white smoke will come out when you do it right, and just do one at a time, engine hot and warmed up, preferably just after a good ride.

The simple fact that you had no overheating at 27 max advance with the SVDA is your clue.

Personally, I'd do the "steam clean" and install the SVDA and set max advance at 30 degrees and run it.

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