spark plug gap closed on two plugs, what causes this? Options

[siverson]

hi - quick question from the garage. cdi box died on my six. got replacement and car starts right up (good). but runs like crapola right away. pulled the plugs and on two the electrode (term?) is no touching the plug.

is this why my cdi boxed died?

or is this a result of it dying?

or?

plugs were 1k miles old. cdi box was 46 years old.

[veekry9]

(Pelican Pix)
They can look as bad as this before they leave the engine.
https://www.google.ca/search?q=porsche+911+...rP5n8IZN9mSM%3A

What you typed:
"...pulled the plugs and on two the electrode (term?) is no touching the plug."
What you meant:
"...pulled the plugs and on two,the cathodes are now touching the electrodes."(meaning,the gaps are closed)

The closed gap will indeed ruin the output transistors of the cdi amplifier.
Carbon buildup on the pistons are usually the culprits,running way rich and or lousy valve guides or poor ring sealing.
A short term fix is a shim for the plugs,to recess them up,away from the pistons.
For sure use copper formula antiseize on the plug threads.
https://www.google.ca/search?q=copper+anti+...RjOD2EQ_AUIBigB
A look inside to check the condition of the cylinders,with your recording borescope,will give a good reading of the overall condition.
https://www.google.ca/search?q=recording+cc...1JWDlQrLkBnM%3A
Roll the engine over to look at each valve in turn,(12),inspecting the seats and valve head.A comprehensive leakdown test is next.
A black,wet looking carbon deposit on pistons,chamber and valves means it's time for some headwork,at minimum.
A single plug six is sensitive,and must be maintained,otherwise..(Kaboom!).
BTW,a solid state ignition makes a hotter spark,the signal edges much sharper than what mechanical points can produce.
http://www.123ignition.nl/brand/porsche.html
There,spent some of your money in a most cost effective way,avoiding the inevitable explosion,and rod through block tears.
(IMG:style_emoticons/default/biggrin.gif)
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https://www.google.ca/search?q=spark+plug+s...8dHcfDRqr2aM%3A
Bill Jenkins found hp by indexing the plugs in his prostock 'sbc'engines,so too should the gap be pointed into the center of the cylinder of the 911 'hemi' engine.
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