Quote:
Originally Posted by NewArt
If you gently feel around with a brochette skewer or something , can you feel the piece?
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Yes I did that, I used a metal rod to more than gently explore the surface and the hole... it is solid.
Quote:
Originally Posted by 911monty
Looks to me to be an "oil fouled spark plug saver" type of device. The intent was to have a central port (the hole you see) for the spark plug to fire through, but prevent oil scraped from the cylinder walls from reaching the plug.
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That sounds like an explanation... I was thinking something like that, but more in terms of controlling the spark. If it is what you suggest is this common on Boxsters or Porsches and why only 1 cylinder?