Looks to me from image 3 at the bottom of the page that the whole unit unthreads...

		workmandan on Aug 9, 2017 \| parent \| context \| favorite \| on: SKYACTIV-X: first commercial gasoline engine to us... Looks to me from image 3 at the bottom of the page that the whole unit unthreads: http://www.mahle-powertrain.com/en/experience/mahle-jet-igni...