Quote:
Originally Posted by Foydawg
If I'm not mistaken, dedicated left/right heads would eliminate the need for the IMS. Am I coming off sounded jaded? Just wrote a check for $7K to fix my IMS & bearing. I ought to be.
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Not necessarily, the InterMediateShaft is utilized to reduce the revolution speed of the camshafts relative to crankshaft speed. Porsche has used the IMS for decades & never had problems until they chose to use a bearing at 1 end of the IMS in the Boxster. Designing parts so that they can be used in multiple locations on the same vehicle saves production costs. I don't know if the new design 9A1 engine has interchangeable head castings, but it doesn't have a IMS. Whatever "attitude" you have at the moment is quite understandable.
