Interesting info about your guide removal Perelet. It looks like you skipped the usual method of boring/drilling and opted to "pull" them out. These heads require unusual practices to remove the guides. This is why you should send your Porsche heads to someone who knows the methods. Otherwise, you get cracks in the valve guide boss-
http://forums.pelicanparts.com/911-engine-rebuilding-forum/923318-1997-3-6-l-varioram-engine-hospital-needing-diagnosis.html
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1991 964 C4 Cabriolet - drop-top pylon destroyer
Last edited by nickd; 03-10-2017 at 08:51 AM..
Reason: Initially mis-read
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