[Wayne 962]

Porsche is no stranger to engine problems and issues. These are no different than the ones in the past. I will refresh everyone's memory, as I wrote a book on all of these issues (with the air cooled engines)

1965-68 - Pretty good bullet-proof aluminum block

1969 - Weak magnesium cases, and an intermediate shaft bearing that wore through the mag block

1970-1977 Mag blocks that often pulled studs, had cylinder spigots that got out of alignment, and also had pulled head studs (1975-77 in particular, with the five-blade fan + thermal reactor fiasco). Some of these mag case engines leaked oil while still on the showroom floor!

1978-89 - Dilavar head studs breaking

1965-83 - All engines suffered from sporadic chain tensioner failure, which is similar in nature and destruction to this most recent IMS issue

1990-1998 - All 964s and 993s have valve guides that don't appear to last as long as the older models. This can cause soot to build up in the emissions system and cause a check engine lamp error.

1997-2008 - IMS, rear main seal, etc. Nothing unusual when compared to the past history of engine issues.

-Wayne