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Originally Posted by Brucelee
I don't get the sense that the older air cooled engines imploded at anywhere nearly the rate as these newer designs.
Any thoughts on that?  |
There were problems with the cam chain tensioners that plagued engines for years (finally fixed), issues with the 2.7 L case, I"m sure there are gobs more issues. That said, the bottom end of the air-cooled sixes were capable of going as much as 300K before rebuilding.
However, I don't think that any of the air-cooled six variants had the failure rate of the early 996 motors, but Porsche isn't talking so facts and figures are hard to come by.
Other significant Porsche engine problems: early 944 cam belts (snap!), 928 Nikasil blocks, etc.