A brief debunking of a common misconception about water cooled cylinder head cracks.
Tag: M97
Porsche 987/997 Valve Seat Issues
A detailed explanation of the valve seat issues that plague M97 engines.
A Tale Of Three Heads:The 3.4l Porsche Lineage M96,M97,9A1
I originally published this article in 2012. Though I’ve made major advancements in certain areas with all three of these heads, the basic info here
hamheads.com 
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