We are the global leader in M96/97 Porsche cylinder head rebuilding, repair and R&D.
Samples Of Our Work
These photos will educate as well as show off the pride we take in our work. Enjoy!
Mezger 911
Many Porsche enthusiasts are of the opinion that the air-cooled Mezger engine is the zenith of all Porsche production powerplants. A position that is hard
M97 3.6 Porsche Explosion Repair
Doesn’t get much worse than this.
M97 Failures Sparkplug Removal warning
When these engines go kablooey and you know it’s going to have to come down, do yourself a favor and resist the urge to pull
How to box heads for shipping
How to easily package heads for safe transport. Please read before shipping.
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
Meet the Flowbench
Our commitment to Porsche cylinder head R&D is unparalled. With this in mind we recently upped our flowbench game and designed a unique, super high-powered flow bench that incorporates the latest in digital aquistion and super precise computer controlled depression. And best of all: We can’t hear it.
About Us.
Founded in 1996 by me, Len Hoffman, Hoffman Automotive Machine is a small business located in Watkinsville, GA that puts the small in small business.
M96/97 Port Work
The purpose of this article is to address port work for the 3.4 996 and 3.4 987 and 3.6 996/997 heads. We field a lot
hamheads.com 
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