Working in the shop on an old school L20B.  This engine while very basic and straight forward is a real treat to work on.  I love looking at the technology of its day to see how things worked and what was considered the “in” system of its time.

I’ve been busy working on many projects but this weekend I did some construction work on the L20B cylinder head combustion chambers.  From the factory these things are very small.  Lots of quench and lots of room for improvement.  So I took what I learned years ago in the V8 world and applied it to this cylinder head. (The similarities between this cylinder head and a domestic 2 valve Chevy head are strikingly similar)

So here are a little before and after pics.

Specs :

3 Angle Performance Valve Job

Milled Deck

Fully Worked Combustion Chambers

Up next is the short block and the rest of the assembly to put together.  This will be one mean L20B once completed.  I’m quite confident the customer will have great success with his new setup.