B3 Racing Engines Geometry Kit

Mike is a great guy to work with. I nearly lost a motor due to valve train instability that was a result of weak valve springs and improper rocker geometry, which combined to eat the needle roller bearings out of my exhaust rockers and dump the cage bits into my engine.

Dwayne Porter identified the weak springs and how my intake pushrods were dampened by ever so slightly touching the heads as the reason only the exhaust rockers were damaged. I sent my heads to him for a full hard parts change and head rebuild, and to select a solid roller to replace my hydraulic roller.

Long story shorter, I sent the measurements Mike asked for to him, and he recommended not only his custom adjustment package, but also spec'd out a set of custom designed T&D rockers that optimized the rocker setup for my after market Indy EZ heads. He even had T&D change the angle and position of the adjusters and the offset on the rocker shafts. He knows this stuff!

The results are just as dramatic as what you posted here. I'm still mocking things up, and will post some before and after pics. It's simple mechanical theory, but so many of us just bolt on what we get without ever optimizing the geometry. It does matter.