I decided to dig into one of the EZ30D Gen 2 motors that I got from Cobb’s race program. I knew it was ‘built’ to some degree, but I didn’t know exactly to what extent.

I knew it had custom made camshafts (by Kelford), which are billet steel cams made specifically for the EZ30D Gen 2. The factory camshafts in the this motor have variable intake timing as well as a variable left system designed by Porsche.

You can see the ‘Germany’ marking on the factory intake cam buckets. I believe these buckets are almost the same as the turbo 996 ones.

These cams replace the factory system and do away with the variable lift. Since the lift system is part of the bucket tappets, you have to switch to using the normal exhaust side buckets with variable sized under bucket shims.

The heads have been clearly rebuilt, and new larger size intake and exhaust valves installed.

The biggest surprise was that the block was sleeved. I think the pistons are custom from CP with a coating on them. I’ll finish removing the heads, then crack the block open and check the bearing clearances, rod setup etc. I suspect this has the custom Crower rods designed to use EJ rod bearings instead of the slightly smaller EZ rod bearings.

It is always good to find things looking this nice on disassembly.