How to get a 512BB engine apart

There were a bunch of leads as to why this engine overheated but we aren’t sure exactly which problem led to its demise. The water pump looked nasty, maybe it failed and blew all the water out of the weep hole or maybe the head gasket failed. Once we finally got the case split, we found that the cylinder protrusion on the 7-12 bank was .007-.012″ where it should be about .003″ from the deck surface so the gasket may not have sealed around the water passages.

Since the engine was burning a little bit of oil when it ran and the 2nd gear synchro needed to be replaced, it reinforced the need to overhaul this drive train. We are thinking of enhancing the engine with slightly higher compression pistons and increasing the flow by matching the intake manifolds and testing and enhancing the intake and exhaust ports.

A problem with the Ferrari Boxer design arises when you wash the car or drive it in the rain and water pools around the main bearing studs causing a major corrosion issue between the case and the studs, “gluing” the halves together. We made steel blocks that use the main bearing nuts to push the halves apart as you un-thread them but it didn’t work at all. We ended up making hardwood wedges to drive in with a hammer and 3 portable hydraulic cylinders so after nearly a week of labor the job was finally done.

Have a look at the massive amount of corrosion on the studs!

Boxer engine

Boxer engine

12 cylinder horizontally opposed

12 cylinder horizontally opposed

Case halves BB, BBI

Case halves BB, BBI

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