Well just spoke to Lee.

He stripped the engine today, and found the oil pump had shattered. As the KMS ECU is linked to the oil pressure and designed to shut the engine down if it drops it saved the engine before Lee even noticed as it seems the head lifted at the exact same time. This occured the first time he tried to put 2.2 bar through it, and rev limit was 7600rpm.

The ECU saved the engine by the way; bottom end looks fine, just needs a new pump.

It's a shame but then this was the whole idea of the test; to determine whether the new much more expensive engine would need it.

Lee is still testing though, he's planning to machine a nylon bush into the crank/pump to take up some slack in order to see if it is 110% the nose of the crank flexing. The bush won;t last in the long term of course, it's just to be sure of what went wrong.

Fair play!