I was asking about the CR because they tweaked it between the 1125-1190RS-1190RX/SX. They only changed it by less than 0.9. 14:1 is the cut off for pump gas on a naturally aspirated engine with out getting into detonation. Our bikes are on the hairy edge then backed off just a hair. That's one of the reasons they run hotter than other bikes. I was just wondering about how they addressed the squish area of the combustion chamber for the quench effect with the overbore.
Either they didn't torque cylinders/heads correctly or they didn't space the ring gaps correctly or something. Gaskets/improper torqueing are a good bet. Even if they didn't get the ring gaps correctly spaced, the excess pressure in the crankcase shouldn't put water in the oil, but oil in the water. To blow a gasket from excessive crankcase pressure would exceed the water pressure and relieve the pressure into the cooling system, not the other way around.
I wouldn't even crack the engine again until the oil has been changed and the gaskets replaced. Take off the oil filler cap when you try to restart again to vent any possible crankcase buildup of pressure just in case the gasket wasn't the root cause. I would want a compression check (bleed down) after the repair just to make sure before I tried to restart. Just for ***** and giggles I would also want to pressure check the cooling system. It wasn't designed for pressures exceeding 20-25 PSI.
Sorry you are having gremlins. I plan on doing this same mod on my spare engine.