Funny you post this here
why you may ask ? well it happens that I work for this company for the last 7 years we are what they call "service engineers" we work on these babys day in and out a day like today Im working in a 380mm bore a much smaller scale but from the same family I have work on our 850mm series which is one below this one and yes nice to take a nap in the crankcase.
Tim they use a test bed,"a dyno like" must of the time is a generator and they measure the KW output.
Nice ha
9-10 months out of the year 14-16 hours a day not so nice after all