anto44
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Sounds exactly like the set up I saw except with water instead of oil. They'd hook it up, it'd run through the run in procedure and then do an engine efficiency test for QC. Even a 6 cylinder diesel cat engine makes a serious racket when they do a pull from idle to max rpm under full load.I wired a dyno up at cummins diesel .engines were connected to a large waterpump by a prop shaft had a 100gallon water tank and a large radiator for cooling, rev counters heat censors the full lot connected to the computers for analysis . once run up to speed they pumped water round the system there was a big gate valve electricaly operated that they slowly closed and put the engine under more pressure to pump the water and made it work hard and readings taken. god it was noisy .engine was a 12 cylinder out of a massive dragline from the quarry