I have twin 400 turbo 6V53 Detroit Diesels with 2900 hours in the boat that I just purchased. I would like to add pyrometers to my gauge set to monitor
heat before the water
temp goes up. Does anyone have any recommendations for a good reliable Pyrometer at a reasonable cost? Do any of them have alarms?
Also, from what I have read, it seems that the best location for the sensors is in the exhaust
manifold ahead of the water
jacket, rather that at the turbo outlet. Do I have this correct? Do you need to drill and tap the manifold?
I am a little concerned that I am not getting the 2400 RPM
under full throttle cruising as the engine
manual said the engine
should reach. The surveyor
indicated that he thought the prop size was wrong, but after he checked the calculators, he reported that the props were properly sized for the size and weight of the boat. It seems that a pyrometer would tell me if I had a problem or not because if the engines were being overworked the exhaust
temp would rise significantly. I am also not certain of the accuracy of the tachometers. One reads higher than the other when the engines are synched. I think the surveryor said that the lower reading was the correct one when checking with his hand held tach down in the engine bay. I am not sure if I have a problem, or not.