Engine-Exhaust Temps

[P69]

I got bored and took temperature measurements on different parts of the engine after it had been running, in gear, in the slip for about 45 minutes.

Not sure how this would relate to other engines.



Engine:  Universal Diesel M5444 (Kubota block, V1902)
All temps are degrees F
Measurements taken after 30 minutes running in gear at 2200 rpm
Measurements taken with IR thermometer within 2" of surface

When throttle was increased to WOT, after 1 minute, the highest temp on the dry part of exhaust riser was about 420 degrees on the "First Riser"


Thermostat housing:  167
Aft end of exhaust manifold:  175
Fwd end of exhaust manifold:  200
Exhaust flange:  300
First elbow:  380
First Riser:  400
Second elbow:  330
Horizontal:  300
Down elbow:  300
Raw Water input:  120
Flexible coupling:  100
Waterlift (fiberglass):  100
Exhaust hose after water lift:  110
Exhaust hose half way to transom:  87
Exhaust valve at transom:  85
Exhaust water output at transom:  117
Water temp between Hx and exhaust riser:  80
alternator case (no load):  81
Bottom of crank case:  180
Cylinder Head:  200
Fuel Injector:  120
Temp on Oil Filter fitting:  200
Oil Filter:  190
Water Pump (coolant):  160
Stuffing box:  95
V drive @ oil pump:  105