Thread: Diesel Economy
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Old 09-01-2015, 04:50 PM   #18
Ddog
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You can estimate how much horsepower you are using
from your flo-scan liters per hour:

Diesel 5 hp/Lph (19 hp/gph)
4 stroke gas 4 hp/Lph (15 hp/gph)
2 stroke gas 3 hp/Lph (11 hp/gph)

eg a 454 gas engine burning 50 Lph (for example at 3000-3200 rpm) will be producing an estimated 200 hp

I think this '5/4/3' rule of thumb works best in the normal operating range of the engine, ie excluding idle and WOT
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