BillD
Admiral
- Joined
- Sep 1, 2011
- Posts
- 8,399
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- 4,217
- Boat Make
- 27 H&H with Cummins QSB 5.9 480 power
Something to ponder. Comparing engine HP.
Two great Cummins engines !!!
QSC 500 hp vs QSM 450 hp
8.3 liters 10.9 Liters
Weight?, QSM has about 1,000 lbs. more of IRON than a QSC.
Duty?, QSC, light vs QSM, medium to continuous duty
HP output, QSC at 1800 rpm maybe 200 hp vs QSM at 1800 rpm maybe 300-350 hp.
Torque?, QSC at 1000 rpm close to nothing vs.... QSM serious torque at idle to 1,000 for driving BIG hydraulics.
Maintainance?, QSM, about as simple and cheap as it gets in high annual hour usage. QSC, as in all high hp pleasure duty marine diesels, constant vigilance of SWAC circuit.
Which identical boat would win a buoy race on seatrial day??
The QSC, if that matters. LOL
For what it's worth,
Bill D
Two great Cummins engines !!!
QSC 500 hp vs QSM 450 hp
8.3 liters 10.9 Liters
Weight?, QSM has about 1,000 lbs. more of IRON than a QSC.
Duty?, QSC, light vs QSM, medium to continuous duty
HP output, QSC at 1800 rpm maybe 200 hp vs QSM at 1800 rpm maybe 300-350 hp.
Torque?, QSC at 1000 rpm close to nothing vs.... QSM serious torque at idle to 1,000 for driving BIG hydraulics.
Maintainance?, QSM, about as simple and cheap as it gets in high annual hour usage. QSC, as in all high hp pleasure duty marine diesels, constant vigilance of SWAC circuit.
Which identical boat would win a buoy race on seatrial day??
The QSC, if that matters. LOL
For what it's worth,
Bill D