Hannibal wrote:
I'm not the one stating opinions as fact about an engine I know nothing about. I was hoping you could enlighten me about the Merc 1350 with facts but all I got was baseless opinion. Then a diversion with the SB 350 and LS1.
Why does the little Cummins need to turn 5k rpm? HP? :B
The Cummins is turning it for wheel speed. From experience of building a few motors in my time tells me from the bore/stroke specs that motor will put out more peak hp than torque. It's all in the tuning.
Again, this is a marine motor, completely different animal and not a good example for this topic. Boat motor's full throttle operating range is specs to help with the propping of the LU. It is not the red line of the motor just the most efficient WOT range . Example, my Mercury Racing 250 Pro XS has an operating range of 5000-6000 RPMs but 6300 is when it sets an alarm. It came with a 5 year warranty and is designed to run at thoses speeds day in and day out. There are guys that play with these motors and turn 7-8000 RPMs day in and day out.
A 1000 hrs is a lot of hours on a marine engine unless it is a diesel unit.;)
