Ford 2.7 Ecoboost - power question
This looks like a great engine at 325HP. That is about the same power as my trusty 5.9 Cummins ISB. On edit: If each engine is in a 1 ton chassis and matched to it's proper transmission and re...
Forum Discussion
That's simple. You run the 375lb-ft engine thru a gear ratio so the torque at the wheels matchs the torque from the 600lb-ft engine.
To keep the speed the same, you run the 375lb-ft engine at higher RPM. If you think about it, most of the diesels top out in terms of HP around 2000rpm. The gas engine is likely around 3500rpm. So run in a lower gear at higher rpm and you get the same HP and torque at the wheels.
Think of it this way, if you can't break a nut free when working on your engine with a standard wrench, you can double the torque by adding a cheater bar but to unscrew the bolt you would have to move the end of the cheater twice as fast to remove unscrew the bolt at the same speed (a nut is a bit different in the sense that torque requirements drop drastically once you break it free)
To keep the speed the same, you run the 375lb-ft engine at higher RPM. If you think about it, most of the diesels top out in terms of HP around 2000rpm. The gas engine is likely around 3500rpm. So run in a lower gear at higher rpm and you get the same HP and torque at the wheels.
Think of it this way, if you can't break a nut free when working on your engine with a standard wrench, you can double the torque by adding a cheater bar but to unscrew the bolt you would have to move the end of the cheater twice as fast to remove unscrew the bolt at the same speed (a nut is a bit different in the sense that torque requirements drop drastically once you break it free)
