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re: F 250 vs. F 350. What should I be looking for?
Posted on 9/12/16 at 10:09 am to Hammertime
Posted on 9/12/16 at 10:09 am to Hammertime
It takes X horsepower to move whatever at a given speed. Producing X horsepower at higher RPM is less torque and more revs. Less torque = less strain on driveline stuff. It's a higher cycle count which does wear out certain things faster like bearings, but for the most part it's much easier on everything to be higher in the powerband.
The torque curve is for wide open throttle. You're operating on a load curve, which is exponential but usually pretty close to linear where the vehicle actually operates.
The torque curve is for wide open throttle. You're operating on a load curve, which is exponential but usually pretty close to linear where the vehicle actually operates.
1
Posted on 9/12/16 at 1:20 pm to DownshiftAndFloorIt
I thought diesel engines were designed to run between 66 and 75% full power running as a prime mover on an intermittent load? I understand efficiency goes up at higher rpms, but longevity of the engine itself and the transmission goes down because of heat and vibration. Running WOT wouldn't leave much room to make more power once the load hits.
I know you know more about it than me, so correct me if I'm wrong about that
Eta: I'm also curious as to what kind of fuel pressures you guys are getting in those red engines at WOT no load vs full load
I know you know more about it than me, so correct me if I'm wrong about that
Eta: I'm also curious as to what kind of fuel pressures you guys are getting in those red engines at WOT no load vs full load
This post was edited on 9/12/16 at 1:39 pm
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