4x4ord wrote:
gutfelt wrote:
4x4ord wrote:
Engine torque vs HP is hugely misunderstood. A gasonline engine capable of making 500 lb ft of torque @ 3200 rpm will absolutely outpull a diesel engine making 800 lb ft of torque at 1600 rpm. It's not that complicated.
Think of a diesel equipped truck traveling 40 mph with the rear axle turning 400 rpm. When the diesel is delivering its maximum torque on the crankshaft of 800 lb ft at 1600 rpm the torque on the rear axle at 400 rpm will be 3200 lb ft.
The gasoline equipped truck will be in a much lower gear to have the engine running at 3200 rpm while its rear axle is turning 400 rpm. It would be capable of putting 4000 lb ft of torque on the rear axle.
So yes torque is what gets the job done but torque has to be measured and compared on the rear axle to mean anything.
Ok now in the real world take a 425HP 1250 lb torque engine @1600
will your gas engine/torque example still out pull mine?
No it wont even come close and that's why you don't see 360HP ford V10 engines used in a 39-45foot Pusher motor homes that all have diesels the weight is too much for poor/low torque gas engines
What you see is 360 HP gas engines used in 22,000 lb MH passing 45 foot 35,000 lb MH powered by 425 HP diesel engines. The OP is looking at a MH with a 22000 lb GVWR.
Ok your post never mentioned weight that's why I use equal weight chassis even at 22K and the loaded 12 ft trailer she aint going up a 6% grade at 45 MPH unless shes hits the bottom at like 80MPH and then it will depend how long the grade is
