You choose - loaded gas or basic diesel?

B3yond Iris wrote:

otrfun wrote:

B3yond Iris wrote:

otrfun wrote:
Ok, time to refocus things. HP is a product of Torque and RPM (HP = TORQUE X RPM / 5252).

I'm not sure how that HP=Torque X RPM/5252 came into play,but I personally have never seen it come true for any engine

Take the 6.2L GM engine with
420HP @5600RPM
460 Torque @4100RPM
Following that formula it would be as following
HP=(460*4100)/5252 Which equals 359.101

The formula is just a general guideline. There are mass, friction, and combustion issues that enter into the overall design of an engine that are not reflected in this formula.

FWIW, I could be mistaken, but I believe this formula calculates the torque being produced at the same RPM when maximum HP is being produced. Using the numbers you provided (and this formula), 394 ft. lbs. of torque are being produced at the same time 420 HP is being produced at 5600 RPM.

The general point I'm trying to make (with this formula) is that there is a give and take in terms of HP, Torque, and RPM. Some seem to think that HP is the cat's meow all by itself--that an engine with tons of HP will some how perform better under all conditions without any regard to its torque characteristics--that is simply not true. Again, HP is the product of Torque and RPM. Change one variable, and the other one or two variables must change, too.

Thank you for explaining that. But thankfully with the way the engines have been able to produce their power its getting closer to the point where people can have their cake and eat it too.

Yup, engines have come a long way in the last 10-20 years. It's amazing how engineers have been able to increase HP and torque and decrease fuel consumption at the same time. I agree, it's almost like we can have our cake and eat it, too :)