well to be honest ,thats not exactly true.one of the problems with a internal combustion engine is that torque falls off at high speed while hp increases.Look at some torque/ hp curves on various engines to see how this works. If you will notice ,if you have a chance to drive different vehicles, most vehicles these days running down the hiway these days are running at between 1800-2200 rpms. Thats generally the peak torque range of any engine.Let me try to give you an example of torque. Say you are trying to break a bolt loose with a 3/8 ratchet,you pull as hard as you can and it wont come loose,so you get a 1/2" ratchet pull on it and it breaks free.What have you changed? torque. a engines torque is set for the most part by the length of throw from center of crankshaft,to center of rod bearing journals.the longer this distance the more torque.BUT thats limited by a little thing called reciprocating mass.The longer this throw,the less rpms you can normaly run without engine simply flying apart due to mass.Take a engine out of a semi for instance,not unusual to find one with 1200 fts torgue with not what you would consider any great hp ,but if you rev that engine up as high as say you could a honda or bmw it would fly into a jillion pieces.To overcome this stock car racers and folks destroke them,simply put in a crank with less throw,longer rods to make up the difference and biuld a engine thats designed to run at high rpms. Thats why those folks use a flying start when racing,not enough torque at low speeds.On a pickup or family driver we want a trade off,we want good torque to pull trailers and things,but we want hiway performance also.That truck that you see advertised as having the highest torque is simply one that probably wont be as fast as others.AND it, if you could read the fine print,is just on a certain engine package. Heres the bottom line, torque does the work,hp is how fast that work gets done.
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Today's Featured Article - Talk of the Town: Winterizing Engines - To Drain or Not to Drain? - by Russ Berry. What is this strange attraction I have to equipment and machinery? How did I get this way? I came from the suburbs and own a small horse farm in rural Loudoun County, Virginia. You can call me a "weekend farmer." The local farmers do. Does it bother me? No. I am just happy to have their friendship. At least the word "farmer" is in my title. But what is the attraction? How can I explain the sensation and exhilaration I feel when I turn the key and hear the engine come to life (most
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