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Old 11-29-2006, 07:55 PM
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Torque and HP

okay...i spose this is more for all cars and not just cobalts, but w/e

i thought of something a while back and havent really thought of an answer yet, so maybe you guys can tell me here...
if HP is directly based upon TQ (in that HP=TQ*RPMs/5252), then why would a car have a maximum torque at 4000RPMs but a max HP at 5500RPMs....shouldnt the graphs of each be directly proportional?
Old 11-29-2006, 11:48 PM
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does no one know?....or is everyone just too lazy? lol
bump
Old 11-29-2006, 11:58 PM
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try the formula man, they meet at 5252

the hp rating all depends on torque, so if at 5252 torque is a little lower than at 5200, means that his max hp. Some cars cant make max hp before 5252, like a diesel for example!
Old 11-29-2006, 11:59 PM
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Torque can drop off and still have higher hp because rpm keeps goin up which is part of your equation.
Old 11-30-2006, 12:08 AM
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Originally Posted by XenSS06
Torque can drop off and still have higher hp because rpm keeps goin up which is part of your equation.
Smarty pants made it simpler and right to the point!! nicely put bro!! I took like 1 hours of reading to understand this stuff!! but now i got it down
Old 11-30-2006, 12:19 AM
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Torque can vary on how the engine was designed to make power and when. The HP just shows the "work" that is capable of being done with the torque (or turning power) that the engine produces.

A truck engine for example makes most of its torque in the lower rpms to allow it to be able to tow/haul heavy loads.

Sports cars are lighter and go for torque on the top end to produce more high rpm power for acceleration.
Old 11-30-2006, 12:45 AM
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Originally Posted by XenSS06
Torque can drop off and still have higher hp because rpm keeps goin up which is part of your equation.
wow...i feel retarded....and now i have to go to my physics teacher n make him feel retarded as he didnt know either....
Old 11-30-2006, 12:51 AM
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haha no worries man, we all have to learn sometime!! Look it up on the web, some websites are very good at explaining this stuff, just be carefull and not read those bias websites, some are bias somehow on explaining this stuff!! haha I couldnt beleive it when i read a bias website on explaineing this stuff!! Bias in the sence that they said hp was more important than torque, when in reality HP is just an equasion. What u what is the longest and straightes torque curve possible!! This way you car can pull hard and long in a gear, and when shifting, your car will have a higher rev and make more power!!
Old 11-30-2006, 01:09 AM
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Originally Posted by HunterKiller89
wow...i feel retarded....and now i have to go to my physics teacher n make him feel retarded as he didnt know either....
Yeah, just show him a Honda Dyno graph. 240 hp @ 9,000 rpm = 140 tq.
Old 11-30-2006, 02:18 AM
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isnt torque just the domain/range of the hp even though the HP is a calculated figure?
Old 11-30-2006, 02:19 AM
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Originally Posted by martinsmu
haha no worries man, we all have to learn sometime!! Look it up on the web, some websites are very good at explaining this stuff, just be carefull and not read those bias websites, some are bias somehow on explaining this stuff!! haha I couldnt beleive it when i read a bias website on explaineing this stuff!! Bias in the sence that they said hp was more important than torque, when in reality HP is just an equasion. What u what is the longest and straightes torque curve possible!! This way you car can pull hard and long in a gear, and when shifting, your car will have a higher rev and make more power!!


How many times has this been brought up??? I LOVE IT!

1. http://www.micapeak.com/bike/FJR1300...que-power.html The Best!

2. http://vmaxoutlaw.com/tech/torque_hp.htm

3. http://vettenet.org/torquehp.html

4. http://www.allpar.com/eek/hp-vs-torque.html

5. http://www.procivic.com/pages-horsep...que/index.html

There is 5 sites that say HORSEPOWER is more important, I can find more if you would like. Please find just one site that actually explains things out and says TORQUE is more important in accelerating and remember we are not talking about towing or tractor pulls.
Old 11-30-2006, 02:19 AM
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Originally Posted by kyyankee
isnt torque just the domain/range of the hp even though the HP is a calculated figure?
Both can be calculated, both can be measured.
Old 11-30-2006, 02:32 AM
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Originally Posted by god+1
:
There is 5 sites that say HORSEPOWER is more important, I can find more if you would like. Please find just one site that actually explains things out and says TORQUE is more important in accelerating and remember we are not talking about towing or tractor pulls.
well...time to show your ignorance...we were both wrong when arguing earlier, but i admit it....torque and HP are directly proportional based on RPM....so theres really no clear winner
Old 11-30-2006, 02:34 AM
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haha closing my can of worms now
Old 11-30-2006, 02:47 AM
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Originally Posted by HunterKiller89
well...time to show your ignorance...we were both wrong when arguing earlier, but i admit it....torque and HP are directly proportional based on RPM....so theres really no clear winner
how did you come to that conclusion?
Old 11-30-2006, 02:47 AM
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Originally Posted by elmstreet
if an automatic 2.4 ss can beat a 06 civic si then horsepower obviously is not more important lol
Uh oh...you're opening up a Can of worms now...
Old 11-30-2006, 02:48 AM
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I don't like worms in cans.
Old 11-30-2006, 02:53 AM
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Originally Posted by god+1
how did you come to that conclusion?
HP=(TQ*RPM)/5252

if your HP is high, its either because your TQ is high, or your RPMs are high, the former of the two being better as you'd get a flatter HP curve

thus: HP is jointly protortional to TQ and RPMs
Old 11-30-2006, 02:57 AM
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Originally Posted by HunterKiller89
HP=(TQ*RPM)/5252

if your HP is high, its either because your TQ is high, or your RPMs are high, the former of the two being better as you'd get a flatter HP curve

thus: HP is jointly protortional to TQ and RPMs

ok I thought you were saying HP and TQ were inversly proportional to each other because of the RPMs
Old 11-30-2006, 03:01 AM
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Originally Posted by HunterKiller89
HP=(TQ*RPM)/5252

if your HP is high, its either because your TQ is high, or your RPMs are high, the former of the two being better as you'd get a flatter HP curve

thus: HP is jointly protortional to TQ and RPMs
And TQ is jointly proportional to HP and RPMs...glad we agree on that.

I would still like to see how I am wrong by saying HORSEPOWER is more important though.
Old 11-30-2006, 03:02 AM
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Originally Posted by god+1
I don't like worms in cans.
I'd rather put my worm in a hole as wide a can
Old 11-30-2006, 03:09 AM
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Originally Posted by NJHK
I'd rather put my worm in a hole as wide a can


OOOOOOOOOOOOHHHHHHHHHHHHHHHH SSNNAAPPSS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Old 11-30-2006, 03:10 AM
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Originally Posted by NJHK
I'd rather put my worm in a hole as wide a can
Why when a needle sized hole is plenty of room?
Old 11-30-2006, 03:11 AM
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god+1 ftw
Old 11-30-2006, 03:14 AM
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Originally Posted by god+1
Why when a needle sized hole is plenty of room?
Cause thats the best I can get. Typically, the needle nose ones take forever to get into and have brown residue lol


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