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Torque/HP curves
Ok, here's the deal. I drive everything using the tachometer. Yep, even my
2.5L TJ. I determine shift points according to torque rating for the engine. The problem is, I'd like to get my hands on a Torque vs RPM curve, - or tables. Usually, the manufacturer published a composite graph, showing Engine Torque and Horsepower vs Engine RPM. Not Jeep. Jeep doesn't even know what I'm talking about. Anyone out there have such info? Thanks Matt 97 TJ 2.5L 5 spd |
Re: Torque/HP curves
ambrin wrote:
> Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? Jeepers are not fond of Dyno's my theory is that we are sooo cheap that Dyno's would show us how little we gain modding our I6's (and especially the 4 bangers) that it would ruin our favorite pass time. And before you think I'm purely joking look at all the claims of 40 horse power for the 4.0 head swap (into a 4.2). -- Simon "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein |
Re: Torque/HP curves
ambrin wrote:
> Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? Jeepers are not fond of Dyno's my theory is that we are sooo cheap that Dyno's would show us how little we gain modding our I6's (and especially the 4 bangers) that it would ruin our favorite pass time. And before you think I'm purely joking look at all the claims of 40 horse power for the 4.0 head swap (into a 4.2). -- Simon "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein |
Re: Torque/HP curves
ambrin wrote:
> Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? Jeepers are not fond of Dyno's my theory is that we are sooo cheap that Dyno's would show us how little we gain modding our I6's (and especially the 4 bangers) that it would ruin our favorite pass time. And before you think I'm purely joking look at all the claims of 40 horse power for the 4.0 head swap (into a 4.2). -- Simon "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein |
Re: Torque/HP curves
ambrin wrote:
> Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? Jeepers are not fond of Dyno's my theory is that we are sooo cheap that Dyno's would show us how little we gain modding our I6's (and especially the 4 bangers) that it would ruin our favorite pass time. And before you think I'm purely joking look at all the claims of 40 horse power for the 4.0 head swap (into a 4.2). -- Simon "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein |
Re: Torque/HP curves
I don't think you'll find anyone that will waste their time dyno
testing the Jeep's 2.5 Liter four-cylinder, which generates 125 horsepower and 150 foot-pounds of torque to chart it. But the horsepower and torque curves will look similar to this six: http://www.----------.com/temp/4LEngineHP-Torque.jpg The most sensible way to shift is progressively, (like commercial truck drivers) that's increasing the RPMs with each shift as your speed increases, like there's no reason to max the horsepower pulling away from the stop lights in first gear, but as you as you know on a hill your tiny engine must be pegged right up against the governor in order for your top gear to take over. God Bless America, Bill O|||||||O mailto:-------------------- ambrin wrote: > > Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? > > Thanks > Matt > 97 TJ 2.5L 5 spd |
Re: Torque/HP curves
I don't think you'll find anyone that will waste their time dyno
testing the Jeep's 2.5 Liter four-cylinder, which generates 125 horsepower and 150 foot-pounds of torque to chart it. But the horsepower and torque curves will look similar to this six: http://www.----------.com/temp/4LEngineHP-Torque.jpg The most sensible way to shift is progressively, (like commercial truck drivers) that's increasing the RPMs with each shift as your speed increases, like there's no reason to max the horsepower pulling away from the stop lights in first gear, but as you as you know on a hill your tiny engine must be pegged right up against the governor in order for your top gear to take over. God Bless America, Bill O|||||||O mailto:-------------------- ambrin wrote: > > Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? > > Thanks > Matt > 97 TJ 2.5L 5 spd |
Re: Torque/HP curves
I don't think you'll find anyone that will waste their time dyno
testing the Jeep's 2.5 Liter four-cylinder, which generates 125 horsepower and 150 foot-pounds of torque to chart it. But the horsepower and torque curves will look similar to this six: http://www.----------.com/temp/4LEngineHP-Torque.jpg The most sensible way to shift is progressively, (like commercial truck drivers) that's increasing the RPMs with each shift as your speed increases, like there's no reason to max the horsepower pulling away from the stop lights in first gear, but as you as you know on a hill your tiny engine must be pegged right up against the governor in order for your top gear to take over. God Bless America, Bill O|||||||O mailto:-------------------- ambrin wrote: > > Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? > > Thanks > Matt > 97 TJ 2.5L 5 spd |
Re: Torque/HP curves
I don't think you'll find anyone that will waste their time dyno
testing the Jeep's 2.5 Liter four-cylinder, which generates 125 horsepower and 150 foot-pounds of torque to chart it. But the horsepower and torque curves will look similar to this six: http://www.----------.com/temp/4LEngineHP-Torque.jpg The most sensible way to shift is progressively, (like commercial truck drivers) that's increasing the RPMs with each shift as your speed increases, like there's no reason to max the horsepower pulling away from the stop lights in first gear, but as you as you know on a hill your tiny engine must be pegged right up against the governor in order for your top gear to take over. God Bless America, Bill O|||||||O mailto:-------------------- ambrin wrote: > > Ok, here's the deal. I drive everything using the tachometer. Yep, even my > 2.5L TJ. I determine shift points according to torque rating for the > engine. > > The problem is, I'd like to get my hands on a Torque vs RPM curve, - or > tables. Usually, the manufacturer published a composite graph, showing > Engine Torque and Horsepower vs Engine RPM. > > Not Jeep. Jeep doesn't even know what I'm talking about. > > Anyone out there have such info? > > Thanks > Matt > 97 TJ 2.5L 5 spd |
Re: Torque/HP curves
Bill:
Do you have a link to a similar torque curve chart for the Jeep 3.7L V-6 and/or the 3.8L V-6 used in the '07 Wrangler? Tom "L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:43FE8B31.4D2DE526@cox.net... > I don't think you'll find anyone that will waste their time dyno > testing the Jeep's 2.5 Liter four-cylinder, which generates 125 > horsepower and 150 foot-pounds of torque to chart it. But the horsepower > and torque curves will look similar to this six: > http://www.----------.com/temp/4LEngineHP-Torque.jpg The most sensible > way to shift is progressively, (like commercial truck drivers) that's > increasing the RPMs with each shift as your speed increases, like > there's no reason to max the horsepower pulling away from the stop > lights in first gear, but as you as you know on a hill your tiny engine > must be pegged right up against the governor in order for your top gear > to take over. > |
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