Performance mods or re-gear??
JK Jedi Master
Joined: Aug 2007
Posts: 15,665
Likes: 4
From: Hammond Louisiana
All I know is when we have electrical issues at our facility we call the electricians, not Bob in accounting. Granted, where I work our electricians are truly experts so maybe I'm used to a different caliber. They run our self contained power plant which could power a city.
Don't worry, stay on here long enough and you'll get used to me.
JK Super Freak
Joined: May 2008
Posts: 1,279
Likes: 0
From: Grand Junction, CO
Never said not to use over drive. Just didn't care about it. If I get the below correct my overdrive will be where it belongs.
Apply above to any vehicle knowing where you want to power band to be and your done. Don't even have to look at the "old" charts, even though they tell you the same thing. This was relevant 40 years ago and still is now. Doesn't matter the vehicle. Somebody prove me wrong.
Apply above to any vehicle knowing where you want to power band to be and your done. Don't even have to look at the "old" charts, even though they tell you the same thing. This was relevant 40 years ago and still is now. Doesn't matter the vehicle. Somebody prove me wrong.
But hey, spend your money on whatever silliness blows your skirt up; you have to live with it; not me! I'm can only deal with so much malarky - I'm done!
JK Jedi
Joined: Feb 2008
Posts: 7,215
Likes: 10
From: Georgia
The power band is something that cannot be changed without changing the engine. It will be the same today, tomorrow and forever without engine mods, because the power band is a charateristic OF the engine, not the drivetrain. Wanting the power band to be somewhere else is nice, but impossible without changing what produces it to begin with. Gearing does not affect power output. All it does is effectively give you a longer lever to move the Jeep. You have to gear to match the engine's power band. You don't gear to move the power band. THe peak torque of these engines is acheived at 4k RPM. Since torque is what moves the Jeep, it would be optimum to try and get the Jeep to cruise speed just at the beginning of the torque curve rise. I don't have a JK torque/horsepower graph and I'm not wastin time huntin one down. Since torque is what moves the Jeep, you'd want to optimize the Jeep where torque is concerned. I would just guess about the 2500 rpm range. At least, that's where my Jeep starts to pull pretty good. If I fall below that, it tends to be a slug. You can talk "change the power band" til the cows come, but you won't do that unless you change the engine.
JK Enthusiast
Joined: Dec 2008
Posts: 216
Likes: 0
From: Colorado Springs, CO
Hey, what gives? You can’t say that; you’re not an expert. You need to back that up with the opinion of a tech somewhere. Or at least a chart!
I am astounded by the ignorance of many “experts”. Just because you draw a paycheck doesn’t make you an expert. The experts at the dealership were quite insistent that they couldn’t lower my TPMS pressure (this was before programmers that let us do it ourselves). I had to agree to pay for an hours labor regardless of whether they could lower it or not. They did and were quite surprised.
But your opinion is correct; even if you’re not an “expert”.
After reading that I don't even know what to say. Given your thought process I don’t think it would ever be possible to prove you wrong. Some of us are most concerned with what works and actually understand that we have on OD and that it does affect things. We’re interested in what has been proven to work.
But hey, spend your money on whatever silliness blows your skirt up; you have to live with it; not me! I'm can only deal with so much malarky - I'm done!
I am astounded by the ignorance of many “experts”. Just because you draw a paycheck doesn’t make you an expert. The experts at the dealership were quite insistent that they couldn’t lower my TPMS pressure (this was before programmers that let us do it ourselves). I had to agree to pay for an hours labor regardless of whether they could lower it or not. They did and were quite surprised.
But your opinion is correct; even if you’re not an “expert”.
After reading that I don't even know what to say. Given your thought process I don’t think it would ever be possible to prove you wrong. Some of us are most concerned with what works and actually understand that we have on OD and that it does affect things. We’re interested in what has been proven to work.
But hey, spend your money on whatever silliness blows your skirt up; you have to live with it; not me! I'm can only deal with so much malarky - I'm done!
JK Enthusiast
Joined: Dec 2008
Posts: 216
Likes: 0
From: Colorado Springs, CO
The power band is something that cannot be changed without changing the engine. It will be the same today, tomorrow and forever without engine mods, because the power band is a charateristic OF the engine, not the drivetrain. Wanting the power band to be somewhere else is nice, but impossible without changing what produces it to begin with. Gearing does not affect power output. All it does is effectively give you a longer lever to move the Jeep. You have to gear to match the engine's power band. You don't gear to move the power band. THe peak torque of these engines is acheived at 4k RPM. Since torque is what moves the Jeep, it would be optimum to try and get the Jeep to cruise speed just at the beginning of the torque curve rise. I don't have a JK torque/horsepower graph and I'm not wastin time huntin one down. Since torque is what moves the Jeep, you'd want to optimize the Jeep where torque is concerned. I would just guess about the 2500 rpm range. At least, that's where my Jeep starts to pull pretty good. If I fall below that, it tends to be a slug. You can talk "change the power band" til the cows come, but you won't do that unless you change the engine.
You're not moving the powerband, your utilizing it.
JK Enthusiast
Joined: Dec 2008
Posts: 216
Likes: 0
From: Colorado Springs, CO
JK Jedi Master
Joined: Aug 2007
Posts: 15,665
Likes: 4
From: Hammond Louisiana
Ya'll know what, a whole buncha this thread can be applied to what I've learned in real life, although not in a mechanical repair sense. I 've been in martial arts since I was 12. Have black belts in several styles. And you know what. I found a system 9yrs ago that summed up what it took me years in steet fights to learn what actually works. When I found the system KravMaga, I said to myself, this is the kinda stuff that worked for me when I really fought. Bottom line, no matter how many certificates you got, first hand experience in the shit will tell you what works or not, not a buncha charts and books or relying on what is supposed to be. In a nutshell take advice from people that have done what you wanna accomplish or learn it yourself. It's a journey either way, and you'll learn from it. Now, woffles-san , hope you the best, wherever your journey takes you. Damn, them 3 shots of Crown made me type alot.
JK Enthusiast
Joined: Dec 2008
Posts: 216
Likes: 0
From: Colorado Springs, CO
Hey, what gives? You can’t say that; you’re not an expert. You need to back that up with the opinion of a tech somewhere. Or at least a chart!
I am astounded by the ignorance of many “experts”. Just because you draw a paycheck doesn’t make you an expert. The experts at the dealership were quite insistent that they couldn’t lower my TPMS pressure (this was before programmers that let us do it ourselves). I had to agree to pay for an hours labor regardless of whether they could lower it or not. They did and were quite surprised.
But your opinion is correct; even if you’re not an “expert”.
After reading that I don't even know what to say. Given your thought process I don’t think it would ever be possible to prove you wrong. Some of us are most concerned with what works and actually understand that we have on OD and that it does affect things. We’re interested in what has been proven to work.
But hey, spend your money on whatever silliness blows your skirt up; you have to live with it; not me! I'm can only deal with so much malarky - I'm done!
I am astounded by the ignorance of many “experts”. Just because you draw a paycheck doesn’t make you an expert. The experts at the dealership were quite insistent that they couldn’t lower my TPMS pressure (this was before programmers that let us do it ourselves). I had to agree to pay for an hours labor regardless of whether they could lower it or not. They did and were quite surprised.
But your opinion is correct; even if you’re not an “expert”.
After reading that I don't even know what to say. Given your thought process I don’t think it would ever be possible to prove you wrong. Some of us are most concerned with what works and actually understand that we have on OD and that it does affect things. We’re interested in what has been proven to work.
But hey, spend your money on whatever silliness blows your skirt up; you have to live with it; not me! I'm can only deal with so much malarky - I'm done!
Did you try them out? Just curious. They do work. Funny part is they back up a lot of what people say on here. Using them if I go 4.56s on my X it puts me just into the lower end of the power band of the JK while still giving me economy when in 6th gear. 4.88s put me higher into the power band and puts me around the same as a stock Rubicon in 5th when in 6th gear. No guessing required.