So I am in an automotive program at my local community college and yesterday was like my 3rd class. Well there is this guy that always talks about Chevy's and always has something to comment about or say about his stupid blazer. But the funny parts is yesterday we are having a discussion and he goes and I quote "my buddy took his serpentine belt off is a/c pulley and gained like 3-5 HP" LMAO The teacher about busted a nut he was laughing so hard, and yes this is a beginner's class, but he always talks about fixing up this and that, so if this true (which i think he likes to tell stories) then I think basic knowledge would tell you there is like .000000000000000009 gain of horsepower...maybe.
Funny Story...
95BlackGT5.0!
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So I am in an automotive program at my local community college and yesterday was like my 3rd class. Well there is this guy that always talks about Chevy's and always has something to comment about or say about his stupid blazer. But the funny parts is yesterday we are having a discussion and he goes and I quote "my buddy took his serpentine belt off is a/c pulley and gained like 3-5 HP" LMAO The teacher about busted a nut he was laughing so hard, and yes this is a beginner's class, but he always talks about fixing up this and that, so if this true (which i think he likes to tell stories) then I think basic knowledge would tell you there is like .000000000000000009 gain of horsepower...maybe.
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Take drag of the accessories creates more power. You are the dumb one and he is not. You are both dumb for entering automotive programs to begin with though imho.
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The ac is a clutch type setup so there really isn't any drag on the motor until the ac is on.
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Were on a mustang forum, which means we all have one belt. If you take that belt off it's going to deminish drag plain and simple. I do understand that most econo cars run a seperate belt of a/c and power steering, but in this instance, it's not the case.
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It may create less drag, it's not a significant amount that's going to give you huge gains or HP gains that's the point. As far as joining the automotive program, well that's a matter of opinion.
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And 3 to 5 is a huge amount?
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you're not going to gain 3-5hp by taking the belt off the ac... as flyin ryan said, it's a clutch there is pretty much no drag until you turn the ac on. you would gain less then 1hp by removing the belt. not to mention he would need to buy a new shorter belt.
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the four cylinder mustangs have a separate belt that runs off the crank for the AC compressor.
I graduated from New England Institute of Technology with an Associates degree in Automotive Technology...........but I guess that makes me stupid in your eyes because I went through an automotive program
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To straighten this all out. . .
You do not gain horsepower. The motor makes what it makes and you subtract power for the accessories. You will only recover horsepower that is being lost to parasitic drag from motor accessories. Its not going to be a consistent amount due to changes in temperature, what you have on and off at any given time and lets be realistic. There is a difference between true race cars and street cars. And the gains from under drive pulleys are minimal especially because non of our car (unless stripped down) are light enough to really notice 3-5 horses.
You do not gain horsepower. The motor makes what it makes and you subtract power for the accessories. You will only recover horsepower that is being lost to parasitic drag from motor accessories. Its not going to be a consistent amount due to changes in temperature, what you have on and off at any given time and lets be realistic. There is a difference between true race cars and street cars. And the gains from under drive pulleys are minimal especially because non of our car (unless stripped down) are light enough to really notice 3-5 horses.
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You gain horsepower at the wheels. Thus, gain horsepower. :yes
In this specific case, you won't gain anything. But the concept will provide more horsepower to the wheels.
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Touche, however, I will still argue while you are "gaining" horsepower at the wheels, you are still "recovering" the horsepower back by reducing parasitic drag. You can never have more horses at the wheels then you do at the crank. There are numerous place that cause the loss as we are all well aware. Friction sucks.
Again you are right in this scenario. . . the point is moot.
An example is an electric water pump. Designed to give you the lowest amount of loss and the most horsepower transfer from the motor to the wheels.
Again you are right in this scenario. . . the point is moot.
An example is an electric water pump. Designed to give you the lowest amount of loss and the most horsepower transfer from the motor to the wheels.
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Here's the way I interperate it. Imagine punching someone. In the original scenario, you are punching someone in a pool. You are able to punch them with a force of say 50 pounds. In the next scenario you get out of the pool and punch them. You will punch them with more force, say 75 pounds.
IMO, you have created more power. Why? Because the end result (the one you care about) has more power. BUT, it is true that your muscles created the same amount of power. That's where you stand in saying you have not made more power. It's all in how you interperate everything.
You will gain no increase in power from each explosion by removing the AC. But the net power output from the crank will increase due to less resistance to it turning (ie, the torque of turning the AC compressor).
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I would agree with that.
My point of view is this, lets say a stock 5.0. . . makes 225hp. Lets just say that figure is the motor running with no accessories. No anything. . . on a dyno. you add an alternator, waterpump, ps steering etc. Now your crank output is 215. Now you put it in a manal car and chassis dyno it and lets your wheel hp is 190. You can only gain back or recover power by reducing drag is all I am getting at. At the wheels or at the crank it doesn't matter. The motor still only makes 225 available subtracting whatever drag is created.
You are already making the power but you are losing it to drag and getting it back isn't really a gain, its recovering lost power. You install a supercharger and you are gaining power that you were not making.
And I agree wheel HP is much more important except to increase that you have to recover as much as you can by reducing drag on the motor.
I see what you are saying in your pool example and I feel we are saying the same thing just in different ways. And everyone has different ways of looking at things.
We certainly can agree that when the AC isn't running that compressor has such a little amount of drag that you will not gain or recover enough to tach an extra mile per hour.
My point of view is this, lets say a stock 5.0. . . makes 225hp. Lets just say that figure is the motor running with no accessories. No anything. . . on a dyno. you add an alternator, waterpump, ps steering etc. Now your crank output is 215. Now you put it in a manal car and chassis dyno it and lets your wheel hp is 190. You can only gain back or recover power by reducing drag is all I am getting at. At the wheels or at the crank it doesn't matter. The motor still only makes 225 available subtracting whatever drag is created.
You are already making the power but you are losing it to drag and getting it back isn't really a gain, its recovering lost power. You install a supercharger and you are gaining power that you were not making.
And I agree wheel HP is much more important except to increase that you have to recover as much as you can by reducing drag on the motor.
I see what you are saying in your pool example and I feel we are saying the same thing just in different ways. And everyone has different ways of looking at things.
We certainly can agree that when the AC isn't running that compressor has such a little amount of drag that you will not gain or recover enough to tach an extra mile per hour.
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I wish I could get back the 45 seconds of my life that I spent reading that analogy.
The crank turns, there are things attached to both ends of it. The less power it uses turning things on one end, the more the other end can get. It's that simple
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people remove ac to remove weight
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decide if your car is a race car or a street car. . . then proceed.
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You make a lot of assumptions don't you?
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If it took you 45 seconds to read that post, please graduate the 4th grade and come back later.I wish I could get back the 45 seconds of my life that I spent reading that analogy.
The crank turns, there are things attached to both ends of it. The less power it uses turning things on one end, the more the other end can get. It's that simple
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I made it through 6th grade thank you.
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+1
I agree. And any Horse Power that is recovered from removing the A/C will be next to nothing.
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