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Ac Bypass

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Old Sep 27, 2013 | 05:52 PM
  #1  
Mike Hannahs's Avatar
Mike Hannahs
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From: In the desert.
Ac Bypass

Ok i know there is a ac bypass pulley deal that can be bought and placed in the spot where the compressor goes but im looking for a belt that is smaller that will bypass it instead,i was wondering if anyone knows of one that will fit and do this,im needing a new belt mine is wearing out and im seeing s few cracks in it so i want to replace it with a smaller one that i will call a winter belt if you will,and then come summer time when i need ac i will buy a big belt to put back on for summer weather,my thinking to this is to keep me from having to remove the ac compressor,now im not sure if i even need to remove the compressor with the bypass pulley system, i dont even know if a belt will clear thing the way it should by not being routed on the compressor, if anyone has any part numbers for a belt or has did something that did or didn't work or some pros and cons they could help me with id love to hear any ideas thanks
 
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Old Sep 27, 2013 | 08:27 PM
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From: Monroe City in
Why dont you want the belt to run on the compressor during the winter?
 
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Old Sep 27, 2013 | 08:34 PM
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Im just looking to pick up a few extra mpgs if it will,someone once told me that if you run the heat on defrost in the winter the ac pump kicks on and off,i don't see how that could be myself and i never took the time to even check it,mostly im after a new belt and weighing some options.
 
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Old Sep 27, 2013 | 09:07 PM
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The A/C does, indeed kick on and off when you have the defroster running. It does so to remove moisture from the air going through the vents to help de-fog the inside of the windshield and windows. The A/C system acts like a big dehumidifier. Believe it or not, it really helps.

I don't honestly see you saving more on fuel than you will pay for a second (winter) belt, but to each his own.

I don't know for sure of a belt that will fit for this application. You would probably just have to take some measurements for what you think the length would have to be and try a few belts until you find one that works. With the A/C compressor sitting "on a corner" in the belt I doubt you would have to move anything, but I would have to look at it to be sure. I know that we did that on dad's Ranger when the A/C compressor died and the bearings in the pulley went bad, but his truck was offered with and without A/C so we just bought the belt for a truck without it, and changed the belt routing accordingly. To my knowledge these trucks weren't offered without A/C, at least I can't find a listing for a non-A/C belt.

Good luck!
 
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Old Sep 27, 2013 | 11:39 PM
  #5  
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Originally Posted by DIYMechanic
The A/C does, indeed kick on and off when you have the defroster running. It does so to remove moisture from the air going through the vents to help de-fog the inside of the windshield and windows. The A/C system acts like a big dehumidifier. Believe it or not, it really helps.

I don't honestly see you saving more on fuel than you will pay for a second (winter) belt, but to each his own.

I don't know for sure of a belt that will fit for this application. You would probably just have to take some measurements for what you think the length would have to be and try a few belts until you find one that works. With the A/C compressor sitting "on a corner" in the belt I doubt you would have to move anything, but I would have to look at it to be sure. I know that we did that on dad's Ranger when the A/C compressor died and the bearings in the pulley went bad, but his truck was offered with and without A/C so we just bought the belt for a truck without it, and changed the belt routing accordingly. To my knowledge these trucks weren't offered without A/C, at least I can't find a listing for a non-A/C belt.

Good luck!
That there is some new news to me thanks for the info on that i didnt know it worked that way but when i was told it kicks on and off like that i couldn't see a reason for it this clears up that mess for me,i will just leave it alone and get a new belt and not mess around with it,thanks for the help
 
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Old Sep 28, 2013 | 01:40 AM
  #6  
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From: Monroe City in
If you need a new belt, you can do the sd dual tensioner mod while you are at it. This requires a longer belt and also fixes a weak spot on you truck. Also, you could remove your fan in the winter to get a little more hp. But i think that would just be a pita.
 
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Old Sep 28, 2013 | 02:31 AM
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you are not really going to get any noticeable mpg gain from removing the ac compressor.

richard

edt: if you really want to just unplug the clutch... Then it freewheels.
 
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Old Sep 28, 2013 | 11:20 AM
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From: In the desert.
I never herd of that mod before,sounds interesting hahah ill have to go see if i can hunt it down hahah
 
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Old Sep 28, 2013 | 12:36 PM
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What you might save in MPG removing the compressor, you'd spend much more than that evacuating the A/C and recharging it again when it comes time to recommission it. The compressor running with the HVAC controls set to the windshield defrost position is usually a good thing. If you really don't want it, and would rather save the MPG, just disconnect the compressor electrical connector.
 
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Old Sep 30, 2013 | 03:29 PM
  #10  
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Originally Posted by madpogue
What you might save in MPG removing the compressor, you'd spend much more than that evacuating the A/C and recharging it again when it comes time to recommission it. The compressor running with the HVAC controls set to the windshield defrost position is usually a good thing. If you really don't want it, and would rather save the MPG, just disconnect the compressor electrical connector.
Ill just leave it alone since i use it in the summer,im glad for the input though, theres no better way to learn then to ask Someone once told me to put electric fans in my truck and pull the clutch fan out, can electric fans even keep up with our trucks? and if its a good thing to do is there any that will hook up easy and fit good? my clutch fan works well and does its job the way it is, this idea here is coming from a friend of mine he says that since its a diesel burning cooler than a gas that a electric fan would suit it well, my line of thinking is that it needs that clutch fan, who knows hahah
 
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Old Sep 30, 2013 | 03:52 PM
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Actually there are quite a umber of us that run with no fan at all. I ran mine that way for the better part of a year and aside from the A/C not working great until you get moving, the only problem I had with it was that it got a little warmer than I liked once while I was sitting in traffic for about 30 minutes. Now I don't haul or tow really heavy but it towed about 7k (a car on a rrailer) a few times with absolutely no issue at all. I know of a couple guys who do use e-fans as well. It's all a matter of what you use the truck for. The cooling system on these trucks is pretty oversized for the stock power levels so I think unless you're towing really heavy or do a lot of driving in traffic you should be just fine.
 
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Old Oct 2, 2013 | 09:33 AM
  #12  
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Originally Posted by DIYMechanic
Actually there are quite a umber of us that run with no fan at all. I ran mine that way for the better part of a year and aside from the A/C not working great until you get moving, the only problem I had with it was that it got a little warmer than I liked once while I was sitting in traffic for about 30 minutes. Now I don't haul or tow really heavy but it towed about 7k (a car on a rrailer) a few times with absolutely no issue at all. I know of a couple guys who do use e-fans as well. It's all a matter of what you use the truck for. The cooling system on these trucks is pretty oversized for the stock power levels so I think unless you're towing really heavy or do a lot of driving in traffic you should be just fine.
Yeah i very rarely pull just every now and then, traffic is no trouble im in a small town hahaha so im good there,ill maybe give it a try and see how i like it
 
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