# UD Pulleys
**URL:** https://forums.speedlife.net/t/ud-pulleys/80585
**Category:** SON240sx Automotive
**Created:** [February 18, 2004, 7:13am UTC](https://forums.speedlife.net/t/ud-pulleys/80585 "2004-02-18T07:13:39Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@1gq2nv](https://forums.speedlife.net/u/1gq2nv)
#### Post date: [February 18, 2004, 7:13am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/1 "2004-02-18T07:13:39Z")
I’ve been looking into the benefits and drawbacks of UD Pulleys. But I’m still not sure as to wether it’s a risk worth taking on a daily driven car.
Also having continous electrical problems, which is starting to look like a grounding issue, i’m not sure wether it’s a good idea to pull away power from the alternator.
I’m still doing research on this option, but was wondering if anyone has any advice or experience with pullyes.
I’m looking at the UnOrthodox racinc UDP, if anyone has experience with them please tell us about it.
DRE
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### Author:  [@Alex](https://forums.speedlife.net/u/Alex)
#### Post date: [February 18, 2004, 7:35am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/2 "2004-02-18T07:35:12Z")
i have no first hand experience with them but i have done lots of research. generally, you will be ok to use them on a vehicle that has stock audio/electronics. As soon as you get a system or hook up other electronics you will have problems
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### Author:  [@1gq2nv](https://forums.speedlife.net/u/1gq2nv)
#### Post date: [February 18, 2004, 11:29am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/3 "2004-02-18T11:29:36Z")
^^^ see that’s what I undestood as well. I have a system, fogs and a few other gadgets going in soon, and i’m on my 4th ALT in 2 years… so I don’t know if it’s worth the risk.
DRE
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### Author:  [@Alex](https://forums.speedlife.net/u/Alex)
#### Post date: [February 18, 2004, 12:15pm UTC](https://forums.speedlife.net/t/ud-pulleys/80585/4 "2004-02-18T12:15:47Z")
i wouldnt do it then. gains from them are minimal anyways
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### Author:  [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [February 18, 2004, 1:34pm UTC](https://forums.speedlife.net/t/ud-pulleys/80585/5 "2004-02-18T13:34:14Z")
Werd, I backed out on one.
DRE fix your grounds 1st.
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### Author:  [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)
#### Post date: [February 18, 2004, 4:00pm UTC](https://forums.speedlife.net/t/ud-pulleys/80585/6 "2004-02-18T16:00:56Z")
pulleys are a waste of time. Yeah fix those grounds DRE 🙂
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### Author:  [@platinum240sx](https://forums.speedlife.net/u/platinum240sx)
#### Post date: [February 19, 2004, 4:52am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/7 "2004-02-19T04:52:05Z")
why do you say pulleys are a waste of time with no justification to your answer?
platinum240sx
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### Author:  [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)
#### Post date: [February 19, 2004, 4:58am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/8 "2004-02-19T04:58:17Z")
> [@platinum240sx](#):
>
> why do you say pulleys are a waste of time with no justification to your answer?
> platinum240sx
Your not going to notice any gaines in hp from an UD pulley. Yes there is less mass to spin. Alot of people believe that these UD pulley made there engine more free reving. Yeah it prob did, but not to any extent that they would notice. They spent 200 - 300 bucks, so they better believe it did.
Also, I have read numerous times that UD pulley’s aren’t good for engine balancing. It serves a purpose of working with the engine balancer/harmonic (I forget the name). I’m not totally sure about that subject, but it makes sense.
I’m saying bang for the buck, your better taking an extra 100 bucks and getting an SAFC II. You’ll make noticable gains there.
You take a stop watch and time 2nd or 3rd gear pulls before and after, and tell me if your time changed at all. I doubt it will.
I’m sick of reading about all these modifications that make a huge difference. I want proff, and not the companies dyno sheet.
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### Author:  [@platinum240sx](https://forums.speedlife.net/u/platinum240sx)
#### Post date: [February 19, 2004, 5:18am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/9 "2004-02-19T05:18:29Z")
thx andrew thats what i wanted lol cause im new to these and was looking at buying one or got an offer for a trade . so im gonna do a little mroe research. Also would you happen to know what the sensor is that goes into the stock intake box with wires comming out then it connect to another harness?
platinum240sx
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### Author:  [@1gq2nv](https://forums.speedlife.net/u/1gq2nv)
#### Post date: [February 19, 2004, 6:09am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/10 "2004-02-19T06:09:36Z")
^^^ Mass Air Flow Sensotr, do not bypass/ chop it.
Thanks guys, very helpfull information.
FreaK, can you be more specific about how to go abouts making this grounding kit?
DRE
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### Author:  [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [February 19, 2004, 7:11am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/11 "2004-02-19T07:11:45Z")
Take a bunch of wires connect them to the (-) terminal of your battery
and then connect the wires to random spots on your car. eg. Strut Tower
Bolt, Engine Block, Headunint Mounting Bracket, Tailight Metal Cover etc.
Oh and the wire must me at least 8 gauge…
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### Author:  [@1gq2nv](https://forums.speedlife.net/u/1gq2nv)
#### Post date: [February 19, 2004, 11:07am UTC](https://forums.speedlife.net/t/ud-pulleys/80585/12 "2004-02-19T11:07:40Z")
^^^ thanks guys.
I’ve actually been meaning to do this for a while I just never seemed to have the time / energy/ willpower to. Hopefully i’ll get to it this weekend.
DRE