Lightened underdrive crank pulleys?
#5
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I was looking at the Unorthodox Racing.
http://www.hopupracing.com/unrapoulstli2.html
http://www.hopupracing.com/unrapoulstli2.html
#7
I was looking at the Unorthodox Racing.
http://www.hopupracing.com/unrapoulstli2.html
http://www.hopupracing.com/unrapoulstli2.html
#15
I'd go with the UR pulley. I have the motostorm and I'm not too happy with it. Don't get my wrong, I have no BIG problems....it just doesn't seem to be the best quality. I've had to fight belt noise with it, and it was chewing one of my belts for a while. It had the slightest wobble to it, and I had to take it off and put it back on with an impact. Also, I'm not sure I trust the precision of the timing ring on it...
I noticed quite a bit with it, but I'm a 5spd so I can't speak for autos. It's not super amazing, and won't yield gains like a y-pipe, but you'll feel it. Plus, if you're running out of mods, this is just one more thing you can do.
I noticed quite a bit with it, but I'm a 5spd so I can't speak for autos. It's not super amazing, and won't yield gains like a y-pipe, but you'll feel it. Plus, if you're running out of mods, this is just one more thing you can do.
#17
I have a UR stock-sized pulley and noticed (read: felt) some gains, but nothing worth bragging about (the stock size is not much heavier than the UDP, and plus I didn't want to sacrifice my voltage as I have a audio system). It's very minimal and only those who know their car very well will feel it. I'm still curious to see what the actual numbers are with HP and torque gains, if any. But are the gains I felt worth it? For most people, I'd say NO. But I'm extravagant with my maxima and 1) like the car revving a bit faster (gets the car faster to that 3K mark where you really start to feel the gains from the y-pipe) and 2) like the coolness factor of having that nice shiny machined peice of art bolted to my crank. I do agree with everyone when they say that money can be better spent on other items, however.
Oh yeah...and the quality of the UR pulley is excellent, as is their customer service. I haven't had any vibration issues, and no issues with belts wearing/shredding prematurely. Of course with the stock-sized pulley I'm using OEM belts, so that may be better quality than the Gates belts the UDP guys use and thus the reason why I have't had any belt issues. I think I have around 6K miles on my pulley.
Oh yeah...and the quality of the UR pulley is excellent, as is their customer service. I haven't had any vibration issues, and no issues with belts wearing/shredding prematurely. Of course with the stock-sized pulley I'm using OEM belts, so that may be better quality than the Gates belts the UDP guys use and thus the reason why I have't had any belt issues. I think I have around 6K miles on my pulley.
Last edited by natty99; 11-28-2007 at 12:13 PM.
#18
I'd go with the UR pulley. I have the motostorm and I'm not too happy with it. Don't get my wrong, I have no BIG problems....it just doesn't seem to be the best quality. I've had to fight belt noise with it, and it was chewing one of my belts for a while. It had the slightest wobble to it, and I had to take it off and put it back on with an impact. Also, I'm not sure I trust the precision of the timing ring on it...
I noticed quite a bit with it, but I'm a 5spd so I can't speak for autos. It's not super amazing, and won't yield gains like a y-pipe, but you'll feel it. Plus, if you're running out of mods, this is just one more thing you can do.
I noticed quite a bit with it, but I'm a 5spd so I can't speak for autos. It's not super amazing, and won't yield gains like a y-pipe, but you'll feel it. Plus, if you're running out of mods, this is just one more thing you can do.
So further analysis showed a wobbling pulley, its got me concerned, and also if its the reason the screeching belt sound is being heard. If its cheap to change it, I would love to do so. Please advise. I am asking because you said something about sound and screeching with a wobbling pulley.
#19
Not to go offtopic but had a question, my car made horrible screeching sounds, so I figured it was the belts, changed both the belts, the sound still persists. So I finally figured it was the power streering belt, I sprayed water on it while on and the sound goes away, so thats definately it, now its brand new, still does that.
So further analysis showed a wobbling pulley, its got me concerned, and also if its the reason the screeching belt sound is being heard. If its cheap to change it, I would love to do so. Please advise. I am asking because you said something about sound and screeching with a wobbling pulley.
So further analysis showed a wobbling pulley, its got me concerned, and also if its the reason the screeching belt sound is being heard. If its cheap to change it, I would love to do so. Please advise. I am asking because you said something about sound and screeching with a wobbling pulley.
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