Timing Belt Service = Good time for UR Crank pulley. Got a few ???
02-16-2011, 11:15 AM
#3
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02-16-2011, 11:24 AM
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02-16-2011, 11:49 AM
#7
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you do gain hp to the wheels by reducing parasitic losses due to a decrease in rotational mass of about 8 lbs at the crank ... approx. 8-10whp depending if u go under drive at which point u will need belts or stock diameter where ur old belts will be fine ...
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02-16-2011, 04:28 PM
#8
Why not get an underdrive pulley instead? I felt my gains instantly after mine was installed.
02-16-2011, 04:46 PM
#9
I would like to chime in here, I am also planning to do my Timing Belt here soon, So I dont know anything about pulleys, and I guess would like to know what is the best option when doing a pulley? as I see someone has mentioned a underdrive and a UR? please help clear that up...and whats the best option is when doing a pulley for gains? whether it be for weight reduction or hp gains? thx in advance!
02-16-2011, 08:28 PM
#11
I Drive Like A Dick 8≈
Under drive pulley is lighter and smaller diameter therefore it spins the other pulleys less. This means that your not getting 100% out of your power steering, AC and alternator at idle (IIRC). You will get most gains from this pulley because you free up more power by spinning less weight a shorter distance.
The UR stock diameter pulley (UR is the brand name) is just a light weight pulley, if your running any sort of sound system this is the right pulley for you because your powering your alternator fully.
Underdrive = more gains w/ more stress on accessories
Stock size light weight = less gains w/ less stress on accessories
Both will be noticable gains over stock
The UR stock diameter pulley (UR is the brand name) is just a light weight pulley, if your running any sort of sound system this is the right pulley for you because your powering your alternator fully.
Underdrive = more gains w/ more stress on accessories
Stock size light weight = less gains w/ less stress on accessories
Both will be noticable gains over stock
02-16-2011, 09:25 PM
#13
Three Wheelin'
You really want people to buy that answer don't you, lol.
Changing over to the UR crank isn't the same as taking out an 8lb dumbell that was sitting in your back seat. The way you put it, it kind of sounds like that even though I'm pretty sure that isn't what you meant.
What do they say that for every 100lbs lost in a car that is 10hp gained.
The lost weight isn't the only reason for the gain, it's the smaller diameter of the pulley.
Just saying "akin to losing weight" doesn't really give any mechanical reasoning as to why it frees up 10whp.
02-16-2011, 10:42 PM
#14
Missing my
You really want people to buy that answer don't you, lol.
Changing over to the UR crank isn't the same as taking out an 8lb dumbell that was sitting in your back seat. The way you put it, it kind of sounds like that even though I'm pretty sure that isn't what you meant.
What do they say that for every 100lbs lost in a car that is 10hp gained.
The lost weight isn't the only reason for the gain, it's the smaller diameter of the pulley.
Just saying "akin to losing weight" doesn't really give any mechanical reasoning as to why it frees up 10whp.
Changing over to the UR crank isn't the same as taking out an 8lb dumbell that was sitting in your back seat. The way you put it, it kind of sounds like that even though I'm pretty sure that isn't what you meant.
What do they say that for every 100lbs lost in a car that is 10hp gained.
The lost weight isn't the only reason for the gain, it's the smaller diameter of the pulley.
Just saying "akin to losing weight" doesn't really give any mechanical reasoning as to why it frees up 10whp.
Type R had it right, OP. You're freeing up hp, not creating hp, but it feels the same. I did the underdrive pulley and, as long as I didn't leave the radio on for a long time with the car off, it did not have a noticeable effect on my AC or battery.
02-16-2011, 10:50 PM
#15
Under drive pulley is lighter and smaller diameter therefore it spins the other pulleys less. This means that your not getting 100% out of your power steering, AC and alternator at idle (IIRC). You will get most gains from this pulley because you free up more power by spinning less weight a shorter distance.
The UR stock diameter pulley (UR is the brand name) is just a light weight pulley, if your running any sort of sound system this is the right pulley for you because your powering your alternator fully.
Underdrive = more gains w/ more stress on accessories
Stock size light weight = less gains w/ less stress on accessories
Both will be noticable gains over stock
The UR stock diameter pulley (UR is the brand name) is just a light weight pulley, if your running any sort of sound system this is the right pulley for you because your powering your alternator fully.
Underdrive = more gains w/ more stress on accessories
Stock size light weight = less gains w/ less stress on accessories
Both will be noticable gains over stock
02-17-2011, 07:11 AM
#16
Senior Moderator
the AEM set doesnt get rid of the 10 lb crank pulley ... a waste of money unless u go with the crank pulley too ... and you would be resricted to the stock size only
02-17-2011, 01:19 PM
#18
Three Wheelin'
Guess ill get the obx underdrive crank pulley, i believe that is stock sized..thanks
02-17-2011, 01:28 PM
#19
I actually bught the obx racing underdrive accessory pulley kiet for our cars and the alternator on was SMALL... like you will not make enough power at idle small.
I have a volt meter on the car too and many of you may not know that with the stock battery at idle with ALL accessories going the car WITH the underdrive pulley does NOT create the same power as stock... therefore the volts drop slowly at idle until u rev it up. Now this is not a BIG deal but in the long run it kills the battery (especially an oem one) so just BEWARE guys.
I believe many people don't know or don't believe this is tru but I can assure you it is. So just make sure you know what bur doing before you go through with it.
Thankfully I did not install the underdrive alternator pulley, and just did the power steering pulley and the option underdrive pulley.
the main pulley is all u really need to touch, I did the other for looks :-) cause I am insane.
I have a volt meter on the car too and many of you may not know that with the stock battery at idle with ALL accessories going the car WITH the underdrive pulley does NOT create the same power as stock... therefore the volts drop slowly at idle until u rev it up. Now this is not a BIG deal but in the long run it kills the battery (especially an oem one) so just BEWARE guys.
I believe many people don't know or don't believe this is tru but I can assure you it is. So just make sure you know what bur doing before you go through with it.
Thankfully I did not install the underdrive alternator pulley, and just did the power steering pulley and the option underdrive pulley.
the main pulley is all u really need to touch, I did the other for looks :-) cause I am insane.
02-17-2011, 02:25 PM
#20
Senior Moderator
02-17-2011, 02:28 PM
#21
Senior Moderator
just so you know i had the ebay 50$ obx pulley on my car for 3 years running a lawn tractor battery with 240 CC amps because it was 20 lbs lighter than stock ... in florida with air on 24/7 car started everytime never had a problem
02-17-2011, 02:29 PM
#22
Three Wheelin'
Umm okay, and you are positive that since i have the other pulleys, now i have to get a stock sized underdrive crank now?
I'll look up (ur) website...thanks
I'll look up (ur) website...thanks
02-17-2011, 02:52 PM
#23
Senior Moderator
yes kinda ... under drive means its smaller and lighter ... stock size doesnt under drive its just lighter ....or return the AEM ones
02-17-2011, 03:18 PM
#24
Three Wheelin'
After being on obx and unorthodox, the ur does for sure have a stock sized pulley, the obx is unclear if it is or not. It just say replaces oem...
Huuuge price difference too, damn
Huuuge price difference too, damn
02-17-2011, 03:49 PM
#25
i will NEVER buy unorthodox. I had a pulley from them on my ford probe and this pulley has a splash guard on it held on by 4 screws. Well those screws came loose went inside my timing case and went THROUGH my damn belt!!!
now not ONLY are they overpriced but their quality isn't even OK. stay away. spend ur money, don't burn it
That company is nothing but overpriced TRASH. maybe if it said Bentley, or the pulleys were made from solid titanium, the price would be close to reasonable.
now not ONLY are they overpriced but their quality isn't even OK. stay away. spend ur money, don't burn it
That company is nothing but overpriced TRASH. maybe if it said Bentley, or the pulleys were made from solid titanium, the price would be close to reasonable.
02-17-2011, 04:54 PM
#26
Three Wheelin'
Well, i will probably be getting a stock sized pulley from someone once i find my options because i cant return the kit i got, and it already has all the belts i need as well.
02-17-2011, 08:42 PM
#27
Three Wheelin'
i will NEVER buy unorthodox. I had a pulley from them on my ford probe and this pulley has a splash guard on it held on by 4 screws. Well those screws came loose went inside my timing case and went THROUGH my damn belt!!!
now not ONLY are they overpriced but their quality isn't even OK. stay away. spend ur money, don't burn it
That company is nothing but overpriced TRASH. maybe if it said Bentley, or the pulleys were made from solid titanium, the price would be close to reasonable.
now not ONLY are they overpriced but their quality isn't even OK. stay away. spend ur money, don't burn it
That company is nothing but overpriced TRASH. maybe if it said Bentley, or the pulleys were made from solid titanium, the price would be close to reasonable.
02-18-2011, 10:33 AM
#29
Senior Moderator
ur problem wasnt UR it was that u actually owned a ford probe one then 2 thought u could modify it ...
02-18-2011, 06:20 PM
#32
Three Wheelin'
UR lists their pulleys for $1155.00 on their website. 
http://www.unorthodoxracing.com/Item...ke=27&Model=34
http://www.unorthodoxracing.com/Item...ke=27&Model=34
02-18-2011, 07:15 PM
#33
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LOL I was trying to compare prices from what UR retails these stock size crank pulleys for and the prices are, well, crazy. Obviously a typo. Just to reiterate what was already said, it comes down to personal preference. If you want a name brand that you know for certain is going to have great build quality, then you want to go with Unorthodox. Excelerate sells the underdrive and stock size on their website; i dont believe UR sells the stock size one anymore on their website. You can go with the ebay brands, and youll more than likely get a good product, since they copy the stock pulley and machine it from aluminum, and maybe cut a little more out of the middle to further reduce weight. The only downside to those are that they are all underdrive; smaller than stock. Which means you will need to purchase a new, smaller belt. That, again, is personal preference. So its up to you. If you get the UR underdrive, OBX, Bomz, or Ralco, or whatever other brands are out there you will need a new drive belt. If you buy the UR stock size, you can just use your existing belt, that is if its in good condition. I would recommend getting one of the pulleys, no matter what the brand, since you will have the stock crank pulley off to do the timing service.
02-18-2011, 08:50 PM
#34
Whats up with RDX owners?
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02-19-2011, 10:42 AM
#35
Since this discussion is going has anyone installed the complete pulley set running an amp? Have the UR under drive pulley set to install and am just curious on the drain from the audio. I believe the site claims it can still power xxxx number of watts but thought I would ask here.
02-19-2011, 12:46 PM
#36
Whats up with RDX owners?
iTrader: (9)
600W is usually the max you can run on an underdrive pulley.
02-19-2011, 05:49 PM
#37
UR lists their pulleys for $1155.00 on their website.
http://www.unorthodoxracing.com/Item...ke=27&Model=34
http://www.unorthodoxracing.com/Item...ke=27&Model=34
02-22-2011, 02:28 AM
#39
Oh, looks like they were caught red-handed. They dropped it down to $346... for one piece.
02-22-2011, 04:22 PM
#40
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that is what i did, i had to change the timing belt, and gave the mechanic the UR crank pulley light crank stock sized pulley. but after the install, i hear this metal clicking noise which i presume its from the timing belt tensioner. it was replaced once about 2 months ago, but the metal clicking noise is back. i thought it might be the belt being to tight, but the mechanic claimed its a automatic belt tensioner so no adjusting needed. sorry about thread jacking, but does anyone have any idea why the metal clicking noise?