Those who have UR Pulleys, any problems so far?
#43
Parting out 02 Type S :(
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so many problems so far for me....
i can't stay away from vtec anymore!
for real though, i have been getting more vibration but its been getting better (knock on wood). overall, i think it was well worth it. it was the last mod that made my car all the more enjoyable.
i would recommend it, but i don't think its necessary to get all three pieces. the crank was enough for me and i wanted a stock look so the other 2 would kill that.
cant wait for the chip,thats the last step i think for bolt ons except the SC!
i can't stay away from vtec anymore!
for real though, i have been getting more vibration but its been getting better (knock on wood). overall, i think it was well worth it. it was the last mod that made my car all the more enjoyable.
i would recommend it, but i don't think its necessary to get all three pieces. the crank was enough for me and i wanted a stock look so the other 2 would kill that.
cant wait for the chip,thats the last step i think for bolt ons except the SC!
#45
Team Owner
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Originally posted by Chaptorial
Thanks for the replies guys.
If you buy all three pulleys is it necessary to replace the power steering belt? If so which one should i get?
Thanks for the replies guys.
If you buy all three pulleys is it necessary to replace the power steering belt? If so which one should i get?
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I'm also curious
#46
Burning Brakes
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Originally posted by Chaptorial
Thanks for the replies guys.
If you buy all three pulleys is it necessary to replace the power steering belt? If so which one should i get?
Thanks for the replies guys.
If you buy all three pulleys is it necessary to replace the power steering belt? If so which one should i get?
#48
Race Director
Originally posted by darrinb
yea i got napa belts for mine, its gettin installed on wensday
yea i got napa belts for mine, its gettin installed on wensday
Darrin once they go in give us a review ASAP!
#50
///M POWER
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Originally posted by Chaptorial
Cool thanks guys.
Darrin once they go in give us a review ASAP!
Cool thanks guys.
Darrin once they go in give us a review ASAP!
#51
Suzuka Master
Originally posted by ChadT
Here is another quote from that article:
Seems there are possible wear issues with removing the damper. Damping torsional vibrations is important. Not necessarily something you will feel. Hard to tell what the long term effects are until someone tears down an engine that has had the damper removed for several thousand miles.
Here is another quote from that article:
Seems there are possible wear issues with removing the damper. Damping torsional vibrations is important. Not necessarily something you will feel. Hard to tell what the long term effects are until someone tears down an engine that has had the damper removed for several thousand miles.
Look, if you have an automatic, the slushbox will probably waste itself before the engine – with UR pulley installed -- does. (my opinion).
The pulley DOES NOT have anything to do with "external balancing" (static balance).
It does reduce torsional vibrations and NVH [Noise Vibration and Harshness]. Let someone else debate what was in the mind of the Honda engineer that put that on the car -- OK?
The reasons that you will find front bearings beat up on “some” engines that have had torsional dampers removed (fluid or elastomeric design) from their pulleys are: the torsion vibrations caused the crankshaft to flex MORE than it would with a "stock"/factory pulley. (Some of this "flex" results in additional bearing wear and crankshaft loading; how much is the question? )
The concept -- bearing wear from torsional vibration -- seems to be a bit obscure at first, but a twisting motion that is occurring at each bearing causes the crank bearings to "see" more side loading (even though the "initiating force is torsional (twisting) in nature. More lateral loads means more wear. Depending on the situation, the difference is minor or significant. To date, on the CLS, there haven't been any failures recorded!)
If you have a manual CL Type-S, and plan to boost the power up by quite a bit, and would be disappointed if you didn't get years and years and years of trouble free engine life from your engine, you might want to play it safe. If you have an auto ... well ...
YMMV
#52
Senior Moderator
by the time some of these people finally break down and get a set of real pulleys for their cl-s it will be a classic car.
i've had my pulleys for over 15k miles. the car runs smooth, doesn't burn oil and i don't have to tell you it runs strong. the pulleys were installed at my acura dealership by an acura technician. i even had him ask his peers if anyone thought the pulleys would hurt the car. the answer was no.
but keep being pussies, people. it doesn't bother me. i kinda like being one of the few that have a real set of pulleys.
i've had my pulleys for over 15k miles. the car runs smooth, doesn't burn oil and i don't have to tell you it runs strong. the pulleys were installed at my acura dealership by an acura technician. i even had him ask his peers if anyone thought the pulleys would hurt the car. the answer was no.
but keep being pussies, people. it doesn't bother me. i kinda like being one of the few that have a real set of pulleys.
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
#53
Spectacular Aroma About
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Originally posted by EricL
The reasons that you will find front bearings beat up on “some” engines that have had torsional dampers removed (fluid or elastomeric design) from their pulleys are: the torsion vibrations caused the crankshaft to flex MORE than it would with a "stock"/factory pulley. (Some of this "flex" results in additional bearing wear and crankshaft loading; how much is the question? )
The reasons that you will find front bearings beat up on “some” engines that have had torsional dampers removed (fluid or elastomeric design) from their pulleys are: the torsion vibrations caused the crankshaft to flex MORE than it would with a "stock"/factory pulley. (Some of this "flex" results in additional bearing wear and crankshaft loading; how much is the question? )
#55
lover and fighter
Wow...This is an old thread from when I had mine installed...
So, 7 months later and 15k miles of hard driving (52k total miles), there aren't any problems. As mattg said, car runs smoother than ever...
So, 7 months later and 15k miles of hard driving (52k total miles), there aren't any problems. As mattg said, car runs smoother than ever...
#56
Suzuka Master
Originally posted by ChadT
So is this different from what I was stating? I just don't feel that it has been proven that the vibration damper (I never called it a balancer) is unnecessary.
So is this different from what I was stating? I just don't feel that it has been proven that the vibration damper (I never called it a balancer) is unnecessary.
The very fact that it has rubber in it makes it a de facto torsional vibration damper and this type of device will act as a: NVH and "crank torsional vibration damper."
Necessary or not: IMO, depends on how long you want to keep your car and how many power making options you're adding.
#57
Spectacular Aroma About
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Originally posted by EricL
If there is a chunk of rubber on the front, it is going to damp torsional vibrations – in addition to reducing NVH. You realize that a crankshaft damper reduces NVH by “damping” torsional vibrations. When I talked with UR, they claimed the “factory” pulley was only necessary with more power. So, when is it necessary?
The very fact that it has rubber in it makes it a de facto torsional vibration damper and this type of device will act as a: NVH and "crank torsional vibration damper."
Necessary or not: IMO, depends on how long you want to keep your car and how many power making options you're adding.
If there is a chunk of rubber on the front, it is going to damp torsional vibrations – in addition to reducing NVH. You realize that a crankshaft damper reduces NVH by “damping” torsional vibrations. When I talked with UR, they claimed the “factory” pulley was only necessary with more power. So, when is it necessary?
The very fact that it has rubber in it makes it a de facto torsional vibration damper and this type of device will act as a: NVH and "crank torsional vibration damper."
Necessary or not: IMO, depends on how long you want to keep your car and how many power making options you're adding.
#58
Pro
iTrader: (2)
Originally posted by mattg
by the time some of these people finally break down and get a set of real pulleys for their cl-s it will be a classic car.
i've had my pulleys for over 15k miles. the car runs smooth, doesn't burn oil and i don't have to tell you it runs strong. the pulleys were installed at my acura dealership by an acura technician. i even had him ask his peers if anyone thought the pulleys would hurt the car. the answer was no.
but keep being pussies, people. it doesn't bother me. i kinda like being one of the few that have a real set of pulleys.
by the time some of these people finally break down and get a set of real pulleys for their cl-s it will be a classic car.
i've had my pulleys for over 15k miles. the car runs smooth, doesn't burn oil and i don't have to tell you it runs strong. the pulleys were installed at my acura dealership by an acura technician. i even had him ask his peers if anyone thought the pulleys would hurt the car. the answer was no.
but keep being pussies, people. it doesn't bother me. i kinda like being one of the few that have a real set of pulleys.
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
![Werd](https://acurazine.com/forums/images/smilies/werd.gif)
#59
Beware of leakage
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Wow, .lots of input on this issue. I myself have been looking into getting a set of UR pullies. Glad to see positive responses.
![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
#61
Suzuka Master
Probably no problem in this lifetime, and the darkside...
Originally posted by ChadT
Yes I agree. I'm all for cheap power but after doing some searching on the subject it just makes me a bit uncomfortable with it. I doubt anyone will have serious problems but torsional vibration does take place and that is the purpose of the damper.
--- MOVE TO QUOTE AREA BELOW (out of order) -- (ERICL)
If it was just on there for NVH I would get the lighter one in a heartbeat. Torsional vibration is a bit scary to me though and I do plan on keeping the car for a while.
Yes I agree. I'm all for cheap power but after doing some searching on the subject it just makes me a bit uncomfortable with it. I doubt anyone will have serious problems but torsional vibration does take place and that is the purpose of the damper.
--- MOVE TO QUOTE AREA BELOW (out of order) -- (ERICL)
If it was just on there for NVH I would get the lighter one in a heartbeat. Torsional vibration is a bit scary to me though and I do plan on keeping the car for a while.
I also feel URs resposes to questions and there FAQ is a bit lacking.
I totally agree. I talked to them via this forum, by phone (to the owner and other people), and they "glossed over" a number of issues that could have used a dose of candor.
Now for a trip to the DARK SIDE:
[SIZE=LARGE]Vibrating Crankshafts[/SIZE]
"I heard it through the grapevine, this crank won't last a long time." And for good reason. Like a lot of racers, the owner of the engine in which this crankshaft used to reside was convinced that a vibration damper serves little purpose besides plugging a very large potential oil leak in the front of the timing cover. So he found an old lightweight stock damper that should have been trashed years ago and mounted it on a brand new oval crack race engine. After only two races, a very expensive forged crankshaft parted company with itself.
Although they can't be felt or seen, crankshaft torsional vibrations are very real, destructive forces. They're also a natural by-product of the internal combustion process, so they can't be eliminated. Vibrations can, however, be controlled by - of all things - a vibration damper (also celled a harmonic balancer). But in order to function properly, a damper must have enough mass to absorb the vibrations and must be compatible with the rotating assembly.
Stock type elastomeric dampers, which have a strip of rubber between the hub and inertia ring, are tuned to specific rotating assembly mass and operating speed. Use of a stock damper is therefore ill-advised if piston, connecting rod end/or crankshaft weight differs from stock specifications or if normal engine operating speed is significantly higher than a stock engine's rpm range.
Many racers avoid compatibility problems by installing a viscous damper which does not have to be tuned to a specific rotating assembly mass or operating speed. Viscous dampers are amplitude sensitive (elastomer dampers are frequency sensitive) which means they respond to the amount of crankshaft vibration, not the frequency at which it occurs.
![](http://www.rolmfg.com/Technical/HPI/wCrank.jpg)
http://www.rolmfg.com/Technical/HPI/Cranks.htm
#65
Gimmie my points Biatch!
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Originally posted by ChadT
Yes I agree. I'm all for cheap power but after doing some searching on the subject it just makes me a bit uncomfortable with it. I doubt anyone will have serious problems but torsional vibration does take place and that is the purpose of the damper. I also feel URs resposes to questions and there FAQ is a bit lacking. If it was just on there for NVH I would get the lighter one in a heartbeat. Torsional vibration is a bit scary to me though and I do plan on keeping the car for a while.
Yes I agree. I'm all for cheap power but after doing some searching on the subject it just makes me a bit uncomfortable with it. I doubt anyone will have serious problems but torsional vibration does take place and that is the purpose of the damper. I also feel URs resposes to questions and there FAQ is a bit lacking. If it was just on there for NVH I would get the lighter one in a heartbeat. Torsional vibration is a bit scary to me though and I do plan on keeping the car for a while.
#66
Originally posted by fusionnv
It like tab or other things. Won't get cancer today. Down the line maybe u will. Same with crankshaft pulleys. Won't have problems in 10k 15k etc. Maybe when u will have problems at 50-60k. Nobody will know yet.
It like tab or other things. Won't get cancer today. Down the line maybe u will. Same with crankshaft pulleys. Won't have problems in 10k 15k etc. Maybe when u will have problems at 50-60k. Nobody will know yet.
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