Unorthodox Racing Stock Size Pulley - If you want one ever again please read!!
07-11-2008, 12:08 PM
#82
should we expect them this coming week josh?
08-03-2008, 05:57 PM
#87
Originally Posted by TeeKaa
Do we have an update on delivery times? It has been a while since we have heard anything.
Either way, I emailed UR on Friday. They said my pulleys will ship the end of this week.
08-07-2008, 07:00 PM
#90
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Join Date: May 2008
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In another thread I was reading about these cranks (I have bought one too). There was talk of engine wear due to unbalancing the engine when removing the heavy crank... is this a concern? no one was able to verify the legitimacy of the claim.
Thanks
Thanks
08-07-2008, 08:32 PM
#91
Originally Posted by Ice-Tray
In another thread I was reading about these cranks (I have bought one too). There was talk of engine wear due to unbalancing the engine when removing the heavy crank... is this a concern? no one was able to verify the legitimacy of the claim.
Thanks
Thanks
4) "Is my crank pulley a harmonic/torsional/vibration damper or a harmonic balancer?"
People are getting their crank pulleys confused with the harmonic dampers found on some domestic V6 & V8 engines. "Harmonic Balancer" is a term used loosely in the automotive industry. Technically, this type of device does not exist. The "balancer" part comes from engines that are externally balanced and have a counterweight cast into the damper. None of the applications we offer use a counterweight as part of the pulley, as these engines are all internally balanced.
The pulleys on most of the new import and smaller domestic engines have an elastomer (rubber ring) incorporated into the pulley making them look similar to a harmonic damper. The elastomer in the OEM pulley serves as an isolator, which is there to suppress noise from the engine accessories; the A/C compressor, P/S pump, and alternator. This is what the manufacturers call NVH (Noise Vibration & Harshness) when referring to noticeable noise and vibration in the passenger compartment. It is important to realize in these applications, the elastomer is inadequate in size and durability to act as an effective torsional damper. If you look at the pulleys on some imports there is no rubber to be found at all. We have samples of these, mostly from Acura/Honda B & D Series engines, Nissan Altima, 1.8L Eclipse, 2.3L Fords, Chrysler 2.2L's, and 1.8L VW's just to mention a few. Most owners who have installed our pulleys notice the engine actually feels smoother. This is result of replacing the heavy crank pulley with our crank pulley. NVH is variable and unique to every car. NVH will increase with the installation of an aftermarket intake and/or exhaust, for example. Think of OEM intake systems in newer cars, they use baffles and resonators in the intake to quiet all the intake noise. Aftermarket intakes eliminate these resonators and create dramatic increases in engine noise from the throttle opening and closing. So to most tuners, certain types of NVH can make the driving experience more enjoyable.
The purpose of a traditional harmonic damper is to protect against crank failure from torsional movement and frequencies of high amplitude. This is not necessary in most modern engines because of the many advances in engine design and materials. Factors such as shorter stroke length, smaller displacement, piston dwell time, piston pin off-set, power output, etc., do determine when and how these harmonics and torsional movements occur. More importantly the actual tune of the engine, espcially with modified vheciles, is the biggest factor in potential engine damage. Poor tuning leads to detonation which is an engine killer that no damper can stop.
Again, there is a lot of internet hearsay about solid crank pulleys. When engine problems occur, too often people are quick to blame the pulley first, rather than taking the time to look logically into why there was a problem. We hope that after reading this you will understand our crank pulleys better.
5) "Will Unorthodox Racing lightened pulleys cause an oil pump failure?"
Urban myths have been floating around about Honda oil pumps failing by using an Unorthodox Racing crank pulley/s. The real fact is that these OEM pumps have been failing with AND WITHOUT the use of our pulleys and before our crank pulley/s were available on the market. Also note that these failures are few and far in between.
The Acura/Honda oil pumps are excellent units, but there are a number of reasons for the failures that do occur.
Most of the oil pump failures have been in Acura/Honda B series 1.6/1.8L applications, Chrsyler SRT4, Mazda 1.6/1.8L applications have seen a few failures, as well as the new Ford Focus ZETEC in race vehicles. Again, note that on all these applications the oil pump failures have occurred on engines not even using our pulley, they were using the stock crank pulley.
These pump failures can be linked to the following causes. These causes may act individually or in combination to cause the actual failures:
The gears used in many pumps including those in the Honda B series engines and Mazda Miata engines are of a low-cost powdered metal composition. The factory uses this metal because of its acceptable cost-to-strength ratio. The problem is, these parts are not always deburred properly from the factory and when pushed to their limits can and do fail.
Many times additional stress is added to the oil pump by using oil thicker than what is specified by the manufacturer. The oil pump and bearing clearances were not designed from the factory to push oil of higher viscosities. This extra stress on the gears, combined with the above mentioned poor deburring process, can attribute to oil pump failure or engine failure.
Another contributing factor to oil pump failures is the weak cast backing plate of the B16/B18 oil pumps. Simple inspection shows that when compared to an H22 oil pump, a screw is not present in a critical location of the plate in the B series pumps. Compound this with the use of a higher viscosity motor oil and poorly deburred pump components and you have the ingredients for an oil pump failure.
This issue, specific to the Mazda 1.6/1.8L engines, involves the flex of the crankshaft and the lower half of the engine due to the additional stress of a forced induction system (such as a turbo or supercharger). The additional stress produced by forced induction causes flexing of both the block and the crankshaft between the front main bearing and the oil pump. This can also contribute to oil pump failure. Early Miatas were notorious for having crankshaft problems and later models suffered from problems as power is increased significantly.
Lastly, any failure inside a motor, related to aging components or a poor engine rebuild, can cause the oil pump to fail. ANY particles passing through an oil pump design such as that used in the Honda B series engines will cause damage or failure.
Remember that oil pump failures happen regularly on engines using a factory crank pulley. To help combat these failures, a few steps should be taken to help prolong the life of your oil pump and engine:
Unless building a race motor with race clearances in mind, you should always use an oil viscosity matching, or as close to the factory recommendations as possible.
If using a factory oil pump, always have your oil pump components deburred properly. It is recommended you have a competent engine rebuilder handle this.
For those who run dedicated / extreme race vehicles we recommend using an external wet or dry sump oiling system. These systems are designed for the heavy abuse a race engine receives on the track. Remember, the stock oiling systems were designed for factory horsepower levels and can only handle a certain amount of power increase over that level.
Lastly and most obvious, have a competent, trusted machine or performance shop rebuild your precious motor. It only takes one simple mistake to turn a costly engine rebuild into a doorstop.
If you have any other questions about this subject please don't hesitate to give us a call or drop us an e-mail. We take great pride in the craftsmanship of our products and are constantly striving to provide the highest quality products available to you, our customers.
6) "Will these pulleys cause premature engine bearing wear?"
This is a fear many prospective owners have and is a valid concern since we are dealing directly with the rotating assembly. Fortunately it is another urban myth with no basis in fact. The fact is our pulleys have the opposite effect on engine bearings. The combination of tight tolerances, precise quality control, perfect balance, and dramatic weight loss versus the stock pulleys reduces stress loads on your engine, extending the service life of your engine. Engine bearing problems are purely associated to poor engine maintenance, use of heavier than factory recommended oils, improper engine building practices (which includes poor balancing), excessively revving of engines when they are cold, and owners expecting their factory oil pumps to handle engine power outputs beyond 3, 4, even 5+ times the stock power levels.
08-15-2008, 06:08 PM
#99
alright i need to PM him for one bc after reading this i am realizing i am def in need of one..i would only need to buy the 190$ (or 200$ whatever it is) bc i dont need the other one right? the other only comes with the accesory parts and is not neccassary correct?
08-16-2008, 12:18 AM
#100
Originally Posted by jaycohh
alright i need to PM him for one bc after reading this i am realizing i am def in need of one..i would only need to buy the 190$ (or 200$ whatever it is) bc i dont need the other one right? the other only comes with the accesory parts and is not neccassary correct?
Also, almost everyone should have gotten an email with the tracking #. If you didn't get one please email at sales@excelerateperformance.com so I can check to see if I missed an order.
09-04-2008, 06:44 PM
#115
10th Gear
Join Date: Aug 2007
Location: Texas
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Does anyone know where the walkthrough is? I got my pulley now Im ready to Install it :-) I sweare Ive seen a how-to before. Ive been looking for the past 30 min and can't seem to find it.
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