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Message: <blockquote data-quote="evoX2" data-source="post: 2031683" data-attributes="member: 13180">8) "Are these pulleys hard to install?"In most cases if you can change your oil or do a tune-up, then you can install one of our crank pulleys. Each one of our pulley/s or sets comes with model-specific instructions that cover everything from jacking up the car to the factory torque specification on the mounting hardware. It is important for you to be aware that although the product seems simple it is critical that it be installed properly. Our instructions are not a replacement for a factory or aftermarket service manual. So if you're not sure go to a professional.An installation done by a professional mechanic should take no longer than one (1) hour for crank pulleys and under two (2) to three (3) hours for pulleys sets.9) "Do I have to change my belts when I install the pulley?"Yes. Belts must be changed with many of our different types of pulleys. When the belt sizes need to be changed it is because the pulleys are either up to 20% smaller or slightly larger than the factory pulleys. The installation instructions we supply with each kit includes the part number/s for the belt/s we have found most consistent for each model of pulley. The belt/s you will need are available from your local auto store. We would appreciate any information on belt sizing for applications that do not include specific belt sizes as it allows us to accumulate additional sizing to compare with other data we have compiled.We recommend the use of Gates belts. It is important that the belts are slightly over tightened when they are first installed as this accommodates for natural belt stretch. We do not supply the belts with our kits for three reasons. First we refuse to use inferior quality belts like those used by other pulley manufactures. For instance one manufacturer claims they use the factory OEM supplier. The problem is that manufacturers don't always use the highest quality belt because they see belts as a limited life span component that they can save money on. Second, we don't feel that our customers should have to pay NY prices (Long Island has some of the highest pricing in the country) for their belts, as most of you will be able to find the belts for a lower price in your area. Third, if an owner happens to have a rare car that needs a different belt than the ones we have found to work they would have get involved in shipping it back, exchanging the belt, and paying for additional shipping charges. Belt sizing can vary due to the OEM manufacturer's production cycle. This is due to the use of different accessories, different brackets, or a combination of both.10) "Does the anodized coating wear away?"The anodizing on our Ultra Series pulleys is purely for visual looks of the product. 6061-T6 aluminum has phenomenal weathering ability that allows it to remain beautiful even in the most severe weather environments. The anodizing will wear away on the belt sections where the belts ride on the pulleys. There is absolutely no cause for alarm.11) "Can the anodizing cause the belts to slip?"No. Even without the anodizing, as our Ultra R race pulleys have no anodizing, the belts have the same grip that they do with the stock pulleys.12) "Is there any long term maintenance required with the pulleys?"The only maintenance required is to check and replace the accessory belts at the manufacturer's specified intervals. Other than this you basically bolt on the underdrive pulleys and forget about them.13) "Will my engine RPM's change?"The pulleys have nothing to do with the transmission and the gear ratios. The pulleys only change the speed of the accessories and nothing else. The transmission and the differential, as well as tire size, control engine RPM at any given speed.14) "Can I use the underdrive pulleys if I have a high wattage stereo system?"All of the pulleys allow stereo systems of up to approximately 600 watts RMS. If the stereo system in question is above that wattage amount then the owner has two options. They can purchase our stock or oversize diameter crank pulley or we can make a custom alternator pulley, which will be smaller in diameter and will increase the voltage output.Capacitors are a smart addition as they store the power the amplifiers need for peak draw. Our stock diameter series used with capacitors allow the vehicle owner to achieve the cleanest and most powerful sound with no loss in voltage output. Another good option would be to install a second battery or batteries just for the stereo."Why doesn't Unorthodox Racing make an air conditioning pulley?"At this time we are not making a/c pulleys because of the clutch mechanism. We are, however, looking into doing them in the near future. Note that the a/c is still driven in a number of our pulley types and kits so there is no need to delete or remove the a/c. Remember, many of our pulley types and sets underdrive the a/c which can pick up a considerable amount of previously lost power.</blockquote>

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