Introduction
This write up will be a guide to the brave ones who decide they want to remove and install pulleys on their Subaru BRZ or Scion FR-S. The un-sprung difference in weight of the pulleys make a noticeable difference for the engine's responsiveness. It is definitely an affordable and fun mod.
Note: Since we are installing the S2 kit, we had to remove the two idlers. IF you are installing the S1 kit, you DO NOT need to remove the two idlers as they do not come in the kit.
Tools
Parts
No parts specified.
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The removal of the stock idlers is not necessary for the S1 kit. Since we are installing the S2 kit, we have to remove the stock idler pulleys.
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Carefully place everything in one place to keep the pulleys nice and neat. Depending on how you keep your hardware, its always good to organize them as well.
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Tighten and torque all the pulleys to the recommended specs.
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Note: For the crank pulley, torque to 94 ft/lbs.
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Place the vehicle in Neutral gear position and rotate the crank to make sure the belts are seated properly before turning on the vehicle.
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Reconnect the battery and start the car with the E-brake on and in neutral.
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The installation of the light weight pulleys on the motor will definitely perk them up a bit. Just be sure that everything is torqued down, that way the engine runs smooth and well.
The installation of the light weight pulleys on the motor will definitely perk them up a bit. Just be sure that everything is torqued down, that way the engine runs smooth and well.
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