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can I pull the harmonic balancer off, replace it with an underdrive pulley and pick up 10-15 horsepower?

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can I pull the harmonic balancer off, replace it with an underdrive pulley and pick up 10-15 horsepower?

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first, it’s not a “harmonic balancer”.it’s a torsional damper.second, it is NOT a good idea to replace it with a solid underdrive pulley. torsional analysis of a reciprocating engine is an extremely complex, computerised study and design of a system to smoothly and safely transfer 20,000 explosions per minute into useable torque without destroying the engine or drivetrain.oh, and do it for the life of the car.without exception, every reciprocating engine, pump, or compressor can benefit from torsional damping, but getting it right is an extremely complex process, and the consequences of getting it wrong are broken crankshafts and/or ruined drivetrain components.so in summary, this is NOT a good area to try to pick up cheap horsepower on the supra unless you are prepping a full race engine and plan to rebuild the engine and drivetrain on a semi-regular basis.

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