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Subaru Impreza F4-2.5L (2008)06 · Transmission and Drivetrain
06 · Transmission

Flywheel (General): Description and Operation

Make
Subaru
Model
Impreza F4-
Engine
2.5L
Year
2008
Section
Flywheel › Description and Operation › General
Transmission and DrivetrainGeneral · page 1 of 2
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Flywheel: Description and Operation
General

GENERAL

NON-TURBO MODELS

The flywheel is directly connected to the crankshaft. The mass of the flywheel absorbs the fluctuations in crankshaft rotation, and the flywheel transmits
the engine torque to the clutch disc.

TURBO MODELS

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The flywheel is of a dual mass type, which consists of a primary flywheel, damper spring, ring gear, planetary gears, and a secondary flywheel.

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The damper spring is attached to the periphery of the primary flywheel.

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The engine power flows from the primary flywheel through the damper spring, ring gear and planetary gears to the secondary flywheel, and then is
transmitted to the transmission via the clutch. Torque fluctuation in this power train is dampened by lowering the rigidity of the power train using a
two piece flywheel with a damper spring, ring gear and planetary gears in between, which helps reduce vibration and noise from the power unit.

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Parts & tools for this job For 2008 Subaru Impreza 2.5L

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