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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Mechanical (H4DOTC)) >> Cylinder Head >> Inspection >> Valve Springs

Valve Springs

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  1. Check the valve springs for damage, free length, and tension. Replace the valve spring if it is not within the standard value presented in the table.
  2. To measure the squareness of the valve spring, stand the spring on a surface plate and measure its deflection at the top of spring using a try square.
SPRINGS SPECIFICATION

Free length mm (in) 47.32 (1.863)
Tension/spring height N (kgf, lb)/mm (in) Set 205 - 235 (20.9 - 24.0, 46.1 - 52.8)/36.0 (1.417)
Lift 426 - 490 (43.4 - 50.0, 95.8 - 110)/26.50 (1.041)
Squareness 2.5°, 2.1 mm (0.083 in)
Fig 1: Measuring Squareness Of Valve Spring
G03829669Courtesy of SUBARU OF AMERICA, INC.