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Valve Springs: Inspection

  1. Check valve spring for out of square with 90° straightedge. Out of square service limit is .0625" (1.588 mm) for intake and exhaust springs.
  2. Check valve spring tension using Valve Spring Tester (J-8056). Springs must be within 10 lbs. of specified load at required height (without dampers).
    CAUTION: Install shims only if necessary. DO NOT use more than 2 shims.
  3. Check valve springs for proper installed height of 1.688-1.750" (42.88-44.45 mm).
  4. Measure from top of valve seat to top of valve spring or bottom of valve retainer. If height is excessive, install .0625" (1.587 mm) valve spring seat shim. Ensure spring height with shim does not result in installed height under minimum specification.
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