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HOMESERVICE MANUALSHONDA2009S2000 BASEREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALCYLINDER HEADCAMSHAFT INSPECTION
2009 Honda S2000 Base

Camshaft Inspection

2009 Honda S2000 BaseSECTION Camshaft Inspection
NOTE: Do not rotate the camshaft during inspection.
  1. Remove the rocker arm assembly (see CYLINDER HEAD INSPECTION FOR WARPAGE  ).
  2. Disassemble the rocker arm assembly (see ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY  ).
  3. Put the rocker shaft holders, camshafts, and the camshaft holders on the cylinder head, then tighten the bolts to the specified torque.
    NOTE: Apply new engine oil to the bolt threads.

    Specified Torque 

    8x 1.25 mm: 

    22 N.m (2.2 kgf.m, 16 lbf.ft) 

    Fig 1: Identifying Tightening Sequence Of Rocker Arm Assembly Bolts
    G03692345Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Seat the camshafts by pushing them toward the rear end of the cylinder head.
  5. Zero the dial indicator against the end of the camshaft, then push the camshaft back and forth and read the end play. If the end play is beyond the service limit, replace the cylinder head and recheck. If it is still beyond the service limit, replace the camshaft.

    Camshaft End Play 

    Standard (New): 0.05-0.15 mm (0.002-0.006 in.) 

    Service Limit: 0.30 mm (0.012 in.) 

    Fig 2: Measuring Camshaft End Play
    G03692346Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Remove the camshaft holders and the rocker shaft holders from the cylinder head.
  7. Lift the camshafts out of the cylinder head, wipe them clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.
  8. Clean the camshaft journal surfaces in the cylinder head, then set the camshafts back in place. Place a plastigage strip across each journal.
  9. Install the camshaft holders, then tighten the bolts to the specified torque as shown in step  3.
  10. Remove the camshaft holders. Measure the widest part of plastigage on each journal.
    • If the camshaft-to-holder clearance is within limits, go to step  12.
    • If the camshaft-to-holder clearance is beyond the service limit and the camshaft has been replaced, replace the cylinder head.
    • If the camshaft-to-holder clearance is beyond the service limit and the camshaft has not been replaced, go to step 11.

    Camshaft-to-Holder Oil Clearance 

    Standard (New): 0.060-0.099 mm (0.002-0.004 in.) 

    Service Limit: 0.15 mm (0.006 in.) 

    Fig 3: Measuring Widest Part Of Plastigage On Each Journal
    G03692347Courtesy of AMERICAN HONDA MOTOR CO., INC.
  11. Check the total runout with the camshaft supported on V-blocks.
    • If the total runout of the camshaft is within the service limit, replace the cylinder head.
    • If the total runout is beyond the service limit, replace the camshaft and recheck the camshaft-to-holder oil clearance. If the oil clearance is still out of tolerance, replace the cylinder head.

    Camshaft Total Runout 

    Standard (New): 0.03 mm (0.001 in.) max. 

    Service Limit: 0.04 mm (0.002 in.) 

    Fig 4: Checking Total Runout Of Camshaft
    G03692348Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. Measure cam lobe height.

    Cam Lobe Height Standard (New): 

    CAM LOBE HEIGHT STANDARD SPECIFICATION (2000-2003 MODELS)

      INTAKE EXHAUST
    PRIMARY 33.677 mm (1.326 in.) 33.716 mm (1.327 in.)
    MID 36.533 mm (1.438 in.) 35.928 mm (1.414 in.
    SECONDARY 33.961 mm (1.337 in.) 33.994 mm (1.338 in.)
    CAM LOBE HEIGHT STANDARD SPECIFICATION (2004-2006-08 MODELS)

      INTAKE EXHAUST
    PRIMARY 33.961 mm (1.337 in.) 33.716 mm (1.327 in.)
    MID 36.421 mm (1.434 in.) 35.660 mm (1.404 in.)
    SECONDARY 33.961 mm (1.337 in.) 33.716 mm (1.327 in.)

    PRI: PRIMARY

    MID: MID

    SEC: SECONDARY

    C/C: CAM CHAIN

    Fig 5: Measuring Cam Lobe Height
    G03692349Courtesy of AMERICAN HONDA MOTOR CO., INC.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.