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Home >> Saab >> 1982 >> 900 S, 2D Hatchback, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 900 & 900 Turbo 4-Cylinder >> Valves >> Valve Clearance Adjustment

Valve Clearance Adjustment

  1. Check clearance with valve cover removed by rotating crankshaft so that cam lobe of valve to be measured points away from valve. Measure clearance with feeler gauge between heel of cam and follower.
  2. Clearance should be between 0.006 - 0.012" (0.15 - 0.30 mm) for intake and 0.014 - 0.020" (0.35 - 0.50 mm) for exhaust. Turbo exhaust valve clearance is 0.016 - 0.020" (0.40 - 0.50 mm).
  3. If any valve clearance is beyond limits, direct measurement of all valve clearance is required. Use tool (8391450) and a dial indicator to measure actual clearance. Record clearance readings on all valves.
  4. Adjust intake clearances if beyond 0.008 - 0.010" (0.20 - 0.25 mm) and exhaust clearances if beyond 0.016 - 0.018" (0.40 - 0.45 mm). Turbo exhaust clearance should be adjusted if beyond 0.018 - 0.020" (0.45 - 0.50 mm).
  5. Remove camshaft, followers and adjusting pallets of any valve requiring adjustment. Measure pallet thickness and add noted valve clearance to determine total clearance.
  6. Subtract proper valve clearance to find needed pallet thickness. Install new pallets. Install followers and camshaft and recheck valve clearance.
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