ENGINE UNIT


  1. CONSTRUCTION


    1. Each cylinder of this engine has 2 intake valves and 2 exhaust valves. Intake and exhaust efficiency is increased due to the larger total port areas.

    2. This engine uses a valve rocker arm sub-assembly with built-in needle bearings in order to reduce the friction that occurs between the cams and the areas (valve rocker arm sub-assembly) that push the valves down, thus improving fuel economy.

    3. A valve lash adjuster assembly, which maintains a constant valve clearance of zero through the use of oil pressure and spring force, is used.

    4. The camshaft (intake camshaft) is driven by the No. 1 chain sub-assembly (No. 1 timing chain), while the No. 2 camshaft (exhaust camshaft) is driven through the gear on the camshaft (intake camshaft).

    5. The supply pump assembly is driven by the No. 2 chain sub-assembly (No. 2 timing chain).

    6. The oil pump with vacuum pump assembly is driven by the oil pump drive chain sub-assembly.

      A01QFOOC01
      *1 Camshaft (Intake Camshaft) *2 Valve Rocker Arm Sub-assembly
      *3 Valve Lash Adjuster Assembly *4 Intake Valve
      *5 Valve Spring Retainer Lock *6 Valve Spring
      *7 Valve Spring Retainer *8 Valve Stem Oil Seal
      *9 Exhaust Valve *10 No. 2 Camshaft (Exhaust Camshaft)
      *11 No. 2 Camshaft Timing Gear *12 No. 1 Chain Tensioner
      *13 No. 2 Chain Tensioner *14 No. 2 Chain Slipper
      *15 Oil Pump Drive Chain Sub-assembly *16 Oil Pump Sprocket
      *17 Crankshaft *18 No. 2 Chain Damper
      *19 No. 2 Oil Nozzle Sub-assembly *20 No. 2 Chain Sub-assembly (No. 2 Timing Chain)
      *21 Supply Pump Drive Sprocket *22 No. 1 Chain Damper
      *23 No. 1 Chain Slipper *24 Camshaft Timing Sprocket
      *25 No. 1 Chain Sub-assembly (No. 1 Timing Chain) *26 Camshaft Timing Gear