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Home >> Subaru >> 1980 >> Brat DL >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engines 1600 & 1800 4 Cylinder >> Engine Specifications

Engine Specifications

GENERAL SPECIFICATIONS

Year Displ. Carburetor HP at RPM Torque (Ft.Lbs. at RPM) Compr. Ratio Bore Stroke
cu. ins. cc in. mm in. mm
1980                    
  1600 cc 97 1595 2-Bbl. 67@5200 81@2400 8.5:1(1) 3.62 92 2.36 60
  1800 cc 109 1781 2-Bbl. 71@4400 94@2400 8.7:1 3.62 92 2.64 67
(1) Federal Hatchback, Sedan DL, and Hardtop DL models 9.0:1.
VALVES

Engine &Valve Head Diam. In. (mm) Face Angle Seat Angle Seat Width In. (mm) Stem Diameter In. (mm) Stem Clearance In. (mm) Valve Lift In. (mm)
1600 cc & 1800 cc              
  Int. ..... 45° 45° .028-.051 .3130-.3136 .0014-.0026 .....
          (.7-1.3) (7.950-7.965) (.035-.065)  
  Exh. ..... 45° 45° .039-.071 .3128-.3134 .0016-.0028 .....
          (1.0-1.8) (7.945-7.960) (.040-.070)  
PISTONS, PINS, RINGS

Engine PISTONS PINS RINGS
Clearance In. (mm) Piston Fit In. (mm) Rod Fit In. (mm) Rings End Gap In. (mm) Side Clearance In. (mm)
1600 cc & 1800 cc .0004-.0016 .00004-.00067 .0002-.0016 No. 1 .0079-.0138(1) .0016-.0031(3)
  (.010-.040) (.001-.017) (.005-.040)   (.20-.35) (.04-.08)
        No. 2 .0079-.0138(1) .0012-.0028(3)
          (.20-.35) (.03-.07)
        No. 3 .0079-.0354(2) .....
          (.20-.90)  
(1) Limit.0591" (1.5 mm).
(2) Limit.07987" (2.0 mm).
(3) Limit.0059" (.15 mm).
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS

Engine MAIN BEARINGS CONNECTING ROD BEARINGS
Journal Diam. In (mm) Clearance(1) In. (mm) Thrust Bearing Crankshaft End Play(2) In. (mm) Journal Diam. In. (mm) Clearance(3) In. (mm) Side Play(4) In. (mm)
1600 cc              
  Front & Rear 1.9668-1.9673 .0004-.0014 Center .0016-.0054 1.7715-1.7720 .0008-.0028 .0028-.013
    (49.957-49.970) (.010-.035)   (.040-.137) (44.995-45.010) (.020-.070) (.07-.33)
  Center 1.9673-1.9678 .0004-.0012          
    (49.970-49.982) (.010-.030)          
1800 cc              
  Front & Rear 2.1636-2.1642 .0004-.0012 Center .0016-.0054 1.7715-1.7720 .0008-.0028 .0028-.013
    (54.995-54.970) (.010-.030)   (.040-.137) (44.995-45.010) (.020-.070) (.07-.33)
  Center 2.1636-2.1642 .0004-.0010          
    (54.995-54.970) (.010-.025)          
(1) Limit front and rear.0022" (.055 mm); Limit center.0018" (.045 mm).
(2) Limit.0118" (.30 mm).
(3) Limit.0039" (.10 mm).
(4) Limit.016" (.40 mm).
CAMSHAFT

Engine Journal Diam. In. (mm) Clearance In. (mm)(1) Lobe Lift In. (mm)
1600 cc      
  Front & Center 1.0236-1.0243 .0010-.0023 .2262
    (26.00-26.018) (.025-.059) (5.745)
1800 cc      
  Front & Center 1.2598-1.2605 .0010-.0023 .2262
    (32.000-32.018) (.025-.059) (5.745)
1600 cc & 1800 cc      
  Rear 1.4173-1.4180 .0010-.0023 .2262
    (36.000-36.018) (.025-.059) (5.745)
(1) Limit -.0039" (.1 mm).
VALVE SPRINGS

Engine Free Length In. (mm) PRESSURE Lbs. @ In. (kg @ mm)
Valve Closed Valve Open
1600 cc & 1800 cc      
  Inner 1.921 19.0-22.1@ 1.476 41.7-48.3@1.122
    (48.8) (8.6-10.0@37.5) (18.9-21.9@28.5)
1600 cc & 1800 cc      
  Outer 1.783 32.9-38.1@1.555 112.5-127.9@1.201
    (45.3) (14.9-17.3@39.5) (51.0-58.0@30.5)
TIGHTENING SPECIFICATIONS

Application Ft.Lbs. (mkg)
Cylinder Head  
  Step 1 22 (3.0)
  Step 2 43 (6.0)
  Step 3 47 (6.5)
Connecting Rod Nuts 29-31 (4.0-4.3)
Crankshaft Pulley 39-42 (5.4-5.8)
Flywheel Housing 14-20 (2.0-2.8)
Crankcase Plug 46-56 (6.3-7.7)
Crankcase Halves 10 mm Bolts 29-35 (4.0-4.8)
  8 mm Bolts 17-20 (2.3-2.7)
  6 mm Bolts 3.3-4 (.45-.55)
Intake Manifold 13-16 (1.8-2.2)
Rocker Arm Cover 2.2-2.9 (.30-.40)
Flywheel 30-33 (.42-4.6)
Rocker Arm 47 (6.5)
Oil Pan 3.3-4.0 (.45-.55)