I am trying to find out the the bore size is on a 1.9 dohc engine in a saturn sc2 1992.
easy answer is Bore: 82.0 mm (3.23"), These are the tech specs. the web site is http://en.wikipedia.org/wiki/Saturn_I4_engine Yours is the LLO engine, hope this helps. Type: Straight-4 Bore: 82.0 mm (3.23") Stroke: 90.0 mm (3.54") Displacement: 1.9 L (116 in³) Dry weight: SOHC: 196.74 lb (89.24 kg) DOHC: 220.22 lb (99.89 kg) Block alloy: Aluminum Head alloy: Aluminum Valvetrain: SOHC 8V (LK0/L24) DOHC 16V (LL0) Fuel system: LK0: TBI L24/LL0: MPFI Fuel type: Unleaded fuel, 87 octane Oil system: Pressure feed Cooling system: Watercooled Power output: LK0: 85 hp (63 kW) L24: 100 hp (75 kW) LL0: 124 hp (92 kW) Specific power: LK0: 44.73 hp/L L24: 52.63 hp/L LL0: 65.26 hp/L Torque output: LK0: 110 ft·lbf (149 N·m) L24: 114 ft·lbf (155 N·m) LL0: 122 ft·lbf (165 N·m) Compression ratio: LK0/L24: 9.3:1 LL0: 9.5:1 DOHC LL0 The DOHC cylinder head had 16 valves and was made of lost foam cast aluminum. The camshafts were held in the cylinder head with bearing caps and driven by a chain off the front crankshaft sprocket. Motion from the camshafts was transmitted to the 16 valves by direct-acting hydraulic lifters. All LLO engines used MPFI and were rated at 124 hp (92 kW) and 122 ft·lbf (165 N·m). The DOHC engine was available on the upper-level model S-series vehicles (SC, SC2, SL2, SW2). A revision of the LL0 appeared in 1999 and used a roller camshaft with hydraulic lifters and rocker arms cheers.
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