Engine Mechanical Specifications. Chevrolet Prizm 1998

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1998 🢒 Prizm 🢒 Engine 🢒 Engine Mechanical - 1.8L 🢒 Engine Mechanical Specifications

Application	Specification
Application	Metric	English
Camshaft
Bearing Caps Oil Clearance (Standard)	0.035-0.072 mm	0.0014-0.0028 in
Bearing Caps Oil Clearance (Maximum)	0.10 mm	0.0039 in
Journal Outside Diameter (Standard)	22.949-22.965 mm	0.9035-0.9041 in
Lobe Height Exhaust (Minimum)	43.61 mm	1.7169 in
Lobe Height Exhaust (Standard)	43.761-43.861 mm	1.7229-1.7268 in
Lobe Height Intake (Minimum)	44.18 mm	1.7394 in
Lobe Height Intake (Standard)	44.333-44.433 mm	1.7454-1.7493 in
Runout (Maximum)	0.03 mm	0.0012 in
Thrust Clearance (Standard)	0.040-0.095 mm	0.0016-0.0037 in
Thrust Clearance (Maximum)	0.11 mm	0.0043 in
Connecting Rods and Bearings
Connecting Rod Bearing Clearance (Maximum)	0.080 mm	0.0031 in
Connecting Rod Bearing Clearance (Standard)	0.028-0.060 mm	0.0011-0.0024 in
Connecting Rod Bow (Maximum)	0.050 mm	0.0020 in
Connecting Rod Bushing Inside Diameter	20.012-20.021 mm	0.7878-0.7882 in
Connecting Rod Side Clearance (Maximum)	0.40 mm	0.0157 in
Connecting Rod Side Clearance (Standard)	0.160-0.342 mm	0.0063-0.0135 in
Connecting Rod Twist (Maximum)	0.05 mm	0.0039 in
Crankshaft Diameter	43.992-44.000 mm	1.7320-1.7328 in
Crankshaft Diameter Out-of-Round and Taper (Maximum)	0.02 mm	0.0004 in
Rod Bearing Thickness ("1" Stamping)	1.486-1.490 mm	0.0585-0.0587 in
Rod Bearing Thickness ("2" Stamping)	1.490-1.494 mm	0.0587-0.0588 in
Rod Bearing Thickness ("3" Stamping)	1.494-1.498 mm	0.0588-0.0590 in
Crankshaft
Journal Taper or Out-of-Round	0.02 mm	0.0008 in
Runout at Center Journal	0.03 mm	0.0012 in
Thrust Bearing Thickness	1.930-1.980 mm	0.0760-0.0780 in
Thrust Play (Maximum)	0.30 mm	0.0118 in
Thrust Play (Standard)	0.04-0.24 mm	0.0016-0.0094 in
Cylinder Head
Gasket Surface Distortion (Maximum)	0.05 mm	0.0020 in
Seating Distortion Intake and Exhaust Manifolds	0.05 mm	0.0020 in
Cylinder Block
Cylinder Bore (Standard)	79.000-79.013 mm	3.1102-3.1107 in
Cylinder Bore (Maximum)	79.02 mm	3.1110 in
Gasket Surface Distortion (Maximum)	0.05 mm	0.0020 in
Taper and Out-of-Round (Maximum)	0.10 mm	0.0039 in
Flywheel
Flywheel Face Runout	0.1 mm	0.004 in
Main Bearings
Crankshaft Journal Diameter ("0" Stamping)	47.998-48.000 mm	1.8897-1.8898 in
Crankshaft Journal Diameter ("1" Stamping)	47.996-47.998 mm	1.8896-1.8897 in
Crankshaft Journal Diameter ("2" Stamping)	47.994-47.996 mm	1.8895-1.8896 in
Crankshaft Journal Diameter ("3" Stamping)	47.992-47.994 mm	1.8894-1.8895 in
Crankshaft Journal Diameter ("4" Stamping)	47.990-47.992 mm	1.8893-1.8894 in
Crankshaft Journal Diameter ("5" Stamping)	47.988-47.990 mm	1.8892-1.8893 in
Main Bearing Cap Bore Diameter ("0" Stamping)	52.000-52.003 mm	2.0472-2.0473 in
Main Bearing Cap Bore Diameter ("1" Stamping)	52.003-52.005 mm	2.0473-2.0474 in
Main Bearing Cap Bore Diameter ("2" Stamping)	52.005-52.007 mm	2.0474-2.0475 in
Main Bearing Cap Bore Diameter ("3" Stamping)	52.007-52.010 mm	2.0475-2.0476 in
Main Bearing Cap Bore Diameter ("4" Stamping)	52.010-52.012 mm	2.0476-2.0477 in
Main Bearing Cap Bore Diameter ("5" Stamping)	52.012-52.014 mm	2.0477-2.0478 in
Main Bearing Cap Bore Diameter ("6" Stamping)	52.014-52.016 mm	2.0478-2.0479 in
Main Bearing Clearance (Maximum)	0.050 mm	0.0020 in
Main Bearing Clearance (Standard)	0.015-0.032 mm	0.0006-0.0013 in
Main Bearing Thickness ("1" Stamping)	1.994-1.997 mm	0.0785-0.0786 in
Main Bearing Thickness ("2" Stamping)	1.997-2.000 mm	0.0786-0.0787 in
Main Bearing Thickness ("3" Stamping)	2.000-2.003 mm	0.0787-0.0789 in
Main Bearing Thickness ("4" Stamping)	2.003-2.006 mm	0.0789-0.0790 in
Oil Pressure
At Idle	29 kpa, (0.3kgf/cm2)	4.2 psi or more
At 3000 r/min	294-539 kpa, (3.0-5.5 kgf/cm2)	43-79 psi
Timing Chain and Sprockets
Chain Elongation (Maximum)	122.6 mm	4.827 in
Camshaft Sprocket Diameter With Chain (Minimum)	97.4 mm	3.835 in
Crankshaft Sprocket Diameter With Chain (Minimum)	51.6 mm	2.031 in
Oil Pump
Housing-to-Oil Pump Gear Set Side Clearance (Maximum)	0.15 mm	0.0059 in
Outer Rotor-to-Inner Rotor Tip Clearance	0.35 mm	0.0138 in
Outer Rotor-to-Oil Pump Body Radial Clearance (Maximum)	0.30 mm	0.0118 in
Pistons
Diameter	78.925-78.935 mm	3.1073-3.1077 in
Pin Clearance	Interference Fit	Interference Fit
Pin Diameter	20.004-20.013 mm	0.7876-0.7879 in
Piston-to-Cylinder Bore Clearance (Standard)	0.065-0.088 mm	0.0026-0.0035 in
Piston-to-Cylinder Bore Clearance (Maximum)	0.10 mm	0.0039 in
Ring End Gap - Lower Ring (Maximum)	1.20 mm	0.0472 in
Ring End Gap - Lower Ring (Standard)	0.35-0.50 mm	0.0138-0.0197 in
Ring End Gap - Oil Ring (Maximum)	1.05 mm	0.0413 in
Ring End Gap - Oil Ring (Standard)	0.15-0.40 mm	0.0059-0.0157 in
Ring End Gap - Top Ring (Maximum)	1.05 mm	0.0413 in
Ring End Gap - Top Ring (Standard)	0.25-0.35 mm	0.0098-0.0138 in
Ring Groove Clearance - Lower Compression Ring	0.030-0.070 mm	0.0012-0.0028 in
Ring Groove Clearance - Upper Compression Ring	0.030-0.070 mm	0.0012-0.0028 in
Valves
Guide Inside Diameter	5.510-5.530 mm	0.2169-0.2177 in
Head Angles for Refinishing - Area Above Seat Contact Surface	15 Degrees
Head Angles for Refinishing - Seat Contact Surface	45 Degrees
Seating Contact Width (Standard)	1.25 mm	0.049 in
Seating Contact Width (Maximum)	0.75 mm	0.030 in
Spring Deviation	1.6 mm	0.063 in
Spring Free Length	45.90 mm	1.8070 in
Spring Preload (Standard)	14.2-15.8 kg at 33.6 mm	31.3-34.8 lb at 1.323 in
Spring Side Clearance (Maximum)	2.0 mm	0.079 in
Stem Outside Diameter - Exhaust Valves	5.465-5.480 mm	0.2152-0.2157 in
Stem Outside Diameter - Intake Valves	5.470-5.485 mm	0.2154-0.2159 in
Stem-to-Guide Clearance - Exhaust Valves (Standard)	0.030-0.065 mm	0.0012-0.0026 in
Stem-to-Guide Clearance - Exhaust Valves (Maximum)	0.10 mm	0.0039 in
Stem-to-Guide Clearance - Intake Valves (Standard)	0.025-0.060 mm	0.0010-0.0024 in
Stem-to-Guide Clearance - Intake Valves (Maximum)	0.08 mm	0.0031 in
Valve Guides
Valve Guide Bushing Bore Diameter (Standard)	10.335-10.356 mm	0.4068-0.4077 in
Valve Guide Bushing Bore Diameter (Maximum)	10.356 mm	0.4077 in
Valve Lash
Cold - Exhaust Valve	0.25-0.35 mm	0.010-0.014 in
Cold - Intake Valve	0.15-0.25 mm	0.006-0.010 in
Valve Lifters
Lifter Diameter	30.966-30.976 mm	1.2191-1.2195 in
Oil Clearance (Maximum)	0.079 mm	0.0031 in
Oil Clearance (Standard)	0.024-0.059 mm	0.0009-0.0023 in

Standard Main Bearing Selection Table

Cylinder Block Stamping + Crankshaft Journal Stamping =	0 - 2	3 - 5	6 - 8	9 - 11
Use Bearing Number	1	2	3	4