Engine Mechanical: Other — Toyota MR2 W30 (1999-2007)

Engine Mechanical: Other Toyota MR2 W30

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

Application			In. (mm)
Crankshaft
End Play
Standard			.0016-.0094 (.040-.240)
Wear Limit			.0118 (.300)
Runout			.0012 (.030)
Main Bearings
Journal Diameter (1)
Size Mark "0"			1.8897-1.8898 (47.998-48.000)
Size Mark "1"			1.8896-1.8897 (47.996-47.998)
Size Mark "2"			1.8895-1.8896 (47.994-47.996)
Size Mark "3"			1.8894-1.8895 (47.992-47.994)
Size Mark "4"			1.8893-1.8894 (47.990-47.992)
Size Mark "5"			1.8892-1.8893 (47.988-47.990)
Journal Out-Of-Round			.0008 (.020)
Journal Taper			.0008 (.020)
Oil Clearance
Standard			.0006-.0013 (.015-.032)
Wear Limit			.0020 (.050)
Connecting Rod Bearings
Journal Diameter			1.7320-1.7323 (43.992-44.000)
Journal Out-Of-Round			.0008 (.020)
Journal Taper			.0008 (.020)
Oil Clearance
Standard			.0006-.0013 (.015-.032)
Wear Limit			.0020 (.050)
(1) Main bearing journal diameter is determined by size mark on crankshaft counterweight. (Схема №285)

(1)	Main bearing journal diameter is determined by size mark on crankshaft counterweight. (Схема №285)

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

Application		In. (mm)
Piston Pin Bushing Bore Diameter		.7879-.7882 (20.012-20.021)
Maximum Bend		.0020 Per 3.94 (.050 Per 100.0)
Maximum Twist		.0020 Per 3.94 (.050 Per 100.0)
Side Play
Standard		.0063-.0135 (.160-.342)
Wear Limit		.0135 (.342)

CONNECTING RODS

Application				In. (mm)
Pistons
Oil Clearance
Standard				.0026-.0035 (.065-.088)
Maximum				.0039 (.100)
Diameter				3.1073-3.1077 (78.925-78.935)
Pins
Diameter				.7876-.7879 (20.004-20.013)
Piston Fit				(1)
Rings
No. 1
End Gap
Standard				.0098-.0138 (.250-.350)
Wear Limit				.0413 (1.050)
Side Clearance				.0012-.0028 (.030-.070)
No. 2
End Gap
Standard				.0138-.0177 (.350-.450)
Wear Limit				.0472 (1.200)
Side Clearance				.0012-.0028 (.030-.070)
No. 3 (Oil)
End Gap
Standard				.0059-.0157 (.150-.400)
Wear Limit				.0413 (1.050)
(1) Piston pin should slide into piston using thumb pressure after piston is heated to 176-194°F (80-90°C).

(1)	Piston pin should slide into piston using thumb pressure after piston is heated to 176-194°F (80-90°C).

ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS

Application		In. (mm)
Cylinder Bore
Standard Diameter		3.1102-3.1107 (79.000-79.013)
Main Bearing Bore Inside Diameter (1)
Size Mark "0"		2.0472-2.0473 (52.000-52.003)
Size Mark "1"		2.0473-2.0474 (52.003-52.005)
Size Mark "2"		2.0474-2.0475 (52.005-52.007)
Size Mark "3"		2.0475-2.0476 (52.007-52.010)
Size Mark "4"		2.0476-2.0477 (52.010-52.012)
Size Mark "5"		2.0477-2.0478 (52.012-52.014)
Size Mark "6"		2.0478-2.0479 (52.014-52.016)
Maximum Deck Surface Warpage		.0020 (.050)
(1) Main bearing bore inside diameter is determined by size mark on cylinder block. (Схема №285)

(1)	Main bearing bore inside diameter is determined by size mark on cylinder block. (Схема №285)

CYLINDER BLOCK

Application		Specification
Intake Valves
Face Angle		44.5 Degrees
Minimum Margin		.028 In. (.70 mm)
Minimum Refinish Length		3.4783 In. (88.350 mm)
Stem Diameter		.2154-.2159 In. (5.470-5.485 mm)
Valve Stem-To-Guide Oil Clearance
Standard		.0010-.0024 (.025-.060)
Maximum		.0031 (.08)
Exhaust Valves
Face Angle		44.5 Degrees
Minimum Margin		.028 In. (.70 mm)
Minimum Refinish Length		3.4799 In. (88.390 mm)
Stem Diameter		.2152-.2157 In. (5.465-5.480 mm)
Valve Stem-To-Guide Oil Clearance
Standard		.0012-.0026 (.030-.065)
Maximum		.0031 (.08)
Valve Springs
Free Length		1.807 In. (45.9 mm)
Out-Of-Square		.063 In. (1.60 mm)
Lbs. @ In. (kg @ mm)
Pressure
Valve Closed		31.3-34.8 @ 1.323 (14.2-15.8 @ 33.60)
Valve Open		56.2-61.9 @ .969 (25.5-28.1 @ 24.6)

VALVES & VALVE SPRINGS

Application				Specification
Maximum Warpage
Cylinder Block Surface				.0020 In. (.050 mm)
Manifold Surface				.0020 In. (.050 mm)
Valve Seats
Intake & Exhaust Valves
Seat Angle				45 Degrees
Seat Width				.039-.055 In. (1.00-1.40 mm)
Valve Guides
Intake Valve
Valve Guide Cylinder Head Bore I.D.
Standard				.4049-.4057 In. (10.285-10.306 mm)
O/S				.4068-.4077 In. (10.335-10.356 mm)
Valve Guide I.D.				.2169-.2177 In. (5.510-5.530 mm)
Valve Guide Installed Height				.342-.358 In. (8.70-9.10 mm)
Exhaust Valve
Valve Guide Cylinder Head Bore I.D.
Standard				.4049-.4057 In. (10.285-10.306 mm)
O/S				.4068-.4077 In. (10.335-10.356 mm)
Valve Guide I.D.				.2169-.2177 In. (5.510-5.530 mm)
Valve Guide Installed Height				.342-.358 In. (8.70-9.10 mm)

CYLINDER HEAD

CAMSHAFT

VALVE LIFTERS