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Toyota 1E Engine Specifications
The Toyota 1E (1E-L) is a 1.0 l (999 cc, 60.96 cubic inches) straight-four 4-stroke naturally aspirated gasoline engine from Toyota E-family. The 1E engine features a cast-iron block and aluminum cylinder head with the single overhead camshaft (SOHC) and three valves per cylinder (12 in total). Compression ratio rating is 9.1:1. It has a 70.5 mm (2.78 in) cylinder bore and 64.0 mm (2.52 in) piston stroke. The Toyota 1E engine has a carburetor fuel system and ignition system with a distributor. The engine produced 55.8 PS (41 kW; 55 HP) at 6,000 rpm of maximum horsepower and 75 Nm (7.6 kgm, 55.3 ft-lb) at 3,800 rpm of peak torque.
Engine code identification:
1 – 1-st generation engine
E – Engine family
| GENERAL TECHNICAL DATA |
Engine model ...................... 1E, 1E-L
Cylinder layout ...................... Four stroke, Inline-4
(Straight-4)
Fuel type ...................... Gasoline (petrol)
Year of production ...................... No data available
Total displacement ...................... 1.0 L, 999 cm3 (60.96 cubic
inches)
Fuel system ...................... Carburetor (Type K)
Power adder ...................... None
Maximum power ...................... 55.8 PS (41 kW; 55 HP) at 6,000 rpm
Maximum torque ...................... 75 Nm (7.6 kgm, 55.3 ft-lb) at
3,800 rpm
Firing order ...................... 1-3-4-2
Dimensions (L x W x H) ...................... No data available
Weight ...................... No data available
| CYLINDER BLOCK |
The Toyota 1E has a cast-iron cylinder block with five bearing support
system. It has a 70.5 mm (2.78 in) cylinder bore and 64.0 mm (2.52 in)
piston stroke. Compression ratio rating is 9.1:1.
Cylinder block alloy ...................... Cast-iron
Compression ratio ...................... 9.1:1
Cylinder bore ...................... 70.5 mm (2.78 in)
Piston stroke ...................... 64.0 mm (2.52 in)
Number of piston rings (compression / oil) ...................... 2 / 1
Number of main bearings ...................... 5
Cylinder inner diameter (standard) ...................... 70.500 mm
(2.7756 in)
Piston skirt diameter (standard) ...................... 70.410-70.440
mm (2.772-2.7732 in)
Piston pin outer diameter ...................... No data available
Piston ring side clearance ...................... Top
...................... 0.040-0.080 mm (0.0016-0.0031 in)
Second ...................... 0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap ...................... Top ......................
0.260-0.490 mm (0.0102-0.0193 in)
Second ...................... 0.150-0.430 mm (0.0059-0.0169 in)
Oil ...................... 0.200-0.830 mm (0.0079-0.0327 in)
Crankshaft journal diameter ...................... 47.000 mm (1.8504
in)
Crankpin diameter ...................... 40.000 mm (1.5748 in)
Main bearing cap bolts tightening procedure and torque specs:
57 Nm, 5.8 kgm; 42 ft-lb)
After securing bearing cap bolts, make sure crankshaft turns smoothly by
hand.
Connecting rod bearing bolts
39 Nm, 4.0 kgm; 29 ft-lb)
| CYLINDER HEAD |
The cylinder head is made of aluminum alloy which gives it good cooling
efficiency. The engine has single overhead camshaft, that is driven by a
timing belt and three valves per cylinder (12 valves in total). The 1E
engine used special valve shims to adjust the valve clearance.
Valve Arrangement ...................... SOHC, belt drive
Valves ...................... 12 (3 valves per cylinder)
Valve head diameter ...................... INTAKE
...................... No data available
EXHAUST ...................... No data available
Valve length ...................... INTAKE (First)
...................... 92.26 mm (3.6323 in)
INTAKE (Second) ...................... 98.50 mm (3.8779 in)
EXHAUST ...................... 92.26 mm (3.6323 in)
Valve stem diameter ...................... INTAKE
...................... 5.970-5.985 mm (0.2350-0.2356 in)
EXHAUST ...................... 5.965-5.980 mm (0.2348-0.2354 in.)
Valve spring free length ...................... 41.52 mm (1.6346 in)
Camshaft cam height ...................... INTAKE (First)
...................... 35.87-35.97 mm (1.4122-1.4161 in)
INTAKE (Second) ...................... 35.38-35.48 mm (1.3929-1.3968 in)
EXHAUST ...................... 35.83-35.93 mm (1.4106-1.4146 in)
Outer camshaft journal diameter ...................... 26.979-26.995 mm
(1.0622-1.0628 in)
Head tightening procedure and torque specs:
Step 1: 29 Nm, 3.0 kgm; 21.4 ft-lb
Step 1: 49 Nm, 5.0 kgm; 36.16 ft-lb
Step 2: Turn all bolts 90°
| MAINTENANCE DATA |
Valve clearance
Intake valve ...................... 0.20 mm (0.008 in)
Exhaust valve ...................... 0.20 mm (0.08 in)
Compression pressure
Standard ...................... 12.0 kg/m2 / 200 rpm
Minimun ...................... 10.0 kg/m2 / 200 rpm
Compression differential limit between cylinders ......................
1.0 kg/m2 / 200 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles) ...................... up to
0.5 (1 qt. per 1200 miles)
Recommended engine oil ...................... 5W-20, 5W-30, 10W-30
Oil type API ...................... SE, SF or SG
Engine oil capacity (Refill capacity) ...................... With filter
change 3.2 l l
Without filter change 2.9 l
Oil change interval, km (miles) ...................... 10,000 (6,000)
Ignition system
Spark plug ...................... NGK: BPR6EY-11
DENSO: W20EXR-U11
Spark plug gap ...................... 0.8 mm (0.0315 in)
| VEHICLE APPLICATIONS |
Model ...................... Years Produced
Toyota Starlet (P70 EP70, EP80) ...................... No data available
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