The Toyota 1PZ engine is a five-cylinder variant of the 1HZ engine and as such shares many of its internal components with that engine. The 1PZ engine has a cast iron cylinder block with 94 mm (3.7 in.) Cylinder bores and a 100 mm (3.94 in) piston stroke. The compression ratio ratio was 22.7: 1.
This engine has a single overhead camshaft (SOHC) cast iron cylinder head with two valves per cylinder and an indirect injection design.
The Toyota 1PZ produced 116 PS (85 kW; 114 HP) at 4,000 rpm of maximum power and 230 Nm (23.5 kg · m; 169.7 ft · lb) at 2,600 rpm of maximum torque.
The engine code breakdown is as follows:
- 1 – 1st generation engine
- PZ – Engine family
|Displacement||3.5 L, 3.469 cm3 (211.7 cubic inches)|
|Horsepower network||116 hp (85 kW; 114 hp) at 4,000 rpm|
|Torque output||230 Nm (23.5 kg · m; 169.7 ft · lb) at 2600 rpm|
|Firing order (injection)||1-2-4-5-3|
|Dimensions (L x H x W):||–|
The cylinder block is made of cast iron. The crankshaft is supported by six bearings inside the crankcase. The crankshaft bearings are made of aluminum alloy. The crankshaft is integrated with ten counterweights that are placed together with it for balance. Oil holes are built into the crankshaft to supply oil to connecting rods, bearings, etc. The crankshaft bearing cap has a ladder frame construction and is built into the crankcase.
The pistons are made of highly temperature resistant aluminum alloy. The first compression ring is made of steel and the second compression ring is made of cast iron. The oil ring is made of steel.
The cylinder bore is 94 mm (3.7 in.), The piston stroke is 100 mm (3.94 in.), And the compression ratio is 22.7: 1.
|Cylinder Block Alloy||Molten iron|
|Compression ratio:||22.7: 1|
|Cylinder bore:||94 mm (3.7 inches)|
|Piston stroke:||100 mm (3.94 inches)|
|Number of piston rings (compression / oil):||2/1|
|Number of main bearings:||6|
|Cylinder bore inner diameter:||94.000-94.030 mm (3.7001-3.7019 inches)|
|Piston skirt diameter||
93.885-94.895 mm (3.6962-3.6966 inches)
|Piston ring groove:||First||0.050-0.095 mm (0.0020-0.0037 inch)|
|Second||0.060-0.100 mm (0.0024-0.0039 inch)|
|Petroleum||0.030-0.070 mm (0.0012-0.0028 inch)|
|Piston Ring End Gap:||First||0.270-0.540 mm (0.0106-0.0212 inch)|
|Second||0.400-0.620 mm (0.0157-0.0244 inch)|
|Petroleum||0.200-0.520 mm (0.0079 – 0.0204 inch)|
|Piston pin outside diameter||29.000-29.012 mm (1.1417-1.1412 inches)|
|Piston pin hole diameter||29.008-29.020 mm (1.1420-1.1425 inches)|
|Diameter of main crankshaft journal:||66.994-67.004 mm (2.6375-2.6379 inches)|
|Crankpin diameter:||58.994-59.004 mm (2.3225-2.3230 inches)|
|Crankshaft Center Distance:||50.0 mm (1.9685 inches)|
Main bearing cap tightening procedure and torque specifications:
- Step 1: 103 Nm; 10.5 kg · m; 76 ftlb
- Step 2: Turn all screws 90 °
After securing the bearing cap bolts, make sure the crankshaft turns smoothly by hand.
Connecting rod bearing nut
- Step 1: 37 Nm; 3.75 kg · m; 27 ftlb
- Step 2: Turn all screws 90 °
Crankshaft pulley bolt
- 500 Nm; 50.0 kg · m; 369 ftlb
Flywheel (M / T) or Drive Plate (A / T) Fixing Bolts
- 127 Nm; 13.0 kg · m; 94 ftlb
The cylinder head is made of cast iron with a cross flow intake and exhaust design. The combustion chambers are of the swirl chamber type. The camshaft journal part of the cylinder head has camshaft caps made of aluminum alloy and is made of cast iron on the side of the cylinder head. The camshaft is driven by the timing belt.
The 1PZ engine is an OHV design with two valves per cylinder. The intake valves are 42.5 mm (1.6732 in) diameter and the exhaust valves are 36.0 mm (1.4173 in). Exhaust valves and …