Type 1 Engines and 9RM Engines
 | |
| Illustration 1 | g00296342 |
Cylinder and valve location for Type 1 engines and 9RM engines (A) Exhaust valves (B) Inlet valves | |
Note: Type 1 engines can be identified in two ways. Method 1 refers to Illustration 1. When the valve cover is removed, look at the cylinder head valves. Type 1 engines have two exhaust valves in a row and two inlet valves that are in a row.
Method 2 does not require the removal of the valve cover. Refer to the inlet manifold and the exhaust manifold. Type 1 engines have two exhaust ports in a row and two inlet ports that are in a row.
Type ... Four cylinder and four stroke
Combustion system ... Direct injection
Bore ... 100 mm (3.94 inch)
Stroke ... 127 mm (5.00 inch)
Displacement ... 4 liters (243 in 3)
Compression Ratio for turbocharged engine ... 16:1
Compression Ratio for naturally aspirated engine ... 16.5:1
Number of cylinders ... 4
Arrangement of cylinders ... in-line
Firing Order ... 1, 3, 4, 2
Note: The front end of the engine is opposite the flywheel end. The left and right side of the engine are determined from the flywheel end. The Number 1 cylinder is the front cylinder.
When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... Clockwise
Type 2 Engines and 7BJ Engines
 | |
| Illustration 2 | g00296424 |
Cylinder and valve location for Type 2 engines and 7BJ engines (A) Exhaust valves (B) Inlet valves | |
Note: Type 2 engines can be identified in two ways. Method 1 refers to Illustration 2. When the valve cover is removed, look at the cylinder head valves. Type 2 engines alternate the exhaust valves and the inlet valves.
Note: Some of the Type 2 7BJ engines may look like the Type 1 engines. When the valve cover is removed, these engines may have two exhaust valves in a row and two inlet valves in a row. This is only a small percentage of the Type 2 7BJ engines.
Method 2 does not require the removal of the valve cover. Refer to the inlet manifold and the exhaust manifold. Type 2 engines alternate the exhaust ports and the inlet ports.
Type ... Four cylinder and four stroke
Combustion system ... Direct injection
Bore ... 100 mm (3.94 inch)
Stroke ... 127 mm (5.00 inch)
Displacement ... 4 liters (243 in 3)
Compression Ratio ... 17.25:1
Number of cylinders ... 4
Arrangement of cylinders ... in-line
Firing Order ... 1, 3, 4, 2
Note: The front end of the engine is opposite the flywheel end. The left and right side of the engine are determined from the flywheel end. The Number 1 cylinder is the front cylinder.
When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... Clockwise