1. How to identify cylinder #1 on the V-engine configuration of 149?
Sometimes the cylinder number is written on the cylinder head or engine block. Identify cylinder number one when the number is not written is always difficult to choose between the first two cylinders.
If the number is not written on the engine, then check the rotation of the engine; cylinder #1 is the very one with the direction of the engine rotation.
2. What is the unique “pothead” cylinder head design in the 149 engine?
This is a unique design of the engine that is different from other Detroit diesel engine 2 stroke engines. It makes a distinction in the shape of the cylinder head and makes the engine perform better.
It is on this note that the engine is referred to as pothead design.
3. What is the benefit of the overhead camshaft system in the 149 series?
All the 149 series engines, such as the 12V149, 16V149, and 20V149, are overhead cam engines. The benefits of an overhead camshaft for these engines are;
- a. It improves the accuracy of the valve timing because it eliminates the pushrod; therefore, the precision of the valve is accurate.
- b. In the absence of pushrod, the engine enjoys the dividend of higher rpm.
- c. The design reduces mechanical complexity due to the absence of some valve train components such as pushrod, and tappets.
4. What are the major applications for this 149-engine series?
These are heavy-duty engines, so they are used where high horsepower is required. The engines are used in the generator industry, marine industry, locomotive, oil and gas, and industrial applications such as cranes.
Due to the heavy size of the engine, it was a very versatile engine that could be used in many industries.
5. iS the detroit 149 series 2 or 4-stroke engines?
149 is a 2-stroke engine, not a 4-stroke engine. It is an engine that runs with the principle of the 2-stroke engines with other Detroit diesel engines such as 53, 71, 92, and 8.2 Series.
6. What are the common potential issues related to the fuel system?
The most common potential issue of these engines is fuel system malfunction. It could be a fuel injector issue; there could be a blockage in the fuel line, or the fuel pump could sometimes malfunction. All these could affect the performance of the engine.
7. Which company made Detroit Diesel 149, Detroit Diesel or MTU?
The engine was made by Detroit diesel; in fact, all the engine series are made by Detroit diesel. But after 2000, the MTU became a subsidiary of a Detroit diesel, in which MTU also makes sales of the 149 series engines.
8. Is 149 a turbocharged engine or a naturally aspirated one?
When the engines were first made, they were all naturally aspirated engines with blowers. But later technological advancements made by Detroit Diesel made some versions of it turbocharged. Those that are turbocharged usually have the letters “T” in the name of the engine to show the engine is a turbocharger.
9. Does Detroit Diesel 149 have an inline straight configuration engine?
The answer is no. All the 149 series are V configuration engines, starting from the V8, V12, V16, and V20. All the engines are in V shape not a straight inline engine.
10. How many crankshafts does 12V 149 Detroit diesel have?
Some of these engines have 2 crankshafts. For example, the 12V carries 2 crankshafts. While some versions, such as the V8, have just one crankshaft.
But the 12V and 16V have two crankshafts bolted together.
