One way is to look at the serial number. The last two digits of the serial number will usually indicate the year of manufacture. For example, if the last two digits of the serial number are 17, the engine was manufactured in 1917.
Another way to tell the year of a 455 rocket engine is to look at the part numbers. The part numbers for the different components of the engine will usually have the last two digits of the year of manufacture encoded in them. For example, if the part number for a piston is 123456789-17, the piston was manufactured in 1917.
Finally, you can also tell the year of a 455 rocket engine by looking at the design. The design of the engine will often change over time, so you can usually identify the year of manufacture by looking at the specific features of the engine. For example, the early 455 rocket engines had a single ignition system, while the later engines had a dual ignition system.
Here are some additional tips for telling the year of a 455 rocket engine:
* The early engines had a cast aluminum fuel pump, while the later engines had a forged aluminum fuel pump.
* The early engines had a solid lifter camshaft, while the later engines had a hydraulic lifter camshaft.
* The early engines had a single-plane crankshaft, while the later engines had a cross-plane crankshaft.
By using these tips, you can usually identify the year of manufacture of a 455 rocket engine.
