Many of the newer engines that have this information on engine data plates, but older two stroke engine have this information stamped directly into the block. You will find 2 numbers, the model number and the serial number.
We found an old 271 in our yard that had the serial number on the left rear section of the engine so as we have stated before, you just really never know. This intention of this article is to simply provide you with the most likely areas to find your serial number information.
We are not exactly sure what serial number or year this location changed so if it is not in one area, check the next.
Because of the relatively young age of these engines (when compared to DDC two stroke engines), the Series 50 and Series 60 are the easiest serial numbers to find of any of the Detroit Diesel engines. Almost all of these engines still have the engine data plate still on the valve covers. These are very easy to read and at the bottom of one of those data plates, you will see an Engine Number that starts with 05R (Series 50) or 06R (Series 60).
All Detroit Diesel engines have an 8 digit model broken into two equal segments of four numbers (1234-5678). Each number in the model number has a very specific purpose, providing valuable information including:
Click on the image below to download our model number guide for all Detroit Diesel two stroke engines as well as the 8.2L, Series 50 and Series 60 four stroke engine models.