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techtalk:miscres:miscres51 [2021/08/09 23:16] hippysmack [How you can use casting numbers] |
techtalk:miscres:miscres51 [2022/03/14 05:52] hippysmack [How you can use casting numbers] |
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| And HD may add their own stampings also before the part is fitted to a motorcycle. \\ | And HD may add their own stampings also before the part is fitted to a motorcycle. \\ | ||
| So the casting or stamped numbers / letters / symbols etc. found in a part will denote many things other than part numbers. \\ | So the casting or stamped numbers / letters / symbols etc. found in a part will denote many things other than part numbers. \\ | ||
| + | Basically a casting number details a certain main design of a part. \\ | ||
| + | That design may require other machining (holes, slots etc) before being classified as a part to be used in production. \\ | ||
| + | The main design may simply require different finishes or colors for different models before being used in production. \\ | ||
| + | The main design may also require other parts added (bearing race, sleeve for holes etc) before being used in production. \\ | ||
| + | When the main design changed, so did the casting numbers, but not until then. However, the part number may change several times. \\ | ||
| - | Some parts will be identical when they are originally made by the vendor or whoever. \\ | + | Some parts will be identical when they are originally made by the Moco or vendor or whoever. \\ |
| Then, one step toward the part's final production state may be adding a mounting hole for one model. \\ | Then, one step toward the part's final production state may be adding a mounting hole for one model. \\ | ||
| But another model may not require one or may require the hole drilled in a different location. \\ | But another model may not require one or may require the hole drilled in a different location. \\ | ||
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| * **Example 2**: Casting numbers can be important when buying a used carb with the correct internals for your year model. \\ Keihin CV carbs have casting numbers and also the part number is on a sticker attached to the carb. \\ The stickers make it relatively easy to match the carb to what year model it was fitted to from the factory. \\ But sometimes the sticker goes missing (common after the carb sits in carb cleaner) or is unreadable. \\ Then you'll have to depend on the casting numbers and / or internal inspection. \\ However, casting numbers (only) were cast or stamped into early carburetors. \\ These markings identify type, body, jetting, motorcycle used for or modifications done to them. \\ [[techtalk:ih:carb01|Reference Links from the main IH Carburetor Page]] | * **Example 2**: Casting numbers can be important when buying a used carb with the correct internals for your year model. \\ Keihin CV carbs have casting numbers and also the part number is on a sticker attached to the carb. \\ The stickers make it relatively easy to match the carb to what year model it was fitted to from the factory. \\ But sometimes the sticker goes missing (common after the carb sits in carb cleaner) or is unreadable. \\ Then you'll have to depend on the casting numbers and / or internal inspection. \\ However, casting numbers (only) were cast or stamped into early carburetors. \\ These markings identify type, body, jetting, motorcycle used for or modifications done to them. \\ [[techtalk:ih:carb01|Reference Links from the main IH Carburetor Page]] | ||
| + | ====== Circle Date Codes ====== | ||
