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| techtalk:ih:engmech01b [2021/10/27 03:41] – [Engine Case Numbers] hippysmack | techtalk:ih:engmech01b [2023/12/19 22:49] (current) – [1975-1985 Belly Numbers] hippysmack | ||
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| [[: | [[: | ||
| ====== IH: Engine Mechanicals - Sub-01B ====== | ====== IH: Engine Mechanicals - Sub-01B ====== | ||
| + | [[techtalk: | ||
| + | \\ | ||
| ====== Engine Case Numbers ====== | ====== Engine Case Numbers ====== | ||
| The engine VIN, also called engine number or serial number, and can be found on a pad in the " | The engine VIN, also called engine number or serial number, and can be found on a pad in the " | ||
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| ====== Belly Numbers / Line Bore Numbers ====== | ====== Belly Numbers / Line Bore Numbers ====== | ||
| - | The numbers on the bottom of the cases are commonly called the " | + | The numbers on the bottom of the cases are commonly called the " |
| If your bike has "born together" | If your bike has "born together" | ||
| These numbers have nothing to do with your gasket set or anything else. \\ | These numbers have nothing to do with your gasket set or anything else. \\ | ||
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| Each set of belly numbers is stamped on the bottom of each case half and the numbers should match if they were factory issued. \\ | Each set of belly numbers is stamped on the bottom of each case half and the numbers should match if they were factory issued. \\ | ||
| - | {{: | + | {{: |
| ===== 1975-1985 Belly Numbers ===== | ===== 1975-1985 Belly Numbers ===== | ||
| For convenience, | For convenience, | ||
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| * The model designation for 1000cc Sportsters was (7). | * The model designation for 1000cc Sportsters was (7). | ||
| - | * The right case belly number | + | * Location of numbers: |
| + | * 1975-E1984: \\ The left case is stamped on the outside primary wall. \\ The right case is stamped on the bottom | ||
| + | * L1984-1985: \\ The left case is stamped on the outside primary wall (unchanged). \\ The right case is stamped on the right side of the case (sump) below the cam cover starting with crankcase #784 044001. \\ Per TSB M-885, the locations of the right crankcase numbers were changed to aid the stamping operation. \\ | ||
| * The Julian Day starts over on every January 1st. | * The Julian Day starts over on every January 1st. | ||
| * Example January 1st = Julian Day #1. December 31 = Julian Day #365 of a non leap year, December 31 = 366 of a leap year. \\ This is verified thru Service Bulletin numbers 744 and 760. | * Example January 1st = Julian Day #1. December 31 = Julian Day #365 of a non leap year, December 31 = 366 of a leap year. \\ This is verified thru Service Bulletin numbers 744 and 760. | ||
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| |{{: | |{{: | ||
| - | | 1975-1985 belly numbers on right case bottom ((photo by paulc of the XLFORUM, labeled by Hippysmack | + | | 1975-1985 belly numbers on right case bottom ((photo by paulc of the XLFORUM, labeled by Hippysmack |
| |{{: | |{{: | ||
| + | |||
| + | ====== Case Match Numbers ====== | ||
