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techtalk:ih:engmech09j [2021/06/10 20:02] hippysmack |
techtalk:ih:engmech09j [2023/12/27 22:37] (current) hippysmack |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| ====== IH: Engine Mechanicals - Sub-09J ====== | ====== IH: Engine Mechanicals - Sub-09J ====== | ||
| - | ====== Lower Front Motor Mount Bolt Lengths from Parts Catalogs ====== | + | ====== Lower Front Motor Mount Bolt Sizes and Lengths from Parts Catalogs ====== |
| - | Use the spacers and single bolts of the correct length. \\ This keeps the frame tubes together around the sandwiched engine cases. Very important! ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=1145463)) \\ | + | Use the spacers and single bolts of the correct length. \\ This keeps the frame tubes together around the sandwiched engine cases. Very important! ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/118347-front-motor-mounts?t=1145463)) \\ |
| **Bolt lengths from parts catalogs** (all have 3/8"x24 threads): \\ | **Bolt lengths from parts catalogs** (all have 3/8"x24 threads): \\ | ||
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| As you can see below, the lengths are far from being standard length and those lengths changed depending on what parts catalog you reference. \\ | As you can see below, the lengths are far from being standard length and those lengths changed depending on what parts catalog you reference. \\ | ||
| These are general guidelines for bolt sizes: \\ | These are general guidelines for bolt sizes: \\ | ||
| - | The front motor mount uses 3 different size bolt (lengths) for the 4 holes. ((Scuba10jdl of the XLFORUM http://xlforum.net/forums/showthread.php?t=2056655)) \\ | + | The front motor mount uses 3 different size bolt (lengths) for the 4 holes. ((Scuba10jdl of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/192227-engine-in-frame-bracketscrews-tightening-order?t=2056655)) \\ |
| The upper front and lower front holes (attaching to the frame) use the longest bolts. \\ | The upper front and lower front holes (attaching to the frame) use the longest bolts. \\ | ||
| The upper rear (through the case) uses the shortest. \\ | The upper rear (through the case) uses the shortest. \\ | ||
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| If you use any other length bolts (in the case of the bolt going into the threaded engine plate at the top rear) use the 5-3/16" long bolt. \\ | If you use any other length bolts (in the case of the bolt going into the threaded engine plate at the top rear) use the 5-3/16" long bolt. \\ | ||
| - | A longer bolt there will run into the generator mount and the lower one gets close to the oil pressure switch. ((ryder rick of the XLFORUM http://xlforum.net/forums/showthread.php?t=829078&page=2)) \\ | + | A longer bolt there will run into the generator mount and the lower one gets close to the oil pressure switch. ((ryder rick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/97896-motor-mount-bolts-need-specs/page2?t=829078&page=2)) \\ |
| * **1957-1975**: ((1953-1963 HD Sportster and KH Model Parts catalog (99451-63) pg 11)) ((1954-1976 HD Sportster XLH/XLCH-1000 parts catalog (99451-76A) pg 11)) ((1978 HD Sportster XLH/XLCH Parts catalog (99451-78A) pg 11)) | * **1957-1975**: ((1953-1963 HD Sportster and KH Model Parts catalog (99451-63) pg 11)) ((1954-1976 HD Sportster XLH/XLCH-1000 parts catalog (99451-76A) pg 11)) ((1978 HD Sportster XLH/XLCH Parts catalog (99451-78A) pg 11)) | ||
