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techtalk:ih:engmech03 [2019/06/12 03:10] hippysmack [76 and earlier models] |
techtalk:ih:engmech03 [2019/12/09 16:23] hippysmack [Aftermarket Head Gaskets] |
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| |{{:techtalk:ih:engmech:1969_heads_by_monte03.jpg?direct&400|}}| | |{{:techtalk:ih:engmech:1969_heads_by_monte03.jpg?direct&400|}}| | ||
| | 1969 Iron Heads ((photo by Monte03 of the XLFORUM http://xlforum.net/forums/showthread.php?t=166440&page=6)) | | | 1969 Iron Heads ((photo by Monte03 of the XLFORUM http://xlforum.net/forums/showthread.php?t=166440&page=6)) | | ||
| + | |||
| + | ===== Aftermarket Head Gaskets ===== | ||
| + | Cometic MLS head gasket torque: | ||
| + | There are six torque values in sequence: 9-14-22-35-42-42 (all in ft/lb) \\ | ||
| + | When using aftermarket gaskets, it's important to note that the torque values in the FSM are for OEM gaskets. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5793537#post5793537)) \\ | ||
| + | The OEM gaskets offer a squeeze factor unavailable with steel gaskets. \\ | ||
| + | |||
| + | When using the MLS torque specs, you'll find they are not that different from the FSM. \\ | ||
| + | For instance, after you get to 9 ft/bs, it's about a quarter turn to 14, then about a quarter turn to 22 and so forth. \\ | ||
| + | But using the actual values instead of counting turns gets a more even pull on all sides and allows you to feel when something isn't right. \\ | ||
| ====== Valves ====== | ====== Valves ====== | ||
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| ==== 79-85 models ==== | ==== 79-85 models ==== | ||
| Check rods for up and down play in lower bearings. ((1979-1985 HD FSM (99484-85) pg 3-25)) \\ | Check rods for up and down play in lower bearings. ((1979-1985 HD FSM (99484-85) pg 3-25)) \\ | ||
| + | Measuring side shake is no longer recommended in the FSM as in above. \\ | ||
| When up and down play is detected, the lower bearing should be refitted. \\ | When up and down play is detected, the lower bearing should be refitted. \\ | ||
| \\ | \\ | ||
| [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | ||
