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techtalk:evo:engmech04b [2019/07/28 02:08] hippysmack [Spring Clearance] |
techtalk:evo:engmech04b [2021/07/02 03:01] hippysmack [Check the shaft fit in the rocker cover] |
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| If problems are found, below are some examples of how those have been addressed. \\ | If problems are found, below are some examples of how those have been addressed. \\ | ||
| ====== Clearancing the Rocker Boxes ====== | ====== Clearancing the Rocker Boxes ====== | ||
| + | Rocker shaft to Rocker box clearance for all XL’s is 0.0007” to 0.0022”. ((2000 MMI Documents)) \\ | ||
| + | |||
| High lift cams or changes in the valve springs can cause contact in the rocker box. ((Scuba10jdl of the XLFORUM http://xlforum.net/forums/showthread.php?p=5601873&highlight=rocker+wear#post5601873)) \\ | High lift cams or changes in the valve springs can cause contact in the rocker box. ((Scuba10jdl of the XLFORUM http://xlforum.net/forums/showthread.php?p=5601873&highlight=rocker+wear#post5601873)) \\ | ||
| When you have high lift cams, as the rockers push your valves open they are also putting a sideways pressure on the valve stems. ((mikeLI_77 of the XLFORUM http://xlforum.net/forums/showthread.php?p=5601873&highlight=rocker+wear#post5601873)) \\ | When you have high lift cams, as the rockers push your valves open they are also putting a sideways pressure on the valve stems. ((mikeLI_77 of the XLFORUM http://xlforum.net/forums/showthread.php?p=5601873&highlight=rocker+wear#post5601873)) \\ | ||
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| * Per the specs in the FSM; \\ Shaft fit in rocker cover (loose) \\ New Install .0007” - .0022“ (.018 mm - .056 mm) \\ Wear Limits .0035” (.089 mm) \\ There was not enough clearance on one side (as the dims show in the pic below). \\ | * Per the specs in the FSM; \\ Shaft fit in rocker cover (loose) \\ New Install .0007” - .0022“ (.018 mm - .056 mm) \\ Wear Limits .0035” (.089 mm) \\ There was not enough clearance on one side (as the dims show in the pic below). \\ | ||
| - | |{{:techtalk:evo:oil:inspecting_rocker_box_shaft_bore_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:inspecting_rocker_box_shaft_bore_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:inspecting_rocker_box_shaft_bore_7.2_by_hippysmack.jpg?direct&300|}}| | + | |{{:techtalk:evo:oil:inspecting_rocker_box_shaft_bore_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:inspecting_rocker_box_shaft_bore_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:AAAinspecting_rocker_box_shaft_bore_7.2_by_hippysmack.jpg?direct&300|}}| |
| * The Jims reamer (94804-57) was used to run through the loose side to square up the hole for reaming on the other. \\ A 12-point 12 mm socket was used as a finger hold to turn the reamer in by hand. \\ (turning slowly by hand to let the reamer do the cutting) | * The Jims reamer (94804-57) was used to run through the loose side to square up the hole for reaming on the other. \\ A 12-point 12 mm socket was used as a finger hold to turn the reamer in by hand. \\ (turning slowly by hand to let the reamer do the cutting) | ||
