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techtalk:ref:engmech01h [2019/08/17 17:21] hippysmack |
techtalk:ref:engmech01h [2019/08/17 17:27] hippysmack [Cam Lobes] |
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| |The underside of the lifter bosses often need a little \\ grinding to keep the cam lobes from contacting. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))|Big cam lobes also may try to hit the pinion race, \\ which protrudes from the case slightly. It sticks out \\ farther on 2000-up motors. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))|If the lobe is contacting the pinion race, it's better to \\ modify the lobe than the race (this is a Red Shift 567). \\ Notice the chamfer on the lobe below. Modifying that \\ race is difficult and risky. People have done it and \\ trashed the bearing in the process. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))| | |The underside of the lifter bosses often need a little \\ grinding to keep the cam lobes from contacting. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))|Big cam lobes also may try to hit the pinion race, \\ which protrudes from the case slightly. It sticks out \\ farther on 2000-up motors. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))|If the lobe is contacting the pinion race, it's better to \\ modify the lobe than the race (this is a Red Shift 567). \\ Notice the chamfer on the lobe below. Modifying that \\ race is difficult and risky. People have done it and \\ trashed the bearing in the process. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=668404#post668404))| | ||
| |{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_1_by_aswracing.jpg?direct&300|}}|{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_2_by_aswracing.jpg?direct&300|}}|{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_3_by_aswracing.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_1_by_aswracing.jpg?direct&300|}}|{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_2_by_aswracing.jpg?direct&300|}}|{{:techtalk:ref:engmech:clearancing_the_engine_for_bigger_cams_3_by_aswracing.jpg?direct&300|}}| | ||
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| + | An example of chamfering the cam lobes was done by XLF member ~Grind~: ((photos by ~Grind~ of the XLFORUM http://xlforum.net/forums/showthread.php?t=1448694)) \\ | ||
| + | {{:techtalk:ref:engmech:clearancing_cam_lobes_1_by_grind.jpg?direct&170|}} {{:techtalk:ref:engmech:clearancing_cam_lobes_2_by_grind.jpg?direct&170|}} {{:techtalk:ref:engmech:clearancing_cam_lobes_3_by_grind.jpg?direct&170|}} \\ | ||
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| + | {{:techtalk:ref:engmech:clearancing_cam_lobes_4_by_grind.jpg?direct&170|}} {{:techtalk:ref:engmech:clearancing_cam_lobes_5_by_grind.jpg?direct&170|}} {{:techtalk:ref:engmech:clearancing_cam_lobes_6_by_grind.jpg?direct&170|}} \\ | ||
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| ==== Lifters ==== | ==== Lifters ==== | ||
