Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
|
techtalk:evo:engmech02b [2019/02/28 04:21] hippysmack [Considerations Before You Begin] |
techtalk:evo:engmech02b [2019/11/14 04:55] hippysmack [Considerations Before You Begin] |
||
|---|---|---|---|
| Line 32: | Line 32: | ||
| Notice how the left side of the pin touches the wall and the right side doesn't. \\ | Notice how the left side of the pin touches the wall and the right side doesn't. \\ | ||
| The pin diameter is split between the lifter bore and the pushrod tube drain. \\ | The pin diameter is split between the lifter bore and the pushrod tube drain. \\ | ||
| - | {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_42_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | + | |
| + | The pin sits just a few thousandths away from the lifter flat also. \\ | ||
| + | {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_42_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_52_by_hippysmack.jpg?direct&400|}} ((drawing by Hippysmack)) | ||
| Simplified drawings of the upgrade: \\ | Simplified drawings of the upgrade: \\ | ||
| Line 42: | Line 44: | ||
| {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_31_by_hippysmack.jpg?direct&400|}} {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_32_by_hippysmack.jpg?direct&400|}} ((drawings by Hippysmack)) | {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_31_by_hippysmack.jpg?direct&400|}} {{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_32_by_hippysmack.jpg?direct&400|}} ((drawings by Hippysmack)) | ||
| + | |||
| + | Factory tappet pin clearance on an 05 engine. \\ | ||
| + | {{:techtalk:evo:oil:05_tappet_screws_1_by_johnk.jpg?direct&300|}} ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=6)) | ||
| + | |||
| + | |||
| Below is an example gone wrong using a scrap piece of aluminum. \\ | Below is an example gone wrong using a scrap piece of aluminum. \\ | ||
| Line 91: | Line 98: | ||
| * The center bit doesn't have to go the entire pin length distance but far enough to allow the 3/16" bit to bite to that center. | * The center bit doesn't have to go the entire pin length distance but far enough to allow the 3/16" bit to bite to that center. | ||
| * Then the 3-1/6" bit is inserted (without the guide) to drill the back hole using the center hole you just made. | * Then the 3-1/6" bit is inserted (without the guide) to drill the back hole using the center hole you just made. | ||
| - | * Cookie cutter sleeves you'd buy at the hardware store are not always flat on the end or perfectly round. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072496)) \\ Then you have to drill a pilot hole (straight) through. If this hole is off center, the hole in the back wall will be also. \\ In going with the adage of the hole being be 1/2 the O.D., the pilot hole would around 9/32". The smaller the drill bit, the more it will flex while drilling (especially if you push on it). \\ Go slow and let the bit do the cutting. \\ A machined sleeve may work better but it would need to be a tight slip fit and not loose to let the circular motion of the drill point pull it towards the small hole. | + | * Cookie cutter sleeves you'd buy at the hardware store are not always flat on the end or perfectly round. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072496)) \\ Then you have to drill a pilot hole (straight) through. \\ If this hole is off center, the hole in the back wall will be also. \\ In going with the adage of the hole being be 1/2 the O.D., the pilot hole would around 9/32". \\ The smaller the drill bit, the more it will flex while drilling (especially if you push on it). \\ Go slow and let the bit do the cutting. \\ A machined sleeve may work better but it would need to be a tight slip fit and not loose to let the circular motion of the drill point pull it towards the small hole. |
| * **You can tap the hole first and then center drill the back wall through a bolt**. ((bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072496&page=3)) | * **You can tap the hole first and then center drill the back wall through a bolt**. ((bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072496&page=3)) | ||
| * Basically, you use the bolt as a sleeve. | * Basically, you use the bolt as a sleeve. | ||
| Line 118: | Line 125: | ||
| |{{:techtalk:ref:tools:3-16_pilot_drill_bit_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:3-16_pilot_drill_bit_2_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:tools:3-16_pilot_drill_bit_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:3-16_pilot_drill_bit_2_by_hippysmack.jpg?direct&300|}}| | ||
| - | ===== Installing the Screws Using a Hand Drill Only ===== | + | ====== Installing the Screws Using a Hand Drill Only ====== |
| First, clean the bores with solvent on a rag (Acetone used here). \\ | First, clean the bores with solvent on a rag (Acetone used here). \\ | ||
| Line 171: | Line 178: | ||
| Test fit the lifters movement up and down with the screws installed. \\ | Test fit the lifters movement up and down with the screws installed. \\ | ||
| + | With each pin in place, you should be able to push the lifter up from the bottom with your finger with no resistance from the pin. \\ | ||
| + | The you should be able to let go of the bottom of the lifter and see it glide down and stop in the lower part of the bore by itself. \\ | ||
| + | |||
| + | |{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_49_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_50_by_hippysmack.jpg?direct&300|}}| | ||
| + | |||
| + | You can use a feeler gauge between the pin and lifter flat. \\ | ||
| + | The gauge below has wide blades so the lifter was raised without the pin installed, lowered and the pin was inserted. \\ | ||
| + | In this case, start with the smallest feeler gauge and work up in size until the screw will no longer go in the hole. \\ | ||
| + | The lifter below has app .001" clearance to the pin screw. \\ | ||
| + | |||
| + | |{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_47_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_48_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_51_by_hippysmack.jpg?direct&300|}}| | ||
| + | |||
| If a screw locks up a lifter when installed, the back hole did wander away from center. \\ | If a screw locks up a lifter when installed, the back hole did wander away from center. \\ | ||
| The lifter below was moving fine with the bolt inserted and threaded to the head but not tightened. \\ | The lifter below was moving fine with the bolt inserted and threaded to the head but not tightened. \\ | ||
| Line 177: | Line 196: | ||
| |{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_36_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_37_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_36_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_lifter_pin_screw_upgrade_37_by_hippysmack.jpg?direct&300|}}| | ||
| - | |||
| ====== If the lifters lock up ====== | ====== If the lifters lock up ====== | ||
