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techtalk:ref:oil15 [2019/06/13 02:20] hippysmack [Testing between the oil pump and the filter] |
techtalk:ref:oil15 [2019/11/14 16:13] hippysmack |
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| (preventing excess pressure buildup to the gauge) \\ | (preventing excess pressure buildup to the gauge) \\ | ||
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_8_by_hippysmack.jpg?direct&300|}} | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_8_by_hippysmack.jpg?direct&300|}} |
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_9_by_hippysmack.jpg?direct&300|}} \\ | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_9_by_hippysmack.jpg?direct&300|}} \\ |
| ==== Testing at the rocker box ==== | ==== Testing at the rocker box ==== | ||
| Line 57: | Line 57: | ||
| Don't get scared when you look down after its hot and its on zero. ((vyper202 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1698960)) \\ | Don't get scared when you look down after its hot and its on zero. ((vyper202 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1698960)) \\ | ||
| - | * Residual crankcase pressure and working pressure from the lifters resides in the rocker boxes. | + | * Residual crankcase pressure and working pressure from the oiling tubes resides in the rocker boxes. |
| * On a cold startup, the pressure is higher due to the thicker oil present. | * On a cold startup, the pressure is higher due to the thicker oil present. | ||
| * As the engine warms up, the oil thins out and the pressure is reduced in the rocker boxes. | * As the engine warms up, the oil thins out and the pressure is reduced in the rocker boxes. | ||
| - | * Excess crankcase pressure (air and oil mist) is vented differently between pre and post 91 engines. | + | * Pulsating crankcase pressure (air and oil mist) resides over the entire breathing system as well as the rocker boxes. \\ (even though the crankcase pressure is vented through the cam cover). |
| - | * On pre 91 engines, excess crankcase pressure is vented through the cam cover. | + | * So, it is possible to notice different pressures with a pressure gauge testing from the rocker box. |
| - | * On post 91 engines, excess crankcase pressure is routed up the pushrod tubes and vented thru the rocker boxes to exit a hole in each head. | + | |
| - | * So, it is possible to notice different pressures from them with a pressure gauge testing from the rocker box. | + | |
| * However, a gauge tapped into any rocker box will most likely measure air pressure instead of oil pressure. | * However, a gauge tapped into any rocker box will most likely measure air pressure instead of oil pressure. | ||
| * As air will compress and oil will not, therefore the readings should be lower than if you were testing at the oil pressure switch. | * As air will compress and oil will not, therefore the readings should be lower than if you were testing at the oil pressure switch. | ||
| + | * Also oil ends up in the bottom of the rocker box to the head drains and air resides in the top of the box. | ||
| ===== 86 and Up models ===== | ===== 86 and Up models ===== | ||
| Line 83: | Line 82: | ||
| Below are some general drawings on hooking up the gauge. ((drawings by Hippysmack)) \\ | Below are some general drawings on hooking up the gauge. ((drawings by Hippysmack)) \\ | ||
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_5_by_hippysmack.jpg?direct&300|}} | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_5_by_hippysmack.jpg?direct&300|}} |
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_3_by_hippysmack.jpg?direct&300|}}{{:techtalk:ref:oil:installing_an_oil_gauge_4_by_hippysmack.jpg?direct&300|}} \\ | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_3_by_hippysmack.jpg?direct&300|}}{{:techtalk:ref:oil:ainstalling_an_oil_gauge_4_by_hippysmack.jpg?direct&300|}} \\ |
| ==== Testing at the rocker box ==== | ==== Testing at the rocker box ==== | ||
| Line 97: | Line 96: | ||
| * On a cold startup, the pressure is higher due to the thicker oil present. | * On a cold startup, the pressure is higher due to the thicker oil present. | ||
| * As the engine warms up, the oil thins out and the pressure is reduced in the rocker boxes. | * As the engine warms up, the oil thins out and the pressure is reduced in the rocker boxes. | ||
| - | * Excess crankcase pressure (air and oil mist) is vented differently between pre and post 91 engines. | + | * Pulsating crankcase pressure (air and oil mist) is vented differently between pre and post 91 engines. |
| * On pre 91 engines, excess crankcase pressure is vented through the cam cover. | * On pre 91 engines, excess crankcase pressure is vented through the cam cover. | ||
| * On post 91 engines, excess crankcase pressure is routed up the pushrod tubes and vented thru the rocker boxes to exit a hole in each head. | * On post 91 engines, excess crankcase pressure is routed up the pushrod tubes and vented thru the rocker boxes to exit a hole in each head. | ||
| Line 118: | Line 117: | ||
| That way, as the pressure builds, it will both enter the gauge and the flow into the engine. \\ | That way, as the pressure builds, it will both enter the gauge and the flow into the engine. \\ | ||
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_2_by_hippysmack.jpg?direct&300|}} | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_2_by_hippysmack.jpg?direct&300|}} |
| - | {{:techtalk:ref:oil:installing_an_oil_gauge_6_by_hippysmack.jpg?direct&300|}}{{:techtalk:ref:oil:installing_an_oil_gauge_7_by_hippysmack.jpg?direct&300|}} \\ | + | {{:techtalk:ref:oil:ainstalling_an_oil_gauge_6_by_hippysmack.jpg?direct&300|}}{{:techtalk:ref:oil:ainstalling_an_oil_gauge_7_by_hippysmack.jpg?direct&300|}} \\ |
| Line 182: | Line 181: | ||
| {{:techtalk:evo:oil:98_cam_chest_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | {{:techtalk:evo:oil:98_cam_chest_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | ||
| + | |||
| + | ===== At the Oil Pump ===== | ||
| + | |Parts. ((photo by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2049680))| | ||
| + | |{{:techtalk:ref:oil:oil_pressure_gauge_rig_2_by_rocketmangb.jpg?direct&300|}}| | ||
| + | |||
| + | |Hoses lengths. ((photo by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2049680&page=2))|Hook one end to the filter pad. ((photo by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2049680&page=2))|Hook the other end to the oil pump. ((photo by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2049680&page=2))| | ||
| + | |{{:techtalk:ref:oil:oil_pressure_gauge_rig_3_by_rocketmangb.jpg?direct&300|}}|{{:techtalk:ref:oil:oil_pressure_gauge_rig_10_by_rocketmangb.jpg?direct&300|}}|{{:techtalk:ref:oil:oil_pressure_gauge_rig_4_by_rocketmangb.jpg?direct&300|}}| | ||
| + | |||
| + | |Hold or mount the gauge where you want it. ((photos by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2049680&page=2))||| | ||
| + | |{{:techtalk:ref:oil:oil_pressure_gauge_rig_5_by_rocketmangb.jpg?direct&300|}}|{{:techtalk:ref:oil:oil_pressure_gauge_rig_6_by_rocketmangb.jpg?direct&300|}}|{{:techtalk:ref:oil:oil_pressure_gauge_rig_9_by_rocketmangb.jpg?direct&300|}}| | ||
| ====== IH ====== | ====== IH ====== | ||
