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techtalk:ref:engmech04e [2019/10/28 03:23] hippysmack [Testing from timing plug hole (57-03)] |
techtalk:ref:engmech04e [2020/10/25 15:28] hippysmack [Testing from timing plug hole (57-03)] |
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| ====== REF: Engine Mechanicals - Sub-04E ====== | ====== REF: Engine Mechanicals - Sub-04E ====== | ||
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| - | ====== Building Your Own Slack Tube ====== | + | ====== Building Your Own Slack Tube (Manometer) ====== |
| \\ | \\ | ||
| - | ====== Testing from timing plug hole (57-03) ====== | + | See also in the Sportsterpedia: \\ |
| - | This method won't work on 04-up models as they have no timing hole plug. \\ | + | |
| - | Basically you need some clear vinyl hose and a nipple fitting to replace the timing hole plug. \\ | + | |
| - | A 3/8" flare to 1/4" FPT fitting with a 1/4" MPT to 3/8" hose barb (left pic below) can be used in place of the timing plug. \\ | + | * [[techtalk:ref:tools173#manometer_slack_tube_for_measuring_air_pressure|Manometer (slack tube) for Measuring Air Pressure]] |
| - | The 3/8"x18 pipe fitting's threads apparently work out to fit in the 5/8"x18 threaded hole. \\ | + | * [[techtalk:ref:genmsr04#using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]] |
| + | * [[techtalk:ref:engmech04g|Slack Tube Testing on a 1998 1250S Sportster]] | ||
| - | In the center and right pics below basically show a modded 3/8" hose bib with an 1/8" hose bib fitting screwed into it. \\ | + | ====== Building the Unit ====== |
| - | The hose bib was cut off, the ID drilled 11/32" and the hole threaded with a 1/8"x27 tapered pipe thread tap for the smaller fitting. \\ | + | |
| - | You can buy a 3/8" to 1/8" bushing to accomplish the same thing. \\ | + | |
| - | In this case, the taper bushing was ran it into a 5/8x18" die for a straight cut to use with a washer but the tapered fitting will do. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790)) \\ | ||
| - | The hole in a 5/16" stainless washer was enlarged to 5/8" to go up on the bushing. \\ | ||
| - | {{:techtalk:ref:engmech:timing_plug_adapter_by_aswracing.jpg?direct&300|}} ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1946516&page=4)) {{:techtalk:ref:engmech:homemade_slack_tube_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790)) {{:techtalk:ref:engmech:homemade_slack_tube_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790)) \\ | ||
| The slack tube below is made from 1/8" clear Tygon vinyl tubing and a 2x4 app 3 feet long. ((photo by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790)) \\ | The slack tube below is made from 1/8" clear Tygon vinyl tubing and a 2x4 app 3 feet long. ((photo by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790)) \\ | ||
