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techtalk:ref:engmech04g [2019/11/08 01:23]
hippysmack [Test for oil cap issue when removed at idle]
techtalk:ref:engmech04g [2020/10/25 23:35] (current)
hippysmack [REF: Engine Mechanicals - Sub-04G]
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 [[:​techtalk:​menu|{{ ​ :​techtalk:​gototechnicalmenu.jpg|}}]] [[:​techtalk:​menu|{{ ​ :​techtalk:​gototechnicalmenu.jpg|}}]]
 ====== REF: Engine Mechanicals - Sub-04G ====== ====== REF: Engine Mechanicals - Sub-04G ======
 +
 +See also in the Sportsterpedia:​ \\
 +
 +  * [[techtalk:​ref:​tools173#​manometer_slack_tube_for_measuring_air_pressure|Manometer (slack tube) for Measuring Air Pressure]]
 +  * [[techtalk:​ref:​engmech04e|Building Your Own Slack Tube]]
 +  * [[techtalk:​ref:​genmsr04#​using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]]
 +  * [[techtalk:​ref:​engmech04|Evo Crankcase Pressure and Engine Breathing]]
 +  * [[techtalk:​ref:​engmech07p|Testing with a Slack Tube (Manometer) by bustert]]
 +  * [[techtalk:​ref:​genmsr04#​using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]]
 +  * [[techtalk:​ref:​oil05#​engine_and_primary_oil_system_modifications|Engine and Primary Oil System Modifications]]
 +  * [[techtalk:​ref:​oil10|Wet Sumping]]
 +  * [[techtalk:​ref:​engmech05|Breather Venting / Relocation]]
 +
 \\ \\
 ====== Slack tube testing on a 1998 1250S model  ====== ====== Slack tube testing on a 1998 1250S model  ======
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 And it was easier to spot for oil mist from the bolts which there wasn't any. \\ And it was easier to spot for oil mist from the bolts which there wasn't any. \\
  
-{{:​techtalk:​ref:​engmech:​hst_testing_reference_zero_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) ​{{:​techtalk:​evo:​engmech:​making_91-03_breather_bolt_holes_smaller_pic_5_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84))+{{:​techtalk:​evo:​engmech:​making_91-03_breather_bolt_holes_smaller_pic_5_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84))
 {{:​techtalk:​evo:​engmech:​making_91-03_breather_bolt_holes_smaller_pic_7_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84)) \\ {{:​techtalk:​evo:​engmech:​making_91-03_breather_bolt_holes_smaller_pic_7_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84)) \\
 +
 +{{:​techtalk:​ref:​engmech:​hst_testing_reference_zero_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) {{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=82)) \\
  
 {{:​techtalk:​ref:​engmech:​hst_testing_3-1_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) {{:​techtalk:​ref:​engmech:​hst_testing_3-2_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) {{:​techtalk:​ref:​engmech:​hst_testing_3-2_restriction_at_2000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) \\ {{:​techtalk:​ref:​engmech:​hst_testing_3-1_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) {{:​techtalk:​ref:​engmech:​hst_testing_3-2_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) {{:​techtalk:​ref:​engmech:​hst_testing_3-2_restriction_at_2000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=85)) \\
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 Before the new umbrellas, 3-3/4" (7-1/​2"​ WC) of vacuum was lost while removing the oil cap and the engine died when removing the cap. \\ Before the new umbrellas, 3-3/4" (7-1/​2"​ WC) of vacuum was lost while removing the oil cap and the engine died when removing the cap. \\
 The idle changed with slight movements of the cap being closer to or farther away from the oil tank neck opening. \\ The idle changed with slight movements of the cap being closer to or farther away from the oil tank neck opening. \\
 +There was oil frothing in the oil tank with the cap off at idle. The frothing got less when the cap was '​slightly'​ off. \\
 +It didn't have any affect pulling the cap at cold idle. \\
  
 {{:​techtalk:​ref:​engmech:​hst_testing_1_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) {{:​techtalk:​ref:​engmech:​hst_testing_oil_cap_removed_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) \\ {{:​techtalk:​ref:​engmech:​hst_testing_1_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) {{:​techtalk:​ref:​engmech:​hst_testing_oil_cap_removed_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=79)) \\
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 {{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=82)) ​ {{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_no_oil_cap_by_hippysmack.jpg?​direct&​300|}} ​    ​((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84)) \\ {{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=82)) ​ {{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_no_oil_cap_by_hippysmack.jpg?​direct&​300|}} ​    ​((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=84)) \\
 +
 +===== Test with air cleaner removed =====
 +The A/C was removed to see if it had any impact on crankcase pressure testing. \\
 +There was no noticeable difference with it off through the RPM range tested up to 5000. \\
 +There was also no noticeable oil mist during this period. \\
 +Condensation and light oil mist accumulation at the bolts was from original testing before replacing the umbrellas. \\
 +But none of this is was in the filter and no oil puking. \\
 +
 +{{:​techtalk:​ref:​engmech:​hst_testing_2_at_1000_rpm_no_ac_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=82))
 +{{:​techtalk:​ref:​engmech:​hst_testing_2_ac_removed_at_1000_rpm_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=82)) ​ \\
  
 \\ \\