Differences

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--- techtalk:ref:engmech05 [2020/03/02 01:44]
hippysmack [Aftermarket Breather Valves]
+++ techtalk:ref:engmech05 [2020/08/14 23:28]
hippysmack [Filter on End of the Vent Line]
@@ Line 7: / Line 7: @@
   * [[techtalk:ref:engmech05b|Converting to Filtered Vents out of the Air Cleaner]]
   * [[techtalk:ref:engmech05c|Installing a Catch Can on the Breather Vent Line]]
-  * [[techtalk:ref:engmech05d|Converting Head Breathers to Cam Chest Breather]]
+  * [[techtalk:ref:engmech05d|Converting Head Breathers to Cam Chest Breather]] The Deimus Mod.
   * [[techtalk:ref:engmech05e|Adding a Vent Between the Oil Tank and the Cam Chest]]
   * [[techtalk:ref:engmech05f|Installing a Buell Rocker Box / Breather System on an Evo Sportster]]
@@ Line 147: / Line 147: @@
 However, there isn't large enough suction back on the vent line to pull debris up and into the engine. \\
+It's also safe to say that if you have an external vent line(s) attached and it never leaks even a drop, you may want to keep an eye out for worn out breather valves. \\
+When the umbrellas get old and hard, they don't flex enough to allow proper air flow around them. More vacuum is formed in the engine. \\
+The increased pressure, if vent line filter is stopped up, may overcome the engine gasket seals with oil seepage to follow. \\
+Ring flutter is normally attributed to happen around 5000-5500. Ring flutter equates to blowby which produces more positive pressure in the crankcase from above. \\
+Excess blowby can also pull oil up into the chambers on upstroke as the rings flutter. \\
+Excess blowby creates a higher density oil splash in the bottom. \\
+This equals more oil hitting the breather valves(s) to be separated and some may splash out the breather vent at high RPM when the crankcase mean pressure goes positive. \\
+Oil seepage out the vent at sustained high RPM could be enough to saturate the filter and hinder the breathability of the engine to atmosphere. \\
+Repeated runs can stop up the now saturated filter if it is left unchecked. \\
+Condensation and separated oil can also attach to the filter element and clog it up. \\
 ===== Filter Placement =====
@@ Line 192: / Line 203: @@
 When air is allowed to be drawn back into the engine, it creates a mass that must be compressed by the pistons on downstroke as it is being vented out. \\
 This robs some power and will cause the engine to work harder (creating more internal heat at higher RPM). ((Deimus of the XLFORUM http://xlforum.net/forums/showthread.php?t=67658&page=18)) \\
+Aftermarket Breather Valves for Harley's: \\
+  * Sifton Crankcase Breather ((https://www.ebay.com/itm/SIFTON-CASE-BREATHER-VENT-PCV-VALVE-HARLEY-EVO-SHOVELHEAD-PANHEAD-TWINCAM-KRANK/253213372444?epid=1665559744&hash=item3af4b1701c:g:F4cAAOSwzrxUuDhJ)) \\ This appears to be a cheaper version of the Hayden Crankvent also with an umbrella valve installed inside. \\ It is, however, a one time use part as it cannot be taken apart to replace the umbrella valve.
 Aftermarket PCV's: ((electronbee of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=reed+valve&page=10)) \\
@@ Line 206: / Line 220: @@
 |Hayden KVP38 breather valve, used with the \\ [[techtalk:ref:engmech05d|Deimus Mod]] (cam chest breather conversion). ((photo by 60Gunner of the XLFORUM http://xlforum.net/forums/showthread.php?p=5763918#post5763918))|  Hayden breather opened up. ((photos by leucadiaGuit of the XLFORUM http://xlforum.net/forums/showthread.php?t=2004869 cropped by Hippysmack))  ||
 |{{:techtalk:ref:engmech:deimus_mod_8_by_60gunner.jpg?direct&300|}}|{{:techtalk:ref:engmech:hayden_krankvent_3_by_leucadiaguit_-_cropped.jpg?direct&300|}}|{{:techtalk:ref:engmech:hayden_krankvent_2_by_leucadiaguit_-_cropped.jpg?direct&300|}}|
+|Doherty Power Vents with the line routed up then \\ down and attached to the bottom of the frame. ((photo by RIORoosen of the XLFORUM http://xlforum.net/forums/showthread.php?t=146084&page=18))|  Doherty Power Vent ((Photo by goblin_dust of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=wet+sumping&page=23))  |
+|{{:techtalk:ref:engmech:breather_mod_by_rioroosen.jpg?direct&300|}}|{{:techtalk:ref:engmech:deimus_mod_2_by_goblin_dust.jpg?direct&300|}}|
@@ Line 214: / Line 231: @@
 |{{:techtalk:ref:engmech:mercedes_benz_pcv_valve_by_electronbee.jpg?direct&300|}}|
-|Doherty Power Vents with the line routed up then \\ down and attached to the bottom of the frame. ((photo by RIORoosen of the XLFORUM http://xlforum.net/forums/showthread.php?t=146084&page=18))|  Doherty Power Vent ((Photo by goblin_dust of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=wet+sumping&page=23))  |
+====== Homemade Breather Valves ======
-|{{:techtalk:ref:engmech:breather_mod_by_rioroosen.jpg?direct&300|}}|{{:techtalk:ref:engmech:deimus_mod_2_by_goblin_dust.jpg?direct&300|}}|
+This was made by norseXL of the XLFORUM and is a direct derivative of the 86-90 breather valve setup.((http://xlforum.net/forums/showthread.php?p=5809352#post5809352)) \\
+A male threaded cap was made to screw into the female threaded body of the breather valve container as shown below. \\
+The center of the cap was drilled and tapped for a hollow (5.5mm) M10 bolt. \\
+The cam cover was also drilled and tapped for M10 threads. \\
+The brass adapter for the banjo also has M10 internal threads. \\
+The umbrella inside the body is the stock 91-03 umbrella. \\
+A 1.5mm hole was drilled into the bottom side of the body to drain any oil that makes it past the umbrella. \\
+{{:techtalk:ref:engmech:homemade_breather_vavle_1_by_norsexl.jpg?direct&300|}} {{:techtalk:ref:engmech:homemade_breather_vavle_3_by_norsexl.jpg?direct&300|}} \\
+{{:techtalk:ref:engmech:homemade_breather_vavle_4_by_norsexl.jpg?direct&300|}} {{:techtalk:ref:engmech:homemade_breather_vavle_5_by_norsexl.jpg?direct&300|}} {{:techtalk:ref:engmech:homemade_breather_vavle_2_by_norsexl.jpg?direct&300|}} \\

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