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techtalk:ref:carb06 [2021/01/22 04:27]
– [Big Sucker w/External Breather] hippysmack |
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techtalk:ref:carb06 [2024/01/11 23:22] (current)
– hippysmack |
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| See also [[techtalk:ref:engmech05#breather_vent_relocation|Breather Vent Relocation]] in the REF section of the Sportsterpedia. \\ |
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Some air cleaners are not set up to allow for the breather bolts into them and are only held on by the small front bolts. ((Shu of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/44522-show-me-your-non-stock-breather-systems/page11?t=146084&page=11)) \\ |
| For these breathers you would need to get a head breather kit and carb support bracket. \\ |
| The breather kit routes the head vents to the ground (or atmosphere) while the carb support bracket keeps the carb in the intake. \\ |
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Below is a breather vent re-direction on an EFI model. ((jcmellis of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/120790-oil-drip-from-air-cleaner-fixed?t=1179974)) \\ |
| A small amount of crankcase oil was dripping into the A/C on a Figure Machine/Engineering air cleaner assembly. \\ |
| This air cleaner uses the stock Harley-Davidson breather tubes. \\ |
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| Once trimmed to size, the hoses are positioned at the mouth of the throttle body. \\ |
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{{:techtalk:ref:carb:hd_breather_mod_1_by_jcmellis.jpg?direct&300|}} ((photo by jcmellis of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/120790-oil-drip-from-air-cleaner-fixed?t=1179974)) {{:techtalk:ref:carb:hd_breather_mod_2_by_jcmellis.jpg?direct&300|}} ((photo by jcmellis of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/120790-oil-drip-from-air-cleaner-fixed?t=1179974)) |
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| ===== Big Sucker w/External Breather ===== |
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| {{:techtalk:ref:carb:bigsucker-extbreathermod-dodgenbullets.jpg?600|}} |
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| **How to modify the Big Sucker to vent to the atmosphere.**\\ |
httphttps://www.xlforum.net/forumsforum/showthread.php?t=34956 sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/21180-poll-big-sucker-owners-plz-respond (There are a number of mods listed in this thread)\\ |
| Commentary Posted by Dodgenbullets (See Post #17 & #19)\\ |
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| ====== Running the Breather Hoses (91 and UP) ====== |
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| ===== Vent Line Routing ===== |
| ==== Above vs Below the Head Vents ==== |
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| There has been debatable ways to route the vent lines off the heads when doing air cleaner mods. \\ |
| However, exact line routing comes down to function over fashion. \\ |
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| Vent lines mounted low allows oil to leave the heads. \\ |
{{:techtalk:ref:carb:breather_lines_mounted_low_by_ixl2relax.jpg?direct&300|}} ((photo by IXL2Relax of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/111555-air-cleaner-porn/page46?t=1051311&page=46)) {{:techtalk:ref:carb:breather_lines_mounted_low_by_beuz.jpg?direct&300|}} ((photo by beuz of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-styles/chopper-bobber-talk/7694-sporty-bobber-pictures/page582?t=11697&page=582)) |
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| Vent lines mounted high tend to promote a mixture of oil and condensation settling near the head connection of the hose. \\ |
{{techtalk:ref:engmech:kuryakyn_breather_bolts_1_by_scar55.jpg?direct&300|}} ((photo by Scar55 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/157991-ooozzz-running-out-of-my-crank-case-breather-hose?t=1690623)) {{techtalk:ref:engmech:kuryakyn_breather_bolts_2_by_scar55.jpg?direct&300|}} ((photo by Scar55 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/157991-ooozzz-running-out-of-my-crank-case-breather-hose?t=1690623)) |
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| ====== Breather Bolts ====== |
| Kuryakyn banjo bolts: \\ |
{{techtalk:ref:engmech:kuryakyn_banjo_breather_bolts_1_by_mick42.jpg?direct&300|}} ((photo by mick42 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/197402-pcv-valve-in-sporty-rocker-covers/page2?t=2074032&page=2)) {{techtalk:ref:engmech:kuryakyn_banjo_breather_bolts_2_by_mick42.jpg?direct&300|}} ((photo by mick42 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/197402-pcv-valve-in-sporty-rocker-covers/page2?t=2074032&page=2)) |
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| ====== Pics of Air Cleaners ====== |
| Caddy Ornament. ((photos by Lone Rider of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-accessories/195309-those-little-ways-to-personalize-your-bike?p=5712103&highlight=heel+toe#post5712103post4250879)) || |
| |{{:techtalk:ref:carb:caddy_ornament_ac_1_by_lone_rider.jpg?direct&300|}}|{{:techtalk:ref:carb:caddy_ornament_ac_2_by_lone_rider.jpg?direct&300|}}| |
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