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techtalk:ref:carb09 [2019/09/01 18:14] hippysmack [Ironhead - Installing a Keihin CV Carb] |
techtalk:ref:carb09 [2024/01/12 00:07] (current) hippysmack |
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| ====== Ironhead - Installing a Keihin CV Carb ====== | ====== Ironhead - Installing a Keihin CV Carb ====== | ||
| + | See also in the Evo section of the Sportsterpedia: \\ | ||
| + | * [[:techtalk:evo:carb01|Basic Carb Model Info]] | ||
| + | * [[:techtalk:evo:carb02|Keihin CV40 Carb Functions, Adjustments, Tuning]] | ||
| + | * [[:techtalk:evo:carb01a|Rebuilding the Keihin CV40 Carb]] | ||
| + | |||
| + | ---- | ||
| + | |||
| + | |||
| The filter sticks out about 1" farther than before, but it doesn't look bad. \\ | The filter sticks out about 1" farther than before, but it doesn't look bad. \\ | ||
| The bike now runs pretty decently with a stable idle. There is a lot more mid-range punch. It's weak on the top end, though. \\ | The bike now runs pretty decently with a stable idle. There is a lot more mid-range punch. It's weak on the top end, though. \\ | ||
| Here's a view from the rider's seat. | Here's a view from the rider's seat. | ||
| - | {{: techtalk:ref:carb:ih_cv_carb_swap_17_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) | + | {{: techtalk:ref:carb:ih_cv_carb_swap_17_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) |
| + | Remove the old air cleaner and carb. \\ | ||
| + | {{:techtalk:ref:carb:ih_cv_carb_swap_9_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_10_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\ | ||
| - | A Screaming Eagle K&N air filter kit was used for this carb swap. Here are some pics of mounting it to the carb. \\ | + | ====== Intake Manifold to Carb Mount ====== |
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_1_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_2_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\ | + | Three most common ways to mount a CV to an Ironhead intake: \\ |
| + | A Mikuni metric adapter, a press on adapter or a non press adapter - (requires stock CV seal). ((photos by GA_Ironhead of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/81692-quick-relpy-need-carb-fitment?postcount=5#post1683898)) \\ | ||
| + | A press-on adapter is sold that press-fits on the carb spigot with JB Weld. \\ | ||
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_3_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_4_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\ | + | {{:techtalk:ref:carb:metric_mikuni_adapter_by_ga_ironhead.jpg?direct&300|}} {{:techtalk:ref:carb:press-on_carb_adapter.jpg?direct&300|}} {{:techtalk:ref:carb:non_press_carb_adapter.jpg?direct&300|}} |
| - | This is not necessary but the VOES was attached to the new filter back plate. \\ | + | {{:techtalk:ref:carb:ih_cv_carb_swap_3_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_4_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\ |
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_5_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_6_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\ | + | |
| - | These pics show the stock air filter protrusion from the gas tank. \\ | + | ====== Carb to Air Cleaner Mount ====== |
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_7_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_8_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\ | + | The original XLCR intake manifold was used but with a rubberized flanged adapter to the carb. \\ |
| + | A Screaming Eagle / K&N air filter assembly was used for this carb swap. Here are some pics of mounting it to the carb. \\ | ||
| + | {{:techtalk:ref:carb:ih_cv_carb_swap_1_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_2_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\ | ||
| + | |||
| + | The air cleaner element was installed, connected up the fuel line, and throttle cable. \\ | ||
| + | (the return cable is not being used here because the pull spring is pretty stiff. If it were to stick, it can hit the kill button) \\ | ||
| + | {{:techtalk:ref:carb:ih_cv_carb_swap_14_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_15_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\{{:techtalk:ref:carb:ih_cv_carb_swap_16_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) | ||
| + | |||
| + | ====== Installing the VOES (if applicable) ====== | ||
| + | This is not necessary, but here the VOES was attached to the new filter back plate. \\ | ||
| + | {{:techtalk:ref:carb:ih_cv_carb_swap_5_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_6_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\ | ||
| - | Removing the old air and Keihin non-CV carb. \\ | ||
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_9_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_10_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\ | ||
| Bolt up the carb using the rubberized flange adapter. \\ | Bolt up the carb using the rubberized flange adapter. \\ | ||
| The VOES wiring reconnected. (one wire to ground, the other to the ignition (MSD) control unit for vacuum ignition retard). \\ | The VOES wiring reconnected. (one wire to ground, the other to the ignition (MSD) control unit for vacuum ignition retard). \\ | ||
| An aluminum brace was fabricated to support the carb. \\ | An aluminum brace was fabricated to support the carb. \\ | ||
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_11_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_12_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\{{:techtalk:ref:carb:ih_cv_carb_swap_13_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) | + | {{:techtalk:ref:carb:ih_cv_carb_swap_11_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_12_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\{{:techtalk:ref:carb:ih_cv_carb_swap_13_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) |
| - | + | ||
| - | Next, the air cleaner element was installed, connected up the fuel line, and throttle cable. \\ | + | |
| - | (the return cable is not being used here because the pull spring is pretty stiff. If it were to stick, it can hit the kill button) \\ | + | |
| - | {{:techtalk:ref:carb:ih_cv_carb_swap_14_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_15_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) \\{{:techtalk:ref:carb:ih_cv_carb_swap_16_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM http://xlforum.net/forums/showthread.php?t=636098)) | + | |
| + | ====== Leg Room ====== | ||
| + | These pics show the stock air filter protrusion from the gas tank. \\ | ||
| + | {{:techtalk:ref:carb:ih_cv_carb_swap_7_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) {{:techtalk:ref:carb:ih_cv_carb_swap_8_by_blight.jpg?direct&300|}} ((photo by BLIGHT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/84301-40mm-cv-carb-swap-today?t=636098)) \\ | ||
| + | ====== Pics of Conversions ====== | ||
| + | {{:techtalk:ref:carb:cv_on_an_ironhead_1_by_ga_ironhead.jpg?direct&300|}} ((photo by GA_Ironhead of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/81692-quick-relpy-need-carb-fitment#post1684786)) {{:techtalk:ref:carb:cv_on_an_ironhead_2_by_ga_ironhead.jpg?direct&300|}} ((photo by GA_Ironhead of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/81692-quick-relpy-need-carb-fitment#post1684786)) \\ | ||
| \\ | \\ | ||
