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techtalk:ref:carb07 [2022/03/31 21:17] hippysmack [Velocity Stack] |
techtalk:ref:carb07 [2024/01/12 00:02] (current) hippysmack |
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|Long idle speed screw on a Keihin CV. ((photo by Hippysmack))| | |Long idle speed screw on a Keihin CV. ((photo by Hippysmack))| | ||
|{{:techtalk:ref:carb:cv_carb_with_extended_idle_speed_screw_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:carb:cv_carb_with_extended_idle_speed_screw_by_hippysmack.jpg?direct&300|}}| | ||
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Using unknown parts or parts designed to radically alter the carb operation to favor one specific enhancement will often complicate or degrade the overall smooth operation of the carb. | Using unknown parts or parts designed to radically alter the carb operation to favor one specific enhancement will often complicate or degrade the overall smooth operation of the carb. | ||
- | {{:techtalk:ref:carb:cvp-partsforcv40-1.jpg?600|}} ((pics from BestCoastXL at http://xlforum.net/forums/showthread.php?t=2079965 - Annotated by IXL2Relax)) | + | {{:techtalk:ref:carb:cvp-partsforcv40-1.jpg?600|}} ((pics from BestCoastXL at https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/202758-should-i-buy-carb-parts-from-amazon-rather-than-cv-performance-no-you-should-not?t=2079965 - Annotated by IXL2Relax)) |
====== Idle Mixture Screw - IMS - Aftermarket & Mods ====== | ====== Idle Mixture Screw - IMS - Aftermarket & Mods ====== | ||
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Then pry the plug out using a pick or you could twist a small sheet metal screw into the hole to pull the plug out. \\ | Then pry the plug out using a pick or you could twist a small sheet metal screw into the hole to pull the plug out. \\ | ||
With the plug removed clean the area around the mixture screw so no metal fragments remain. \\ | With the plug removed clean the area around the mixture screw so no metal fragments remain. \\ | ||
- | {{techtalk:evo:carb:cv40-imscap-drillbit.jpg?300|}} ((photo by cantolina of the XLFORUM http://xlforum.net/forums/showthread.php?t=14949)) Circled area is where you drill out the plug. {{:techtalk:ref:carb:cv_carb_bottom_by_cantolina.jpg?direct&300|}} ((photo by cantolina of the XLFORUM http://xlforum.net/forums/showthread.php?t=14949)) | + | {{techtalk:evo:carb:cv40-imscap-drillbit.jpg?300|}} ((photo by cantolina of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/9621-carb-adjusting-where-are-the-jets-and-the-mixture-screw?t=14949)) Circled area is where you drill out the plug. {{:techtalk:ref:carb:cv_carb_bottom_by_cantolina.jpg?direct&300|}} ((photo by cantolina of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/9621-carb-adjusting-where-are-the-jets-and-the-mixture-screw?t=14949)) |
The EZ-Just mixture screw must be threaded in completely (lightly seated) prior to backing out and making final adjustments. \\ | The EZ-Just mixture screw must be threaded in completely (lightly seated) prior to backing out and making final adjustments. \\ | ||
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If you take off the bowl, be sure to check the float setting before reinstalling the bowl. \\ | If you take off the bowl, be sure to check the float setting before reinstalling the bowl. \\ | ||
- | | EZ-Just Screw in it's 'lightly seated' position. ((photo by Matt Black of the XLFORUM http://xlforum.net/forums/showthread.php?t=2068828&page=6)) || | + | | EZ-Just Screw in it's 'lightly seated' position. ((photo by Matt Black of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/193103-newbie-cv-rebuild/page6?t=2068828&page=6)) || |
|{{:techtalk:ref:carb:ez_screw_lightly_seated_1_by_matt_black.jpg?direct&300|}}|{{:techtalk:ref:carb:ez_screw_lightly_seated_2_by_matt_black.jpg?direct&300|}}| | |{{:techtalk:ref:carb:ez_screw_lightly_seated_1_by_matt_black.jpg?direct&300|}}|{{:techtalk:ref:carb:ez_screw_lightly_seated_2_by_matt_black.jpg?direct&300|}}| | ||
|Comparison to OEM. ((photo by Hippysmack))| As installed on bottom of carb. ((photos by Hippysmack)) || | |Comparison to OEM. ((photo by Hippysmack))| As installed on bottom of carb. ((photos by Hippysmack)) || | ||
|{{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_1_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))| {{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_2_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))|{{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_3_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))| | |{{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_1_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))| {{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_2_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))|{{:techtalk:ref:carb:ez-just_88-06_a-f_mixture_screw_3_by_hippysmack.jpg?direct&300|}} ((photo byHippysmack))| | ||
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+ | **CVP Easy-Just IMS - Modding**\\ | ||
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+ | From RandallM of the XLForum((Post#80 - https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/203772-jet-hole-size-chart?t=2081062)) - Here is how I indexed my screw. I filed some small flats on a small nail, and JB Welded it in the slot. I left the small end sticking out a bit so I can feel both ends. | ||
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+ | {{techtalk:ref:carb:cvp-easyjust-ims-mod6.jpg?direct&300|}} | ||
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Several mods to the thumbscrew have been done to make counting turns while turning the screw easier. \\ | Several mods to the thumbscrew have been done to make counting turns while turning the screw easier. \\ | ||
- | |The aftermarket thumb screw head doesn't have a slot for a screwdriver (which can serve for visual positioning). \\ A small hole drilled off center will give a visual position of the screw for adjustment later. ((photos by sifty of the XLFORUM http://xlforum.net/forums/showthread.php?t=1592463&page=48))|| | + | |The aftermarket thumb screw head doesn't have a slot for a screwdriver (which can serve for visual positioning). \\ A small hole drilled off center will give a visual position of the screw for adjustment later. ((photos by sifty of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/146604-first-harley-1975-xl1000-caf%C3%A9-project/page48?t=1592463&page=48))|| |
|{{:techtalk:evo:carb:idle_mixture_screw_3_by_sifty.jpg?direct&300|}}|{{:techtalk:evo:carb:idle_mixture_screw_4_by_sifty.jpg?direct&300|}}| | |{{:techtalk:evo:carb:idle_mixture_screw_3_by_sifty.jpg?direct&300|}}|{{:techtalk:evo:carb:idle_mixture_screw_4_by_sifty.jpg?direct&300|}}| | ||
- | This replacement needle makes it so much easier to adjust the idle mixture. ((Folkie of the XLFORUM http://xlforum.net/forums/showthread.php?t=183642)) \\ | + | This replacement needle makes it so much easier to adjust the idle mixture. ((Folkie of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/47776-idle-mixture-needle-mod?t=183642)) \\ |
However, it is easier to count the turns by hand with this mod. \\ | However, it is easier to count the turns by hand with this mod. \\ | ||
A spigot was added to the face of the knob. \\ | A spigot was added to the face of the knob. \\ | ||
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Then the side nearest the air cleaner (right of bike) was marked to index when to stop turning to the right. \\ | Then the side nearest the air cleaner (right of bike) was marked to index when to stop turning to the right. \\ | ||
The needle was then removed, drilled and tapped (10 BA) for the spigot. \\ | The needle was then removed, drilled and tapped (10 BA) for the spigot. \\ | ||
- | You can also drill hole through the knob from side to side and Superglue a screw in it. ((Hot Rod Sporty of the XLFORUM http://xlforum.net/forums/showthread.php?t=183642)) \\ | + | You can also drill hole through the knob from side to side and Superglue a screw in it. ((Hot Rod Sporty of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/47776-idle-mixture-needle-mod?t=183642)) \\ |
The EZ-Just makes it easy to adjust the idle mixture by hand without a screwdriver. \\ | The EZ-Just makes it easy to adjust the idle mixture by hand without a screwdriver. \\ | ||
- | But, if you've gone 3 to 3-1/2 turns out, then change to the next biggest slow jet. ((Folkie of the XLFORUM http://xlforum.net/forums/showthread.php?t=183642)) \\ | + | But, if you've gone 3 to 3-1/2 turns out, then change to the next biggest slow jet. ((Folkie of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/47776-idle-mixture-needle-mod?t=183642)) \\ |
- | | Spigot installed to count the turns. ((photo by Folkie of the XLFORUM http://xlforum.net/forums/showthread.php?t=183642)) | | + | | Spigot installed to count the turns. ((photo by Folkie of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/47776-idle-mixture-needle-mod?t=183642)) | |
|{{:techtalk:evo:carb:idle_mixture_screw_mod_by_folkie.jpg?direct&300|}}| | |{{:techtalk:evo:carb:idle_mixture_screw_mod_by_folkie.jpg?direct&300|}}| | ||
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A piece of 3/16" brass tubing and a knurled nut from the hardware store. \\ | A piece of 3/16" brass tubing and a knurled nut from the hardware store. \\ | ||
- | | Factory idle mixture screw extended. ((photos by tchuck of the XLFORUM http://xlforum.net/forums/showthread.php?t=183642)) || | + | | Factory idle mixture screw extended. ((photos by tchuck of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/47776-idle-mixture-needle-mod?t=183642)) || |
|{{:techtalk:evo:carb:idle_mixture_screw_mod_2_by_tchuck.jpg?direct&300|}}|{{:techtalk:evo:carb:idle_mixture_screw_mod_3_by_tchuck.jpg?direct&300|}}| | |{{:techtalk:evo:carb:idle_mixture_screw_mod_2_by_tchuck.jpg?direct&300|}}|{{:techtalk:evo:carb:idle_mixture_screw_mod_3_by_tchuck.jpg?direct&300|}}| | ||
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|{{:techtalk:ref:carb:velocity_stack_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:carb:velocity_stack_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:carb:velocity_stack_5_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:carb:velocity_stack_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:carb:velocity_stack_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:carb:velocity_stack_5_by_hippysmack.jpg?direct&300|}}| | ||
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====== Replacing the Plastic Fuel Inlet Fitting with a Brass 90 Degree Fitting ====== | ====== Replacing the Plastic Fuel Inlet Fitting with a Brass 90 Degree Fitting ====== | ||
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|{{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_7_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_7_by_hippysmack.jpg?direct&300|}}| | ||
- | | Keihin butterfly (non CV). Here is on way to do it. Break the plastic off and run a hose on the factory brass nipple. ((photos by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=209347&highlight=float+level&page=21)) ||| | + | | Keihin butterfly (non CV). Here is on way to do it. Break the plastic off and run a hose on the factory brass nipple. ((photos by Hopper of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/50355-and-yet-another-77-ground-up-rebuild/page21?t=209347&highlight=float+level&page=21)) ||| |
|{{:techtalk:ref:carb:keihin_butterfly_carb_23_by_hopper.jpg?direct&300|}}|{{:techtalk:ref:carb:keihin_butterfly_carb_24_by_hopper.jpg?direct&300|}}|{{:techtalk:ref:carb:keihin_butterfly_carb_25_by_hopper.jpg?direct&300|}}| | |{{:techtalk:ref:carb:keihin_butterfly_carb_23_by_hopper.jpg?direct&300|}}|{{:techtalk:ref:carb:keihin_butterfly_carb_24_by_hopper.jpg?direct&300|}}|{{:techtalk:ref:carb:keihin_butterfly_carb_25_by_hopper.jpg?direct&300|}}| | ||
Replacing the the hipple with a brass elbow is detailed below. \\ | Replacing the the hipple with a brass elbow is detailed below. \\ | ||
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===== Tools ===== | ===== Tools ===== | ||
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{{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_tools_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_tools_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | ||
===== Part Considerations ===== | ===== Part Considerations ===== | ||
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* Brass 90° elbow | * Brass 90° elbow | ||
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I pre-made puller was bought for the pics below. \\ | I pre-made puller was bought for the pics below. \\ | ||
But you can also use a 1/4'x20 threaded rod about a foot long screwed into the fitting. \\ | But you can also use a 1/4'x20 threaded rod about a foot long screwed into the fitting. \\ | ||
- | Then slip a thin piece of pipe nipple over the rod with a washer and nut onto the end of the rod. ((tgrover of the XLFORUM http://xlforum.net/forums/showthread.php?t=501871)) \\ | + | Then slip a thin piece of pipe nipple over the rod with a washer and nut onto the end of the rod. ((tgrover of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72657-what-carb-is-this-and-how-do-i-set-it-up?t=501871)) \\ |
Place the spacer (or deep socket) over the brass nipple. \\ | Place the spacer (or deep socket) over the brass nipple. \\ | ||
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A socket may be used as a spacer with the appropriate length bolt. \\ | A socket may be used as a spacer with the appropriate length bolt. \\ | ||
- | {{:techtalk:ref:carb:socket_as_spacer_for_removing_cv_carb_inlet_by_matt_black.jpg?direct&300|}} ((photo by Matt Black of the XLFORUM http://xlforum.net/forums/showthread.php?p=5685578&highlight=fuel+inlet+elbow#post5685578)) \\ | + | {{:techtalk:ref:carb:socket_as_spacer_for_removing_cv_carb_inlet_by_matt_black.jpg?direct&300|}} ((photo by Matt Black of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/193103-newbie-cv-rebuild/page7?highlight=fuel+inlet+elbow#post4213142)) \\ |
{{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_17_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_18_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_19_by_hippysmack.jpg?direct&300|}} | {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_17_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_18_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_19_by_hippysmack.jpg?direct&300|}} | ||
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Blow the passage out again to ensure of no debris before installing the bowl. ((photos by Hippysmack)) \\ | Blow the passage out again to ensure of no debris before installing the bowl. ((photos by Hippysmack)) \\ | ||
{{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_40_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_41_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_42_by_hippysmack.jpg?direct&300|}} \\ | {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_40_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_41_by_hippysmack.jpg?direct&300|}} {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_42_by_hippysmack.jpg?direct&300|}} \\ | ||
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