Differences

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--- techtalk:ref:carb07 [2021/08/09 01:41]
ixl2relax [Needle & Emulsion Tubet]
+++ techtalk:ref:carb07 [2024/01/12 00:02] (current)
hippysmack
@@ Line 4: / Line 4: @@
 ====== Keihin Carb Upgrades & Aftermarket - For Butterfly and CV Types ======
 \\
-====== Needle & Emulsion Tube ======
 ====== Idle Speed Screw ======
+**Factory Idle Speed Screw - Modding**\\
+You can stick a dime in the adjuster screw slot and braze it to the screw to make future adjustments by hand. \\
+{{:techtalk:ref:carb:keihin_carb_1_by_ddddylan_-_annotated.jpg?direct&300|}} ((photo by DDDDylan of the XLFORUM, annotated by Hippysmack))
 **CVP Extended Idle Speed Screw**\\
@@ Line 20: / Line 20: @@
 |{{:techtalk:ref:carb:cv_carb_with_extended_idle_speed_screw_by_hippysmack.jpg?direct&300|}}|
-**Factory Idle Speed Screw - Modding**\\
+\\
-You can stick a dime in the adjuster screw slot and braze it to the screw to make future adjustments by hand. \\
-{{:techtalk:ref:carb:keihin_carb_1_by_ddddylan_-_annotated.jpg?direct&300|}} ((photo by DDDDylan of the XLFORUM, annotated by Hippysmack))
+====== Needle & Emulsion Tube ======
 \\
+Changes in the needle and emulsion tubes from aftermarket vendors may modify the (stock/oem) AFR from just off idle thru wide-open throttle. The length and size of the needle as it moves thru the needle jet along with the size and placement of the holes in the emulsion tube, will determine the air-fuel ratio of the fuel. Along with the other operating parts of the carb, they affect how well the engine operates under each varying condition.
+CV Performance offers two aftermarket needles, Velocity & N65, and one emulsion tube, Velocity. The CVP N65 is designed as an equivalent alternative to the Keihin N65C needle, which HD & Keihin have stopped producing. The Velocity Needle & Velocity Emulsion tube are designed to provide a different AFR.
+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 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 ======
@@ Line 36: / Line 41: @@
 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. \\
-{{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. \\
@@ Line 59: / Line 64: @@
 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|}}|
 |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))|
+**CVP Easy-Just IMS - Modding**\\
+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.
+{{techtalk:ref:carb:cvp-easyjust-ims-mod6.jpg?direct&300|}}
@@ Line 70: / Line 82: @@
 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|}}|
-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. \\
 A spigot was added to the face of the knob. \\
@@ Line 79: / Line 91: @@
 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. \\
-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. \\
-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|}}|
@@ Line 93: / Line 105: @@
 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|}}|
@@ Line 104: / Line 116: @@
 "Bolt-on performance that installs in minutes" although no performance enhancements have been found while using them. \\
 Aluminum type velocity stacks like the "V-Ductor" from CV Performance have been used and tested to find no HP gains from them.
-Some may still cite 'peace of mind' and there is no downside to using it other than the price.
+Some may still cite 'peace of mind' and there is no downside to using it other than the price. \\
 It requires a total of 2 gaskets (included) to install. ((photos by Hippysmack)) \\
@@ Line 117: / Line 129: @@
 |{{: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|}}|
 ====== Replacing the Plastic Fuel Inlet Fitting with a Brass 90 Degree Fitting ======
@@ Line 130: / Line 140: @@
 |{{: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|}}|
 Replacing the the hipple with a brass elbow is detailed below. \\
 ===== Tools =====
@@ Line 146: / Line 157: @@
 {{:techtalk:ref:carb:cv_fuel_inlet_elbow_mod_tools_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
 ===== Part Considerations =====
   * Brass 90° elbow
@@ Line 231: / Line 241: @@
 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. \\
-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. \\
@@ Line 243: / Line 253: @@
 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|}}
@@ Line 272: / Line 282: @@
 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|}} \\

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