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| techtalk:evo:carb02 [2022/02/18 02:07] – [Setting The Float Level] ixl2relax | techtalk:evo:carb02 [2024/07/01 22:27] (current) – [The Idle Drop Method (IDM) for Setting Idle Fuel] ixl2relax | ||
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| This process will give you a good rigid mount of the carb to the cylinder-heads while maintaining a good alignment of the carb with the manifold, all working together to eliminate those pesky intake air leaks.\\ | This process will give you a good rigid mount of the carb to the cylinder-heads while maintaining a good alignment of the carb with the manifold, all working together to eliminate those pesky intake air leaks.\\ | ||
| - | ((http:// | + | ((https://www.xlforum.net/ |
| \\ | \\ | ||
| **Check the Slide Diaphragm** - Be sure the slide operates correctly & the diaphragm is not torn or punctured. To do this, remove the air cleaner and reach your finger into the carb throat to the slide - push the slide up and quickly let the slide fall down. You should hear the vacuum sound as the slide returns to the bottom position. | **Check the Slide Diaphragm** - Be sure the slide operates correctly & the diaphragm is not torn or punctured. To do this, remove the air cleaner and reach your finger into the carb throat to the slide - push the slide up and quickly let the slide fall down. You should hear the vacuum sound as the slide returns to the bottom position. | ||
| - | This is from an [[http:// | + | This is from an [[https://www.xlforum.net/ |
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| More info & links here: [[: | More info & links here: [[: | ||
| - | **__To check for DynoJet parts, look at these 4 things:__** ((Identify DJ vs Keihin - http:// | + | **__To check for DynoJet parts, look at these 4 things:__** ((Identify DJ vs Keihin - https://www.xlforum.net/ |
| * Check the Needle: Stock is Nail-shaped - DJ has grooves & a clip | * Check the Needle: Stock is Nail-shaped - DJ has grooves & a clip | ||
| * Check the Diaphragm/ | * Check the Diaphragm/ | ||
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| | {{: | | {{: | ||
| - | From the factory, there is a cap over the Idle Mixture Screw. This needs to be removed to make IMS adjustments during tuning. It does not need to be replaced when done, but the cap is available as HD P/N 28015-01 if you would like to replace it when done making changes.((IMS Cap - http:// | + | From the factory, there is a cap over the Idle Mixture Screw. This needs to be removed to make IMS adjustments during tuning. It does not need to be replaced when done, but the cap is available as HD P/N 28015-01 if you would like to replace it when done making changes.((IMS Cap - https://www.xlforum.net/ |
| The Idle Mixture Screw " | The Idle Mixture Screw " | ||
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| To remove the IMS cap, carefully drill a small hole in the center of the cap (barely enough to make a hole). Be extremely careful not to overdrill into the cap because you will damage the screw that is behind the cap. Now, carefully twist in a sheetmetal screw about one thread, then pull on the screw to remove the cap. | To remove the IMS cap, carefully drill a small hole in the center of the cap (barely enough to make a hole). Be extremely careful not to overdrill into the cap because you will damage the screw that is behind the cap. Now, carefully twist in a sheetmetal screw about one thread, then pull on the screw to remove the cap. | ||
| - | An aftermarket kit (like E-Z-just) can be purchased with an extended screw head for hand tuning. It comes with the " | + | An aftermarket kit (like E-Z-just) can be purchased with an extended screw head for hand tuning. It comes with the " |
| **Checklist Of What You Have** - In order for others to provide quality advice, it is important that you know and can provide quality information about the build of your bike. Here's a list of important information for you to know and provide for TUNING of the CV carburetored EVOs (1986-2006): | **Checklist Of What You Have** - In order for others to provide quality advice, it is important that you know and can provide quality information about the build of your bike. Here's a list of important information for you to know and provide for TUNING of the CV carburetored EVOs (1986-2006): | ||
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| Inside of CV Carburetor: | Inside of CV Carburetor: | ||
| |Slow Jet |(Stock, Specify Known Size)| | |Slow Jet |(Stock, Specify Known Size)| | ||
| - | |Idle Mixture Screw |(Set at xxx turns from lite seat)| | + | |Idle Mixture Screw |(Set at xxx full turns from lite seat)| |
| |IMS set by Idle Drop |(Y/N - Did you change it?)| | |IMS set by Idle Drop |(Y/N - Did you change it?)| | ||
| |Drilled Slide? |(Y/N - Based on who's recommendation? | |Drilled Slide? |(Y/N - Based on who's recommendation? | ||
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| |Fuel Float Valve |(Y/N - Cleaned & Checked, Replaced)| | |Fuel Float Valve |(Y/N - Cleaned & Checked, Replaced)| | ||
| - | | {{ : | + | | {{ : |
| \\ | \\ | ||
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| ==== Setting The Float Level ===== | ==== Setting The Float Level ===== | ||
| - | (Using a 1/2-inch spacer to lift the float side of the carb will approximate the 15°-20° angle needed.)\\ | + | (TIP: Using a 1/2-inch spacer to lift the float side of the carb will approximate the 15°-20° angle needed.)\\ |
| **Click on the small image below for a larger version of the detailed instructions regarding setting the float level:**\\ | **Click on the small image below for a larger version of the detailed instructions regarding setting the float level:**\\ | ||
| {{: | {{: | ||
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| {{: | {{: | ||
| - | In [[http:// | + | In [[https://www.xlforum.net/ |
| ** Tip for Checking Fuel/Float Level - With Carb Installed ** | ** Tip for Checking Fuel/Float Level - With Carb Installed ** | ||
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| * Check intake seals on manifold (at heads) - replace now while it's apart | * Check intake seals on manifold (at heads) - replace now while it's apart | ||
| * Check intake seal between manifold & carb - replace now | * Check intake seal between manifold & carb - replace now | ||
| - | * Minimize Throttle Plate opening at idle - Set it between Idle Port & Transfer Ports if possible [[http:// | + | * Minimize Throttle Plate opening at idle - Set it between Idle Port & Transfer Ports if possible [[https://www.xlforum.net/ |
| * Check Idle Mixture Screw (IMS) screw/ | * Check Idle Mixture Screw (IMS) screw/ | ||
| * Check IMS seat (Has the screw needle tip deformed the hole?) | * Check IMS seat (Has the screw needle tip deformed the hole?) | ||
| - | * Set initial IMS to 2-1/2 turns out from lite seat | + | * Set initial IMS to 2-1/2 full (360°) |
| \\ | \\ | ||
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| You'll need (4) screws that are 16mm in length for the float bowl. Then you'll need (3) screws that are 16mm in length and (1) screw that is 20mm in length for the Diaphragm Cover. If you choose to use **Button Socket Head** Screws for the top cover, they use a 2.5mm hex wrench. | You'll need (4) screws that are 16mm in length for the float bowl. Then you'll need (3) screws that are 16mm in length and (1) screw that is 20mm in length for the Diaphragm Cover. If you choose to use **Button Socket Head** Screws for the top cover, they use a 2.5mm hex wrench. | ||
| - | You can also replace the (3) Accelerator Pump screws with 4mm x 10mm long. ((rocketmangb & Folkie - http:// | + | You can also replace the (3) Accelerator Pump screws with 4mm x 10mm long. ((rocketmangb & Folkie - https://www.xlforum.net/ |
| Summary List:\\ | Summary List:\\ | ||
| + | [[techtalk: | ||
| + | |||
| 4ea - 4mm x 16mm x .70TPI for Float Bowl\\ | 4ea - 4mm x 16mm x .70TPI for Float Bowl\\ | ||
| 3ea - 4mm x 16mm x .70TPI for Top Diaphragm Cover\\ | 3ea - 4mm x 16mm x .70TPI for Top Diaphragm Cover\\ | ||
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| - | ( Also see: [[http:// | + | ( Also see: [[https://www.xlforum.net/ |
| As a reference, here are the OEM parts for the Carb Top Cover: | As a reference, here are the OEM parts for the Carb Top Cover: | ||
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| ==== Reinstall Slide, Diaphragm & Cover ==== | ==== Reinstall Slide, Diaphragm & Cover ==== | ||
| - | To prevent tearing the Slide Diaphragm (reinstalling) - Shu: ((Shu from this XLF thread: | + | To prevent tearing the Slide Diaphragm (reinstalling) - Shu: ((Shu from this XLF thread: |
| * Use four small dabs of wheel bearing grease in the seal channel spaced between the screw holes | * Use four small dabs of wheel bearing grease in the seal channel spaced between the screw holes | ||
| * Drop the slide into the carb (with needle, spider & spring in the center) | * Drop the slide into the carb (with needle, spider & spring in the center) | ||
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| **Needle & Needle Jet** - The needle is a tapered, nail-like, rod that operates from the bottom of the slide into the needle jet. It does not affect the flow of fuel until the throttle plate opens sufficiently to create an active vacuum in the outer section of the venturi, which will lift the slide and move the needle in the needle jet. The fuel mix supplied thru the needle jet, by your selected needle and the emulsion tube, will combine with the transfer fuel mix of the slow jet as the carb operation moves out of the transfer period into the mid-range of the throttle/ | **Needle & Needle Jet** - The needle is a tapered, nail-like, rod that operates from the bottom of the slide into the needle jet. It does not affect the flow of fuel until the throttle plate opens sufficiently to create an active vacuum in the outer section of the venturi, which will lift the slide and move the needle in the needle jet. The fuel mix supplied thru the needle jet, by your selected needle and the emulsion tube, will combine with the transfer fuel mix of the slow jet as the carb operation moves out of the transfer period into the mid-range of the throttle/ | ||
| - | The main jet, located at the bottom of the emulsion tube, is way below where the needle rides. It has no variable relationship with what the needle does except to create an eventual upper fuel limit at WOT, when the needle is fully out of the needle jet. ((wedge of the XLFORUM | + | The main jet, located at the bottom of the emulsion tube, is way below where the needle rides. It has no variable relationship with what the needle does except to create an eventual upper fuel limit at WOT, when the needle is fully out of the needle jet. ((wedge of the XLFORUM |
| The space between the needle and needle jet control fuel flow coming out of the emulsion tube into the throat. After the needle is out of the needle jet, then the main jet will become the limiting factor for the fuel flow at the wide open throttle position (WOT). Until the needle gets out of the way, the main jet is doing nothing to limit the needed fuel. | The space between the needle and needle jet control fuel flow coming out of the emulsion tube into the throat. After the needle is out of the needle jet, then the main jet will become the limiting factor for the fuel flow at the wide open throttle position (WOT). Until the needle gets out of the way, the main jet is doing nothing to limit the needed fuel. | ||
| - | Significant Comment by Don Burton from this detailed discussion of __some of the needle dimensions__ at [[http:// | + | Significant Comment by Don Burton from this detailed discussion of __some of the needle dimensions__ at [[https://www.xlforum.net/ |
| "Also, elsewhere someone has measured the inside diameter of the needle jet (the needle jet, not the jet needle) as being just .114 of an inch. If so, that explains why just .001 of an inch difference in diameter of the straight portion of the needle (usually measures between .107-.110, depending upon the needle) makes a significant difference in air/fuel ratio at just above off idle and in the lower throttle settings." | "Also, elsewhere someone has measured the inside diameter of the needle jet (the needle jet, not the jet needle) as being just .114 of an inch. If so, that explains why just .001 of an inch difference in diameter of the straight portion of the needle (usually measures between .107-.110, depending upon the needle) makes a significant difference in air/fuel ratio at just above off idle and in the lower throttle settings." | ||
| - | **Emulsion Tube**((stevo of the XLFORUM | + | **Emulsion Tube**((stevo of the XLFORUM |
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| {{ : | {{ : | ||
| - | **IMS Cap** - From the factory, the cavity for the Idle Mixture Screw (IMS) is covered with a small cap. (Note from the service manual: Adjusting mixture setting by procedures other than those specified in the manual may be in violation of local regulations.) The following procedures are not specified in the manual. To remove the cap and gain access to the IMS, use a small drill bit to create a hole in the cap. Use several layers of tape on the drill bit to limit the depth the bit can penetrate the cap. If you pop thru the cap too deep with the bit, you may damage the internal screw head - Be Careful. Once your cap has a hole in it, CAREFULLY thread a self-tapping screw (blunt nose) into the hole JUST ENOUGH to capture the cap & pull it out of the IMS cavity. ((photo by cantolina of the XLFORUM | + | **IMS Cap** - From the factory, the cavity for the Idle Mixture Screw (IMS) is covered with a small cap. (Note from the service manual: Adjusting mixture setting by procedures other than those specified in the manual may be in violation of local regulations.) The following procedures are not specified in the manual. To remove the cap and gain access to the IMS, use a small drill bit to create a hole in the cap. Use several layers of tape on the drill bit to limit the depth the bit can penetrate the cap. If you pop thru the cap too deep with the bit, you may damage the internal screw head - Be Careful. Once your cap has a hole in it, CAREFULLY thread a self-tapping screw (blunt nose) into the hole JUST ENOUGH to capture the cap & pull it out of the IMS cavity.((photo by cantolina of the XLFORUM |
| **Slow Jet, Transfer Ports, Idle Port & Idle Mixture Screw** - As illustrated below, these parts function in a close relationship. The size of the Slow Jet creates a fuel mixture that is delivered to the Transfer Ports (5 openings), but is also flowed to the Idle Mixture Screw (IMS). The IMS is adjusted in small increments to allow some of the fuel mixture (from the Slow Jet) to be flowed thru the Idle Port (one opening). In this way, while both the Idle Port & the Transfer Ports are dependent on the Slow Jet, the amount of fuel to the Idle Port fuel can be controlled separately from the Transfer Ports by using the Idle Mixture Screw. A more detailed description of this operaiton follows this brief overview. | **Slow Jet, Transfer Ports, Idle Port & Idle Mixture Screw** - As illustrated below, these parts function in a close relationship. The size of the Slow Jet creates a fuel mixture that is delivered to the Transfer Ports (5 openings), but is also flowed to the Idle Mixture Screw (IMS). The IMS is adjusted in small increments to allow some of the fuel mixture (from the Slow Jet) to be flowed thru the Idle Port (one opening). In this way, while both the Idle Port & the Transfer Ports are dependent on the Slow Jet, the amount of fuel to the Idle Port fuel can be controlled separately from the Transfer Ports by using the Idle Mixture Screw. A more detailed description of this operaiton follows this brief overview. | ||
| - | **Note:** There is an XLForum discussion thread regarding the relationship between the Transfer Ports and the Slow Jet (AKA Pilot Jet): [[http:// | + | **Note:** There is an XLForum discussion thread regarding the relationship between the Transfer Ports and the Slow Jet (AKA Pilot Jet): [[https://www.xlforum.net/ |
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| Because the richness of the fuel mix is controlled by the Slow Jet, which incorporates an emulsion tube to mix fuel & air, the size of the Slow Jet has a direct effect on the proper setting of the IMS. When the Slow Jet is enlarged, the IMS (& Transfer Ports) gets a richer mix and a lower number of turns open (on the IMS) will provide the same richness (as with the previous jet & larger IMS setting). | Because the richness of the fuel mix is controlled by the Slow Jet, which incorporates an emulsion tube to mix fuel & air, the size of the Slow Jet has a direct effect on the proper setting of the IMS. When the Slow Jet is enlarged, the IMS (& Transfer Ports) gets a richer mix and a lower number of turns open (on the IMS) will provide the same richness (as with the previous jet & larger IMS setting). | ||
| - | Having gained access to the IMS, it is recommended that you start by opening the IMS from GENTLY seated to 2-1/2 turns CCW. This setting is likely to be larger than the factory setting, which is often in the 1 to 1-1/2 turns range. By opening the IMS more, we are richening the Idle Fuel Mix to provide addition fuel during idle & transfer operations.This may also help the engine run cooler. | + | Having gained access to the IMS, it is recommended that you start by opening the IMS from GENTLY seated to 2-1/2 full (360°) |
| - | **Thus far,** the throttle plate has been positioned (as much as possible) between the Idle Port & the Transfer Ports, the Slow Jet has been chosen as stock or a 45 if the engine is 1200 or Stage One, the IMS cap was removed and the IMS was adjusted to 2-1/2 turns out from GENTLY seated. In addition, a selected needle was installed in the slide along with a reasonable choice for the Main Jet. These parts and settings were selected to provide a valid STARTING POINT for further, more accurate, adjustments. | + | **Thus far,** the throttle plate has been positioned (as much as possible) between the Idle Port & the Transfer Ports, the Slow Jet has been chosen as stock or a 45 if the engine is 1200 or Stage One, the IMS cap was removed and the IMS was adjusted to 2-1/2 full (360°) |
| While the proper idle rpm will be set AFTER adjusting the IMS setting (using the Idle Speed Screw), it is important to isolate the Idle Port operation from the Transfer Ports. | While the proper idle rpm will be set AFTER adjusting the IMS setting (using the Idle Speed Screw), it is important to isolate the Idle Port operation from the Transfer Ports. | ||
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| ==== The Idle Drop Method (IDM) for Setting Idle Fuel ==== | ==== The Idle Drop Method (IDM) for Setting Idle Fuel ==== | ||
| - | The Idle Drop Method (IDM) will help find the right setting for the Idle Mixture Screw (IMS) to supply the proper fuel mix to the Idle Port.((see the chrishajer thread link below)). At idle, the engine will have difficulty if the idle fuel mix is too lean or if the idle fuel mix is too rich. There is a small range between those excesses, which is the point of this adjustment. This procedure does require the correct Slow Jet, so you may need to change the Slow Jet if you cannot find the described idle range while performing the IDM. | + | The Idle Drop Method (IDM) will help find the right setting for the Idle Mixture Screw (IMS) to supply the proper fuel mix to the Idle Port.((see the chrishajer thread link below)). At idle, the engine will have difficulty if the idle fuel mix is too lean or if the idle fuel mix is too rich. There is a small range between those excesses, which is the point of this adjustment. This procedure does require the correct Slow Jet, so you may need to change the Slow Jet if you cannot find the described idle range while performing the IDM. Set the IMS initially to 2-1/2 full (360°) turns out from a lite seat (closed). |
| If you have previously set the throttle plate, between the idle port and the transfer ports, using the Idle Set Screw, you may need to roll the throttle slightly (at the beginning of this process) to keep the engine idle. With the throttle grip, set the idle speed as low as possible, yet still smooth engine operation. Lock the idle speed with the throttle grip lock (rather than changing the setting of the Idle Set Screw, which should still be (as close as possible) between the Idle Port & the Transfer Ports). | If you have previously set the throttle plate, between the idle port and the transfer ports, using the Idle Set Screw, you may need to roll the throttle slightly (at the beginning of this process) to keep the engine idle. With the throttle grip, set the idle speed as low as possible, yet still smooth engine operation. Lock the idle speed with the throttle grip lock (rather than changing the setting of the Idle Set Screw, which should still be (as close as possible) between the Idle Port & the Transfer Ports). | ||
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| - | | **Note - Trouble Finding A Change** - You may still have the throttle plate too far open, thereby running on the Transfer Ports instead of the Idle Port. But, if you have carefully set the throttle plate & still can't find a fall off until below 1/2 turn out, you need a smaller Slow Jet. If you can't find a fall off in idle until beyond 3-1/2 turns out, you need a larger Slow Jet. However, it is not recommended to use a smaller size than 42 nor larger size than 46. If the IMS setting appears to make no difference, you may have other issues. You may have an intake leak or exhaust leak. You may have fuel leaking into the carb thru the vacuum hose because of a defective petcock diaphragm or thru a defective Accelerator Pump diaphragm.((oldboy at Post#7 - http:// | + | | **Note - Trouble Finding A Change** - You may still have the throttle plate too far open, thereby running on the Transfer Ports instead of the Idle Port. But, if you have carefully set the throttle plate & still can't find a fall off until below 1/2 turn out, you need a smaller Slow Jet. If you can't find a fall off in idle until beyond 3-1/2 full (360°) |
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| Doing a stage one upgrade with free flowing air cleaner and exhausts will create an even leaner condition than that from the factory configuration. In that case, start from general tuning and fix the overall lean condition. | Doing a stage one upgrade with free flowing air cleaner and exhausts will create an even leaner condition than that from the factory configuration. In that case, start from general tuning and fix the overall lean condition. | ||
| - | These comments on the XLForum are from Stevo ((Post#31 - XLForum thread: | + | These comments on the XLForum are from Stevo ((Post#31 - XLForum thread: |
| | A carb fart is basicly caused by a lean condition... often from not having enough fuel when cold or from lack of vacuum from blipping or opening the throttle too quickly... (A mikuni will do it if you open it too quickly.) Too much air is entering the intake plenum for the amount of fuel for those particualr engine requirements at that point in time.. ie : it's too lean..\\ \\ The leaner [the condition]... the crisper [the fart]... until ya get too lean and then it pops thru the intake.\\ [On the other hand} A fart thru the exhaust or flat sound is usually from a rich condition.| | | A carb fart is basicly caused by a lean condition... often from not having enough fuel when cold or from lack of vacuum from blipping or opening the throttle too quickly... (A mikuni will do it if you open it too quickly.) Too much air is entering the intake plenum for the amount of fuel for those particualr engine requirements at that point in time.. ie : it's too lean..\\ \\ The leaner [the condition]... the crisper [the fart]... until ya get too lean and then it pops thru the intake.\\ [On the other hand} A fart thru the exhaust or flat sound is usually from a rich condition.| | ||
| - | And these from Chris Hajer ((Post#8 - XLForum thread: | + | And these from Chris Hajer ((Post#8 - XLForum thread: |
| | When blipping the throttle, two things happen:\\ \\ 1. You are shooting some fuel in with the accelerator pump.\\ 2. When you blip the throttle, you are actually opening the throttle plate, and that larger opening causes a very [quick/ | | When blipping the throttle, two things happen:\\ \\ 1. You are shooting some fuel in with the accelerator pump.\\ 2. When you blip the throttle, you are actually opening the throttle plate, and that larger opening causes a very [quick/ | ||
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| **LINKS** | **LINKS** | ||
| - | * **IDLE DROP METHOD** of adjusting the CV carb idle mixture screw: [[http:// | + | * **IDLE DROP METHOD** of adjusting the CV carb idle mixture screw: [[https://www.xlforum.net/ |
| - | * Cantolina' | + | * Cantolina' |
| The Three Top Sticky Threads (in the order Cantolina has them): | The Three Top Sticky Threads (in the order Cantolina has them): | ||
| - | * **Read this First - Jetting 101**: [[http:// | + | * **Read this First - Jetting 101**: [[https://www.xlforum.net/ |
| - | * **PLUG READING 101**: [[http:// | + | * **PLUG READING 101**: [[https://www.xlforum.net/ |
| - | * **Carb basics and jetting by reading the plugs**: [[http:// | + | * **Carb basics and jetting by reading the plugs**: [[https://www.xlforum.net/ |
| - | * **Discussing Joe Minton Article about CV40 carb tuning**: [[http:// | + | * **Discussing Joe Minton Article about CV40 carb tuning**: [[https://www.xlforum.net/ |
| - | * **Carburetor Sticky Index on XLForum**: [[http:// | + | * **Carburetor Sticky Index on XLForum**: [[https://www.xlforum.net/ |
| - | * **CV Needle Drawings and Database**: [[http:// | + | * **CV Needle Drawings and Database**: [[https://www.xlforum.net/ |
| * Post a thread of your own on XLForum.net with your information from above and ask for help in tuning your particular engine/carb combination | * Post a thread of your own on XLForum.net with your information from above and ask for help in tuning your particular engine/carb combination | ||
| - | * **Provide This Info When Asking About Tuning Carb'd Models**: [[http:// | + | * **Provide This Info When Asking About Tuning Carb'd Models**: [[https://www.xlforum.net/ |
| Sub-Documents | Sub-Documents | ||
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| Insert the carb, attach the carb mounting bracket (which you are now confident will not distort the carb-to-manifold positioning), | Insert the carb, attach the carb mounting bracket (which you are now confident will not distort the carb-to-manifold positioning), | ||
| - | ((http:// | + | ((https://www.xlforum.net/ |
| \\ | \\ | ||
| - | |||
| - | |||
| ===== Accelerator Pump ===== | ===== Accelerator Pump ===== | ||
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| | 2004-2006 - 883 | 27777-04 | 27260-00 | 27577-92 | ::: | | | 2004-2006 - 883 | 27777-04 | 27260-00 | 27577-92 | ::: | | ||
| | 2004-2006 - 1200 | 27256-01 | 27260-00 | 27577-92 | ::: | | | 2004-2006 - 1200 | 27256-01 | 27260-00 | 27577-92 | ::: | | ||
| - | {{: | + | {{: |
| - | | {{: | + | | {{: |
| {{techtalk: | {{techtalk: | ||
| - | {{: | + | {{: |
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| ===== Fuel Float & Float Bowl Drain ===== | ===== Fuel Float & Float Bowl Drain ===== | ||
| - | {{: | + | {{: |
| The fuel float is created by a hollow plastic chamber. It moves on a hinge pin mounted to the carb body. It incorporates a TANG (metal tab) that operates the Float Valve. By adjusting the tang in micro-movements, | The fuel float is created by a hollow plastic chamber. It moves on a hinge pin mounted to the carb body. It incorporates a TANG (metal tab) that operates the Float Valve. By adjusting the tang in micro-movements, | ||
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| {{: | {{: | ||
| - | An XLForum Thread discussing the replacement of the cable is here (but pics are missing): | + | An XLForum Thread discussing the replacement of the cable is here (but pics are missing): |
| \\ | \\ | ||
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| Reversion is created in the engine combustion cycle by the relationship between the cams and the exhaust system. Specifically, | Reversion is created in the engine combustion cycle by the relationship between the cams and the exhaust system. Specifically, | ||
| - | If/when reversion is occuring, the intake charge ends up passing through the carb three times: pulled in, pushed out, and pulled back in again. Each time it is picking up fuel making the mixture richer. ((Based on info from Aaron Wilson from the XLForum (aswracing) - http:// | + | If/when reversion is occuring, the intake charge ends up passing through the carb three times: pulled in, pushed out, and pulled back in again. Each time it is picking up fuel making the mixture richer. ((Based on info from Aaron Wilson from the XLForum (aswracing) - https://www.xlforum.net/ |
| You can read more in the REF Section on [[techtalk: | You can read more in the REF Section on [[techtalk: | ||
| ====== More on Jetting ====== | ====== More on Jetting ====== | ||
| - | Differences in pilot jets. \\ | ||
| - | {{: | ||
| + | |||
| + | Differences in pilot jets. \\ | ||
| + | |||
| + | See the Charts Here: [[techtalk: | ||
| \\ | \\ | ||
| + | {{: | ||
| + | |||
| + | \\ | ||
| \\ | \\ | ||
| [[: | [[: | ||
