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techtalk:evo:carb02 [2022/02/18 02:07] ixl2relax [Setting The Float Level] |
techtalk:evo:carb02 [2022/05/02 10:24] ixl2relax [More on Jetting] |
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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:**\\ | ||
| {{:techtalk:evo:carb:hd-cv40-floatlevel-instructions.jpg?direct&250|}}{{:techtalk:evo:carb:hd-cv40-floatlevel.jpg|}}\\ | {{:techtalk:evo:carb:hd-cv40-floatlevel-instructions.jpg?direct&250|}}{{:techtalk:evo:carb:hd-cv40-floatlevel.jpg|}}\\ | ||
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| Summary List:\\ | Summary List:\\ | ||
| + | [[techtalk:ref:tools804#carburetor_intake_manifold_and_air_cleaner|Click Here]] for a full screw list on the fastener page in the Sportsterpedia.\\ | ||
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| 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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| {{ :techtalk:evo:carb:cv40-imscap-drillbit.jpg?200|}} | {{ :techtalk:evo:carb:cv40-imscap-drillbit.jpg?200|}} | ||
| - | **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 http://xlforum.net/forums/showthread.php?t=14949)) | + | **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 http://xlforum.net/forums/showthread.php?t=14949)) If you want to replace the cap, it is HD P/N 28015-01. |
| **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. | ||
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| ====== More on Jetting ====== | ====== More on Jetting ====== | ||
| - | Differences in pilot jets. \\ | ||
| - | {{:techtalk:evo:carb:pilot_jet_chart_by_rocketmangb.png?direct&600|}} ((drawing by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=1710330)) \\ | ||
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| + | Differences in pilot jets. \\ | ||
| + | |||
| + | See the Charts Here: [[techtalk:evo:carb01#slow_main_jets_-_p_n_comparisons|techtalk:evo:carb01#slow_main_jets_-_p_n_comparisons]] | ||
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| + | {{:techtalk:evo:carb:pilot_jet_chart_by_rocketmangb.png?direct&600|}} ((drawing by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=1710330)) \\ | ||
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| [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | ||
