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techtalk:evo:carb02c [2020/12/25 02:47] ixl2relax |
techtalk:evo:carb02c [2024/01/02 22:07] (current) hippysmack |
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| "IXL2Relax, you said that you prefer to eliminate the parts like the ones I have. In all seriousness - why? I am wondering because I have not been happy with how my bike sometimes runs. Before I tell you what I don't like, I want to see if the reasons you don't like DynoJet parts are the same things I don't like about how my bike runs." | "IXL2Relax, you said that you prefer to eliminate the parts like the ones I have. In all seriousness - why? I am wondering because I have not been happy with how my bike sometimes runs. Before I tell you what I don't like, I want to see if the reasons you don't like DynoJet parts are the same things I don't like about how my bike runs." | ||
| - | IXL2Relax replied as follows in Post#20 of this XLForum Thread: http://xlforum.net/forums/showthread.php?t=1792262 | + | IXL2Relax replied as follows in Post#20 of this XLForum Thread: https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/166789-just-bought-a-used-sportster-checklists-for-making-it-right?t=1792262 |
| Well - my recommendation is based on user reports - Back when sportster.org was operating, there was a lot of interest in mods and people found certain ways to 'Enhance Performance'. The definition was mostly subjective and like many things in life, we want our money to buy what we intended, so our perspective is somewhat altered once we buy something (or buy into something). We usually find a way to validate or justify what we spent our money or time on. | Well - my recommendation is based on user reports - Back when sportster.org was operating, there was a lot of interest in mods and people found certain ways to 'Enhance Performance'. The definition was mostly subjective and like many things in life, we want our money to buy what we intended, so our perspective is somewhat altered once we buy something (or buy into something). We usually find a way to validate or justify what we spent our money or time on. | ||
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| - | Comments from ASWRacing in Post#16 on this XLForum Thread: [[http://xlforum.net/forums/showthread.php?t=2074979|Is it worth fitting dynojet kit?]] | + | Comments from ASWRacing in Post#16 on this XLForum Thread: [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/198242-is-it-worth-fitting-dynojet-kit?t=2074979|Is it worth fitting dynojet kit?]] |
| Bottom line is that a kit is totally unnecessary to make a good running CV. You can do it with less than ten bucks worth of jets from your dealer, or an outfit like CV Performance. In some cases you'll get it to run a little better with a couple bucks more for a new needle, too, depends on the needle you already have. Do that, and the carb will work as well as it's ever going to work. | Bottom line is that a kit is totally unnecessary to make a good running CV. You can do it with less than ten bucks worth of jets from your dealer, or an outfit like CV Performance. In some cases you'll get it to run a little better with a couple bucks more for a new needle, too, depends on the needle you already have. Do that, and the carb will work as well as it's ever going to work. | ||
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| As already mentioned in the main CV40 carb tuning page, the Dynojet Kits (and many equivalent ones) can be an issue. Typically, they replace the factory needle, emulsion tube, main jet & diaphragm/slide spring. They also recommend that you drill the slide vacuum hole out for quicker throttle response. The Dynojet emulsion tube and main jets are not compatible with the Keihin emulsion tube/jets - they use different threads, which means you can only buy jets from them. | As already mentioned in the main CV40 carb tuning page, the Dynojet Kits (and many equivalent ones) can be an issue. Typically, they replace the factory needle, emulsion tube, main jet & diaphragm/slide spring. They also recommend that you drill the slide vacuum hole out for quicker throttle response. The Dynojet emulsion tube and main jets are not compatible with the Keihin emulsion tube/jets - they use different threads, which means you can only buy jets from them. | ||
| - | You have a guessing game if you begin to mix parts together from different carb kits. Every change you make, creates a different relationship to the other parts - and mixing different kit parts often makes a relatively huge change in relationships. I'm not convinced that using a lighter spring or drilling the slide is right (as recommended by Dynojet). Even though the CVP Tuner's Kit has a 7/64" drill bit included, they have recommended not using it unless the OEM hole has burrs in it. ((http://xlforum.net/forums/showpost.php?p=5289784&postcount=12)) The Stock vacuum hole is .097". I don't recommend changing it at all. If there are burrs, smooth them out with a very small round file and don't alter the overall diameter. | + | You have a guessing game if you begin to mix parts together from different carb kits. Every change you make, creates a different relationship to the other parts - and mixing different kit parts often makes a relatively huge change in relationships. I'm not convinced that using a lighter spring or drilling the slide is right (as recommended by Dynojet). Even though the CVP Tuner's Kit has a 7/64" drill bit included, they have recommended not using it unless the OEM hole has burrs in it. ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/180214-drilling-the-vacuum-slide?postcount=12#post3851291)) The Stock vacuum hole is .097". I don't recommend changing it at all. If there are burrs, smooth them out with a very small round file and don't alter the overall diameter. |
| Stock Keihin needles & jets are often critical to a well operating carb. Note these comments by Joe Minton in reference to HD & aftermarket carb tuning kits: “The needle and needle jet in these kits are made of brass; the stock Keihin needle is polished hard-anodized aluminum, and the needle jet is hard brass. The brass-on-brass of the kit wears quickly and further richens an already too-rich mixture. The stock parts hardly wear at all. I have examined stock needles and jets with 45,000 to 70,000 miles of use and could not detect measurable wear.” | Stock Keihin needles & jets are often critical to a well operating carb. Note these comments by Joe Minton in reference to HD & aftermarket carb tuning kits: “The needle and needle jet in these kits are made of brass; the stock Keihin needle is polished hard-anodized aluminum, and the needle jet is hard brass. The brass-on-brass of the kit wears quickly and further richens an already too-rich mixture. The stock parts hardly wear at all. I have examined stock needles and jets with 45,000 to 70,000 miles of use and could not detect measurable wear.” | ||
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| Rubbermount_EVO CV carb tuning with AFR meter, still got questions\\ | Rubbermount_EVO CV carb tuning with AFR meter, still got questions\\ | ||
| - | http://xlforum.net/forums/showthread.php?t=1985227\\ | + | https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/185318-cv-carb-tuning-with-afr-meter-still-got-questions?t=1985227\\ |
| Drilling The Vacuum Slide (Don't Do It!)\\ | Drilling The Vacuum Slide (Don't Do It!)\\ | ||
| - | http://xlforum.net/forums/showthread.php?t=1937640\\ | + | https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/180214-drilling-the-vacuum-slide?t=1937640\\ |
| Tuning the CV40 with Innovate AFR (copycat thread)\\ | Tuning the CV40 with Innovate AFR (copycat thread)\\ | ||
| - | http://xlforum.net/forums/showthread.php?t=1639969\\ | + | https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/152062-tuning-the-cv40-with-innovate-afr-copycat-thread?t=1639969\\ |
| CV-Performance VS Dynojet\\ | CV-Performance VS Dynojet\\ | ||
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| SECRETS OF THE DYNOJET KIT REVEALED\\ | SECRETS OF THE DYNOJET KIT REVEALED\\ | ||
| - | http://xlforum.net/forums/showthread.php?t=11088\\ | + | https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/7295-secrets-of-the-dynojet-kit-revealed?t=11088\\ |
