Books,videos & tech manual. Tires / wheels & tire tools. Seats & accessories chassis components. Actually that’s true for tuning just about any engine but especialcomer c50. No single tuning variable makes more difference in the performance of the Comer C-50 and C-51 engine than getting the carburetor tuned just right. Bergfelt Racing Enterprises Kid Kart Page Kid Kart Tech Tip Tuning the SHA Dellorto Carburetor Found on Comer C-50 and C-51 Engines.It may be found that (with the High-Speed Needle Valve now set for optimum full-throttle performance) hovering will reveal symptoms of slightly lean running at medium speeds. Now re-check hovering performance. These basics should significantly improve the tuning you do throughout the weekend so your jetting is perfect for the main event.tuning the Idle Mixture Control Screw, if necessary, to perfect the idle. There are some basics we can share. Kid Kart carbs and tuning tend to be the weakness of most teams.Dyno Tuning & break-in - 100.00 TAG 150.00. Engine Break-in only - 75.00. Yamaha or KPV upper end rebuild & true crank assembly - 240.00 plus parts.
And I will cover all of these things in detail below: Here is what you do need to worry about. Don't worry about any of this. You'll read all sorts of internet lore about tilting it one way or another, or spacing it off the engine on the manifold a quarter inch or so, etc. Tuning it consists of changing the jets and that is about it. If these basics are covered and it is acting funny there are a few things to look for. Don't be this tuner!If you have covered these basics then there really isn't much more you can do for the carb. Have it secured - so many people forget to tighten the retaining bolt and the carb falls off. Jet it properly - we'll discuss this in detail below, but make sure you have an appropriate jet for the conditions It is a good idea to take it apart and clean it before every important session like qualifying, heat races and finals. Download ds emulator for macThis is a good item to replace regularly. The float needle can form a ridge after a while (like a month) and stop working correctly. The other common reason that makes a carb not work is a bad float needle. Make sure your vent is working. Remove the fuel line, then pull off the carb. Remove your K&N Filter, loosen the carb retaining bolt, remove the two screws holding the black throttle cable/slider assembly to the top and remove the assembly. Turn off your fuel shutoff valve. If you carb still doesn't work after all this it may be time to retire that carb for the weekend and send it off to an expert.Carb Cleaning - Cleaning Comer carb is a simple 10 minute task. Finally, you can remove the fuel inlet cap to expose the filter screen under it, and remove the filter screen. Next you can remove the jet. Now pull the white float, and float needle out. Use something small like the end of a paperclip to slide that out. You'll see a little pin holding the white float in place. Next you will remove the two screws holding the black bowl at the bottom. We see people every year breaking carbs from being overtightened. When you put the carb back on the manifold tighten the retaining bolt just enough so that the carb is very hard to twist on the manifold, but you still should be able to twist it. Using brake cleaner (easier on plastic than carb cleaner) and air you can begin by blasting out every orifice in the carb with brake cleaner then blasting it clean with air, then doing the same to each part as you reassemble the carb. ![]() 60mm, and these will be your jets. So order these size Pin Gauges from McMaster:Now you can measure jets until you find jets that fit your pins from. Whatever is left are your legal jets. You can throw away any jet you have that this Pin Gauge will poke through. So according to the rules you can use a 60 size jet, and actually a large 60 that is just a but smaller than 61. Activation serial key cx oneAir Density takes into account temperature, pressure, and humidity. This is all great but there is only one true measurement that takes everything into account and is a consistent means by which to tune. Some by temp, some by humidity, some people just say "the air feels heavy today". Now, how do you use them?Tuners like to monitor all sorts of environmental factors when evaluating which jet to use. The jets you now have in your PKT holder are all you'll ever need. But all you need to know is that you can use Density Altitude to pick the right jet. The effectiveness and simplicity of the Density Altitude usage with jets is so simple it is actually hard to explain. Of course on top of a mountain you would use a very lean jet. So you may be standing at sea level, but if it is very hot and very humid, with low pressure, then the air is actual similar to the air you might be in if you were on top of a mountain. Density Altitude is the equivalent altitude you are in right now. For Kid Karts this will be one of the most important tools in your tool box.K&N Filter Cleaning - The K&N Filter needs to have as little restriction as possible. But otherwise once you make your chart based on your own testing, and use Density Altitude you should be almost right on the money every time with jetting.So how do you get "Density Altitude"? With the Kestrel Racing Weather Gauge. A track with elevation changes may need to be jetted a little rich to get up the hills better. The main one is track type. You'll want it bone dry come race day. Then use an air nozzle to dry it out. Clean the inside and the outside. The carb is one of the parts of your kart that should get the most attention between sessions.
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