Authors The GP4 1991 Season Development Team. Filesize 192692 kb. Downloads 61667. The 1991 season set for Grand Prix 4 is the result of a project that was. GY6 Mods for 150cc Scooters Mod Kits for Gas Scooters Go Karts This page will look at ways to modify and increase the performance of gas scooter engines which. NCUEzTomqYc/hqdefault.jpg' alt='Gp4 Mod Install' title='Gp4 Mod Install' />Read this page to help you get your scooter to to performnace. This page will look at ways to modify and increase the performance of gas scooter engines which are now also being used in go karts. There are different specific engine designs used on these go karts and scooters, but the principles on this page will also apply to many different engines. A lot of scooters and go karts are powered by a 1. Honda GY6 scooter engine design. The GY6 engine with CVT continuously variable transmission has decent performance for its small 1. It surprising how well of a job a small 1. Of course, more power would always be nice, but. GY6 based 1. 50cc. Even so, mod kits for gas scooters and go karts are available, and other modifications can be made to increase performance further. The GY6 based engine found in these scooters and go karts is like most any other internal combustion engine in that it can benefit from some well directed modifications. Geometry Dash Pc Full'>Geometry Dash Pc Full. This is true of just about any mass produced engine which have compromises that are driven because of manufacturing restraints like time and cost. These compromises usually limit efficiency and performance potential of an engine. Increasing air flow through an engine is the goal. More air flow along with the appropriate amount of fuel will result in more power producing potential. With that idea in mind, lets look at some ways that the performance of scooter engines can be increased. Install a high flow air filter system. The stock airbox can be eliminated and a high flow air filter like a K N style or Uni foam filter can be used. For very dusty and dirty off road conditions on go kart applications, an oiled Uni foam filter is probably the best way to go. An intake tube can be made out of aluminum tubing, steel exhaust tubing, probably even PVC or other material that is the right size tube to match the air filter and carburetor intake diameters. A piece of radiator hose from an auto parts store can be used as a rubber connector between the carburetor and tubing. Just be sure to clamp everything together securely and make sure that there are no air leaks where dirt can enter your engine. The picture below shows a Uni filter installed along with a homemade intake tube on a go kart GY6 scooter engine. When using a foam air filter like a Uni or a fabric gauze filter like a K N style, be sure to apply plenty of the proper air filter oil. Without the oil, the foam or fabric filter media will NOT be effective in filtering out damaging dust and dirt particles and you could probably WILL wreck critical parts like piston rings and probably scuff and score the piston and cylinder bore. What good is it to increase power by modifying your engine or installing mod kits for gas scooters and go kart engines, and then quickly wreck your engine because of sucking in dirty air  You wont have much power with a worn out cylinder or rings. Worse yet, a worn engine will burn oil and if you dont keep an eye on your oil level, you can seize and fry the whole engine because of lack of lubrication. The moral of the story is simply dont neglect your air filter check and clean it frequently  2 Another way to increase the performance of a scooter engine is to increase exhaust flow. Stock mufflers can be cut open and gutted out, but beware that this can be loud. In addition, check to see if there is an aftermarket exhaust systems available for your particular go kart or scooter. There are mod kits for gas scooters that come with a high performance exhaust. Some stock scooter engine mufflers can be very restrictive and choke the ability of the engine to rid itself of exhaust gases and as a result prohibit the inflow of fresh airfuel mixture into the cylinder. As a result, a restrictive exhaust can severely limit the airflow through and engine. An exhaust system upgrade can yield a big improvement in performance as long as the additional flow is combined with properly tuned carburetor. Re jet your carburetor Modifying your scooter engine for additional airflow will NOT increase performance, UNLESS you have the appropriate amount of fuel to go along with it to produce more power. Depending on the modifications you make to your engine, you should probably look to re jet your carburetor with a main jet in the 1. GY6 1. 50 engines. Many of the GY6 scooter engines seem to use a Keihin style CV carburetor 2. It would probably be best for you to bring in your stock jet so it can be visually matched with the a new one that is the right style. Best to error on the rich side larger jet, because too small of a jet and you could run too lean and damage your engine. If someone were to put on a high flow intake filter and also a high flow exhaust, then youd probably want to look closer to the 1. Installation on MacOS. The Strawberry Bricks Guide To Progressive Rock Pdf more. Continue to install. Read and accept the license agreement. Select plugin formats to install. Change Location if you want to. CV carb on a 1. 50cc gy. Depending on elevation, a 1. You might want to buy a few different jet sizes and then experiment with what gives you the best performance. Read your spark plugs to see if you are running lean or rich under wide open throttle conditions. Just remember, that too lean of an airfuel mixture can increase engine temperatures and cause engine damage. If in doubt, err on the rich side with extra fuel to help avoid engine damage. Uutj5n00Cc/hqdefault.jpg' alt='Gp4 Mod Install' title='Gp4 Mod Install' />Eliminate automatic choke. Most of the GY6 scooter engines seem to come equipped with the Keihin style CV carburetor with automatic choke. In theory, this is a nice feature the choke turns on by itself when needed and then shuts itself off assuming it all works properly. Unfortunately, the automatic choke on these carbs seems to have a tendency to stick ON at times. As a result, the airfuel mixture will be way too rich. This KILLS performance. There are a few ways to deal with this. An epoxy such as JB Weld can be used or one of the epoxy putties commonly found in automotive stores. If you primarily drive in warm weather, then the choke may not be needed anyway. However, if you drive in cooler climates, then you may need a way to richen the mixture so that you can get your engine started easier. Getting a whole new carburetor with a manual choke is one idea. Some of the newer Dazon buggies go karts are supposed to come with a manual choke carb on their GY6 engine. Also, a Mikuni TM2. The TM2. 4 carburetor or other manual choke carbs also may require a spacer on the intake manifold to help the float bowl clear the engine shroud underneath. Another way to get fuel enrichment on a stock carb with choke removed is to add one of the plunger primers that are made for use on snowmobile or ultralight engines. This primer plunger can be pumped and squirt fuel into the intake and help with cold weather starting. A small 18 fitting needs to be added where the fuel is squirted into the carburetor or intake manifold. Also, a 18 hose needs to be added to supply fuel to the plunger primer. This supply line can be Ted off the main fuel line or fuel can be tapped off. Adding this plunger primer is not the easiest method but it does work, and allows the stock carb to be used in cold climates with auto choke eliminated. A more direct bolt in carb like found on some of the Dazon buggy GY6 engine may be the easier choice for these 1. Updates and information for Microsoft Office system, as made by Microsoft. XnView is an efficient multimedia viewer, browser and converter. Really simple to use Support of more than 500 image formats. No Adware, No Spyware. Cd Depois Da Guerra Oficina G3 on this page.