You need to redo it wisely
You can find a lot of materials on this topic on the Internet. But they should be treated with great caution. Some recommendations openly contradict common sense; the result of other alterations may be unpredictable. Let's try to help with advice to those who decided to do the tuning of Jupiter 5 with their own hands.
There are several directions for making changes to the design of the popular model:
- Correction of the appearance of the motorcycle.
- Modification or alteration of the suspension.
- Engine tuning.
Let's consider each of them separately.
Tuned exhaust system (resonator with muffler) DD for snowmobile BURAN
Produced since 2009. A customized exhaust system created specifically for the Buran snowmobile with the RMZ-640 engine. Due to an optimally designed resonator, engine power increases by 10-11 hp. Due to a properly designed resonator complex with two mufflers as a whole, the noise level of Buran is reduced many times over. The entire kit is designed to completely change the exhaust tract to achieve maximum results in all respects. Also includes an upgraded exhaust manifold that ensures exhaust flows properly and into the resonator. All together gives a result confirmed by a large number of users: increased power, multiple noise reduction, reduced fuel consumption by at least 10%, increased engine life. There is a patent for the development.
You can place an order using the order form
Exhaust systems for Buran model 2017-2018
With improved noise characteristics and still a guaranteed increase in power from the very press of the throttle trigger to the limit. Manufactured with modifications to the exhaust gases of the muffler to the standard location, to the right through the hood and to the right behind the hood. They are distinguished by reduced exhaust noise to a level lower than imported equipment and the absence of vibrations in the Buran frame when modifying the outlet through the hood. They differ from systems of previous years by a modified muffler and resonator.
Reliable and powerful snowmobile. Quiet engine operation while hunting or just on a trip... The dream of every hunter and snowmobiler. How to do this on one of the most convenient snowmobiles for hunting, Buran?
How can you do without deep modifications and bulkheads and with a minimum of time and money?
There is a solution and it was invented more than 60 years ago. But it has always been considered difficult to manufacture and develop, as evidenced by the rather high prices for exhaust of imported and domestic snowmobiles. Everyone has seen a kind of exhaust system on modern two-stroke engines and how this equipment drives... All modern domestic and imported snowmobiles are equipped with an exhaust system with a resonator. The photo shows some of the most popular two-stroke snowmobiles (Taiga, Yamaha, Arctic Cat) and all of them with resonant exhaust systems, the peculiarity of which is the presence of a complexly curved pipe of variable cross-section with an infusor and a confuser in front of the muffler. Without exception, all modern snowmobiles with two-stroke engines are equipped with similar mufflers.
We have developed and are producing a customized DD exhaust system with a resonator specifically for Buran. Since we ourselves are fond of hunting and wanted to get the quiet and powerful single-ski snowmobile we needed, which is indispensable for other equipment, especially in the forest.
The resonator and muffler play one of the most important roles on two-stroke engines, more than just a device for reducing exhaust noise. The principle of operation of the resonator is based on preventing the ejection of the fuel mixture during purging and returning useful fuel to the combustion chamber.
In the exhaust phase, gases rush through the exhaust pipe into a straight cone, where they expand, their speed and pressure decrease. Having passed the cylindrical part of the resonator, part of the gases passes into the exhaust pipe and then into the muffler. Another part of the gases, reflected from the reverse cone, approaches the outlet window and “locks” it at the moment the purge windows open (and they always open later than the outlet window). Thus, due to this geometry of the “resonance pipe”, a standing wave (resonance) is formed at certain speeds, which ensures the best operating mode of the engine when the ejected fuel-air mixture returns back to the combustion chamber. At the same time, the power increases by more than 30% compared to a two-stroke engine not equipped with a resonator, which is quite a lot.
The standard muffler of a Buran snowmobile does not allow full use of the engine resource due to the lack of a resonator in the original exhaust system.
Hello Sergey! I received a pipe from you in October, the season is over, now I have something to share. Buran is short, 4-channel engine, Minkui carburetor made in China, Safari variator (d-210) judging by the price, also made in China (brought up to standard). Like probably all the purchasers of this product, I am 100% satisfied with your product. I immediately felt an increase in traction and throttle response, climbs that I had previously avoided were now boldly almost head-on, to the envy of my comrades. In general, as one of my friends said, it walks and jumps no worse than a foreign car. On the winter road, with a belt from Tiksi, 80 in the light, you can do more (there is still a third of gas left), but it’s scary, it’s still a Buran. About the sound: the fact that it is much quieter is a fact. External comparison, when driving through the forest of Taiga and Buran with a tuned resolution, Taiga is heard first and then Buran.
You can place an order using the order form
Correction of motorcycle appearance
Changing your appearance can happen in different ways. Among the most common:
- Fairing installation.
- Replacing the fuel tank.
- Seat modification.
- Motorcycle painting.
Fairing installation. This is the first thing that many lovers of modifying the appearance of motorcycles undertake. Although it is possible to cope with such a task, it should be recognized that the development of such components is a complex task that requires specific skills. The enterprises employ entire groups of specialists engaged in the design of fairings.
Previously, plaza development methods were used for this, but today automatic design systems are used. Finished parts are blown in wind tunnels so that their behavior in air flow can be assessed.
A person who does not have specific skills, despite all his talents, will most likely receive a result of dubious quality. The surface of the fairing will be uneven, which is clearly visible in the 5 photos posted online illustrating Jupiter tuning. The aerodynamics of the motorcycle may not improve, but worsen. Take all this into account before you decide to start making and installing a fairing.
Replacing the fuel tank is a completely justified decision. But you shouldn’t try to make a complex part yourself. This is not an easy task even for enterprises with special technological equipment. It’s smarter and easier to choose a ready-made fuel tank from some other motorcycle model.
Seat modification. You can try to make a change to the standard structure by upholstering it with a new material like leather or a good substitute, and installing a new filler. But the original seat has a significant mass. To reduce the weight of the motorcycle, it makes sense, as in the case of the fuel tank, to select a part from other equipment.
Painting IZ Jupiter-5 is a good thing. Here you can let your imagination run wild. But the best results can be achieved if you know the laws of color combinations or consult with a professional designer. Otherwise, instead of a stylish combination of contrasting colors, you can end up with an eye-catching color scheme.
If you are interested in long-lasting paintwork, first apply a layer of high-quality primer and refuse to use nitro paint, preferring alkyd or polyurethane enamels.
How to make a forward flow on a motorcycle with your own hands?
How to make a forward flow on a motorcycle with your own hands?
Every self-respecting motorcyclist spends a lot of time and effort on improving his own machine. By increasing the engine's capabilities and improving the performance of the tank, attention eventually turns to the exhaust system. A brand new direct flow on a motorcycle, installed with your own hands, will delight the driver’s eyes and ears. The modernized exhaust system on motorcycles looks much more stylish and aesthetically pleasing, and the loud sound makes the bike noticeable on the road and helps to avoid unpleasant situations.
What is forward flow?
A cocurrent is a design for moving liquids and gases in a single direction. From the factory, the motorcycle comes with a standardized exhaust system, but subsequently customizing the bike and increasing its power from the original configuration is no longer enough - the amount of exhaust gases increases. Specialists install a direct-flow system, visually and technically improving your motorcycle (power will increase by 3 - 5 horsepower), but it is much more pleasant to do it yourself. This task will not require much time, the materials are quite accessible, all that remains is to arm yourself with information.
How to make a muffler for a motorcycle?
· Unscrew the mounting bolts and remove the old factory muffler.
· Pull out the standard internals - tubes and other offal.
· Buy a thin-walled tube or make it yourself from scrap garage materials. Stainless steel or aluminum without defects are the best option. Furrows, chips and holes will give the direct flow an unpleasant metallic noise, and incorrect tube dimensions will impede gas exhaust. Be careful when creating a muffler for a motorcycle with your own hands: maintenance requirements must not be violated.
· The outer shell of the muffler and the thin inner tube differ significantly in volume; it is recommended to tightly fill the gap between them with glass wool - this will help reduce noise. The risk of glass wool catching fire is minimized by wrapping the tube with a fire-resistant substance or asbestos.
· Using fasteners, we attach the muffler back to the motorcycle, cover the exhaust part with a lid and check the result of our manual work. When the bike starts, you should hear a slight bass tone. If you want more expressive effects in the sound of the forward flow, there is another way to create a muffler, which we will discuss later.
How to create a sonorous forward flow on a motorcycle with your own hands?
· There are a large number of varieties of forward flow: some enhance power, others improve sound, the third category of forward flow gives a double result.
· The essence of the work of high-quality direct flow is to manage gases and liquids in a motor-heat exchanger, directing the substances blocked by the wall in a single direction.
· Having conceived your own direct flow project, be sure to check out the videos of workshops posted online. If you have experience and engineering thinking, you can experiment and invent new types of direct flows.
· A welding machine and an angle grinder will help you make a unique muffler for a motorcycle with your own hands. To do this, we buy sheet stainless steel, roll it into a pipe, fastening the individual elements with argon arc welding. The inner tube is made in the same way, only with a smaller diameter, and many small holes are first drilled in the steel sheet. At the final stage, the end caps are attached.
· The further process is reminiscent of replacing the original muffler with a homemade one. They fill it with glass wool and cover it with asbestos. It is necessary to fill the space between the shell and the tube more tightly, then vibration and noise during driving will be less.
· Some specialists convert car mufflers to motorcycle ones, how do they do this and what does it give? The only difference is the excellent motorcycle and auto mounts, which can be corrected with a welding machine. The seams are covered with chrome paint. The output is a stylish, velvety direct-flow sound and increased power levels. A pleasant bonus is job satisfaction and tangible cost savings.
Source
Refinement and modification of suspension
The original suspension of the IZH Jupiter-5 motorcycle is reliable and has good maintainability. It is not difficult to restore it, but better results can be obtained by making some changes to the design.
Installation of adjustable gas shock absorbers. Today on sale it is not difficult to find gas shock absorbers with suitable parameters that can be used in the design of the rear suspension for tuning IZ Jupiter-5. Ideally, you can improve ride comfort and improve the stability of the car on the highway.
Replacing the front fork. This is also possible, but most likely will require reworking its fastening.
Installing another handlebar is not prohibited if it does not worsen the ergonomics of the rider's seat.
Drawing of a resonator for Izh Jupiter/Planet motorcycles
(Jupiter is the average size, for the planet it is the maximum)
I read earlier on the Internet that the resonator for the P5 engine (one-pipe design) is very long and awkward.
Today at work during a smoke break I came across a program for Android (I use a tablet) to calculate the resonator for a 2T motor. The program contains four calculation methods - Grigoriev, Voitenko, Blair and complex. I calculated using a complex method.
I’ll say right away that the calculation is carried out according to the purge and exhaust phases. I have modified, seriously modified valve timing; these drawings will not work at all on a stock engine.
I wanted something like this: a resonator, but of short length, and maximum output at low speeds (3-4.5 thousand) because installing a huge pipe doesn’t fit the style, I don’t want to run it under the frame; I plan to use it not only on asphalt. I will say that my wishes regarding the short exhaust were dashed by calculations.
Engine tuning
The two-cylinder two-stroke engine with a working volume of 347.6 cubic meters was installed on the motorcycle. see most often has air cooling. The number of models released in recent years of production that used liquid cooling is negligible. The power that the engine develops is 24 hp. With. – can be increased by making some simple modifications:
- Increase the compression ratio by removing about 1.5 mm from the adjacent plane of the block head. But this will require switching to fuel with an octane rating of AI-95 and making changes to the design of the crank mechanism. First of all, replacing the crankshaft bearings. You will also have to select spark plugs with a different heat rating.
- Replacing crankshaft bearings. There is an opinion that only high-quality imported bearings can cope with increased loads. In fact, domestic developers have installed bearings with a large margin of safety. If you manage to purchase high-quality Russian analogues, they will do the job perfectly. Trying to change the size of the crankshaft journals is simply harmful. The thickness of their hardening layer is small and when more than 1 mm is removed from the surface of the journal, the service life of the part will sharply decrease.
- Replacement or modification of pistons. The stock parts aren't that bad. Don't rush to look for a replacement for them. To increase power, it will be enough to lighten the pistons by removing casting flash and excess material from them. Parts should be carefully adjusted according to weight. It is desirable that the difference does not exceed hundredths of a gram. Such simple engine tuning will be more effective than installing a zero-resistance air filter or a direct-flow muffler. Although it is, of course, possible to install forward flow on IZ Jupiter-5.
- Installing another carburetor. If possible, it's worth shelling out for a good Mikuni carburetor. Don't go for a large diffuser size. The standard diameter of 32 mm will be quite sufficient. But it’s definitely worth removing the protrusions on the intake and exhaust manifolds and polishing the internal channels of these parts. This will not only provide an increase in power, but will also help reduce fuel consumption below five liters.
- Replacement of the ignition system. Installing BSZ on IZ Jupiter-5 only makes sense if you intend to use imported components. Most likely, the quality of domestic components will reduce all the advantages of the contactless ignition system to zero and the rework will not give the desired result.
Do not forget that increased power will improve the acceleration dynamics of the motorcycle, but will not provide a significant increase in speed. To increase speed, you will have to change the transmission gear ratios, selecting different sprockets for the gearbox and rear wheel.
Muffler for snowmobile Buran DD
The muffler is suitable for snowmobiles Irbis, Shikhan, Buran . Those. for all snowmobiles with Rybinsk engines YaMZ, RMZ.
This muffler for a Buran type snowmobile works as a RESONATOR or a tuned exhaust system. And thanks to a specially designed muffler design, it increases the power output of the Buran snowmobile by 30%, promotes afterburning of the fuel mixture and reduces the caustic two-stroke exhaust by 50%. The sound of the Buran snowmobile no longer strains the ears, because... The noise level of a snowmobile with a DD muffler is reduced by more than half.
Thanks to better gasoline combustion, you will save on fuel and the cost of the installed muffler will pay off.
Not tuning, but restoration
However, modernization is not the only way for owners of the popular model. After all, the age of many motorcycles has already exceeded two decades, which means that they can already be classified as rare. Restoring IZ Jupiter-5, restoring it and bringing it to its original state is also quite justified.
A legendary motorcycle that looks like it just rolled off the assembly line yesterday will attract no less attention than the tuned version. It’s just that how to properly restore equipment by performing qualified repairs often turns out to be much more difficult than remodeling it to your taste.
Independent work
Making a motorcycle muffler can be quite simple, but will it fully meet the requirements for it? Get ready for the fact that the first product you make with your own hands will require certain modifications and many hours of adjustments. However, practice shows that the second or third time it is possible to make a muffler for a motorcycle that initially meets all the required parameters. Sometimes it happens that it is not possible to make the required muffler for a motorcycle at all - this may be due to a lack of experience or certain design features of the equipment. In this case, it is better to buy a finished product from a well-known manufacturer or order the production of a direct flow from a real professional.
Are there any advantages to direct flow?
Why are some motorcyclists desperate to turn up the volume on their steed? Their classic argument: “Loud exhaust saves lives.” This argument works in occasional situations that are typical on our roads, but there is no scientific evidence of the benefits of loud exhaust in avoiding accidents.
Moreover, this argument presupposes the correct behavior of road users when they hear a motorcycle roar. But this is an extremely risky assumption: the driver may be frightened by a loud roar next to him and behave completely differently from what is expected of him, which can be dangerous for the motorcyclist. A loud exhaust may be noticeable, but it is unlikely to be a more effective means of preventing accidents than safe driving skills coupled with reflective elements on equipment and a mandatory helmet on the head.
Even if the "loud exhaust saves lives" argument works in some situations, it doesn't do enough to compensate for the unpleasantness of it. To be honest, many motorcyclists use forward flow to attract attention and show off their own “coolness”, without caring about their safety or those around them.
This justification for using direct flow is too selfish, don’t you think? On one side of the scale is the joy of motorcyclists, on the other is the peace of those around them. Which of these is most important?
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Share22012-02-10 16:14:17
So much I want to say and so little time! It all started, as you already understood, with the modification of the manifold to an increased diameter of the pipe for better exhaust gases and reduced flow resistance. It was logical to continue the refinement and make a direct-flow muffler. Which is actually what I did the other day! Something like inspiration came to me. At first I began to develop the future concept in my head, but how often does it change during the work process! I wanted to find a seamless pipe without seams (this was the first snag). There weren’t many options until I saw an ordinary fire extinguisher at work. And then an idea appeared and began to develop rapidly in my head! Since the total length of the muffler, according to my calculations, should be at least 400 mm, and fire extinguishers with such a length are too thick, it was decided to take two small ones and make a completely assembled (dismountable) muffler. As I already said, two old unnecessary fire extinguishers were taken, the powder was released and the valves were unscrewed. Then they cut off the back parts. It looks like this:
What’s most interesting is that the muffler ITSELF will look like this:
Then you need to somehow make the ends on the muffler; for this, 6mm thick sheet metal was taken and two pancakes were cut out, which were then turned into flanges! Why such large holes, you ask? So that later you can safely insert tubes of DIFFERENT DIAMETERS. on both sides and fill with refractory material. The flanges will be tightly welded.
Pipes of different diameters will be inserted into these two jars! Why is this done, you ask? I want to achieve only low frequencies and get rid of high frequencies. A pipe with a diameter of 70mm will be installed at the outlet, and a pipe with a diameter of 40mm will be installed at the inlet to the muffler. The joint in the form of a narrow transition in the middle will cause a curvature of the flow of passing gases! The holes in the tubes will also be of different diameters. That's all for today.
