Increased engine VAZ

The increase in the engine car is the easiest way to raise its power characteristics. Increased engine VAZ 21083, as well as its derivatives, which include the VAZ 2111, 2112 (as they used almost the identical engine blocks) can be achieved in several ways. The only exception is a 16-valve engines VAZ 2112. The first way is more "popular" option - it is squandered by a piston cylinder of larger diameter. You spend money on boring the block, buy a set of new pistons and rings with large diameter. Another, more expensive, way to act replacing the crankshaft on the other, in which the radius of the crank is more, respectively, greater and greater stroke volume. You spend on the crankshaft, in which the diameter of the crank is 80 mm, set of pistons that fit this shaft (engine block has a certain height above which the rise will not work), piston rings, and payment of work on the bore of the unit under a given set of installation of the pistons. How would it not sound surprising, but it bore the engine - it's not the most profitable way of speeding up the engine, sometimes (it depends on what you want from the engine) would be advantageous to produce a revision of the cylinder head with a tail installing the camshaft, which would fit you. After that you can "shoot" more power from your power plant. Clearly, when the possibility of the camshaft will be fully disclosed, it will be necessary to finalize the cylinder head - is often the work would be pretty serious, it can result in the installation of larger diameter valves (in an 8-valve engines are good valves from BMW, and a 16-valve - on Opel) and perepressovku saddles. Do not forget about the exhaust and intake valves, which facilitate the transmission of air-fuel mixture in the engine cylinders. The exhaust gases are emitted already at a higher speed, the valves in this case it is necessary to refine and increase their cross section to some extent by internal polishing and change their profile. In addition to the cylinder head rather large effect on the motor have a "geometry" and the contents of the cylinder. You can discuss the different types of pigs, their weights, the shape of crank shafts, but they undoubtedly contribute greatly to the character of the engine. There is such a thing as the ratio of stroke to the length of the rod, this characteristic, like himself, the diameter of the crank crankshaft is very noticeable effect on engine performance: engine at its core - is like a pump, which is pumped through a certain amount of mixture of fuel and air for a certain time gap. The effect of a large R / S: I would like to lead at this point the arguments both for and against. FOR. This allows the piston to be as long as possible in the TDC, which will provide the best burning fuel that is complete combustion of the fuel mixture. Higher pressure exerted on the plunger after passing TDC - the higher the temperature, which burns fuel in a combustion chamber. Resulting in a pretty good torque at high and medium speed. If you have a long rod, the friction pair "piston-cylinder" will diminish, and it is very important when working piston. VS. In the motor, which was built with a sufficiently large value of R / S, good filling of the cylinders are often not provided, especially at medium and low speeds HF, because it reduces the air flow rate (since the velocity of the piston after TDC reduced after opening air valve). As the temperature becomes higher, there is a high probability of detonation in the combustion chamber when the piston is a long time in TDC. The effect of small R / S: Also consider the pros and cons. FOR. Providing a very good rate of filling the cylinders at medium and low speeds. This is because the velocity of the piston from TDC more increases faster discharge that contributes to a better filling of the cylinders. The rate of filling of cylinders is higher, which contributes to a more uniform combustion. Benefits include also the lower requirements for completion and diameter valve cylinder head, unlike a motor with a high ratio of R / S. VS. When the value of RS small, it means that the angle of the rod more. Accordingly, a large force will push the piston in the horizontal direction. This has the following effects on the motor: The rod is a big load (especially at the center), this leads to the fact that the destruction of the rod may be very likely. In itself, the destruction of the rod is very rare, except when he breaks off with hammer or jamming. Often, the connecting rod breaks at the bottom or top of the head by ~ 45 degree angle to the axis of the rod. Increases the load on the cylinder walls, there is a big load on the rings and pistons. Operating temperature due to increased friction increases, the result is a more rapid wear of rings, cylinder walls, deteriorating conditions of lubrication. Depreciation of the plot depends on the amount by which shifted the axis of the finger relative to the piston, and the wear affects the maximum angle of inclination of the connecting rod. Therefore, if we use forged pistons with offset finger, then the depreciation will be lower than with standard pistons. If the rod shorter, the rate of piston movement is greatly increased, it naturally leads to rapid wear. At low speed to accelerate positive affect filling of cylinders. For obvious reasons, AvtoVAZ has staffed its engines connecting rod 121 mm, it provides 83-th motor R / S = 1,7 is pretty good for Soviet vehicles. However, for the Tuned Car this ratio is not good enough. Therefore, with increased engine VAZ must consider all these nuances, and choose the option that is more suitable for you.