He rode a motorcycle and crashed the plane.

Chapter 535 535. Rotor King

"Now that we're all here, let's get started."

Wang Jianguo is also a resolute person. Maybe this is the professional characteristic of racing practitioners. As a sport where time and speed are intertwined, a slow personality is not suitable for this industry.

After hearing this, Xu Jia returned to the front yard of the repair shop and drove the Mazda RX7 to the warehouse at the back. There was also a lift and a full set of repair and modification tools. It was once prepared for the old drunkard's professional racing cars.

As soon as the Mazda RX7 was parked, Brother Niu and Wang Jianguo took the tools and began to disassemble it. They moved very quickly and the division of labor was clear, as if they had rehearsed it beforehand.

Seeing this scene, Xu Jia believed that the two of them were in a master-disciple relationship, because their techniques and disassembly sequence were the standard steps of a professional racing team, and Xu Jia was very familiar with this routine.

Just as the pinnacle of racing is F1, it can be said that the pinnacle of professional racing maintenance teams is also F1!

Anyone who has watched an F1 event will be shocked by the speed of the car pitting for refueling and tire change. Almost as soon as the car stopped, all four tires had been changed in about two seconds, and then the car Whistling away.

If you were distracted at this point in time, you might wonder whether all four tires were changed when the F1 car came into the pit just now. How could it be so fast?

This speed represents the precise cooperation of the F1 technician team. The maintenance team of more than people must be as precise as a clock.

Not to mention a single mistake in one's movement, even a slight delay of a few tenths of a second may lead to a chain reaction in the process connection, ultimately slowing down the exit time of the car.

It can even be said that watching an F1 car pit for tire changes is a kind of enjoyment, showing the ultimate beauty of human division of labor and collaboration!

The cooperation between Wang Jianguo and Brother Niu is naturally not that fast, but the orderly process steps are still very comfortable to watch. This is the result of professional standardization.

However, Xu Jia and Shen Zhi were not idle either. They were definitely not as good as professional technicians when disassembling the main frame, but for things like removing tires, it was not a big problem to share the handles.

In fact, even if he really had to repair the car, Xu Jia's level would be adequate, but his movements and efficiency would be much slower.

Normal disassembly and modification of a rally car takes a whole day, because the entire car needs to be dismantled into complete parts, and there are many welding processes, such as adding a roll cage to the frame.

After all, the Mazda RX7 is just a performance car. Coupled with the four-door layout and wheelbase, it is impossible for Xu Jia to modify it to the level of a rally car.

Therefore, compared with the modification of professional racing cars, the steps and complexity of modifying a performance car are much simpler. It only took less than two hours to disassemble it and it was time to change the power.

Many people who have bought a car or learned about it must have heard the term "three major parts of a car". The so-called three major parts of a car are the engine, gearbox and chassis.

Among them, the most direct feedback to drivers may be power, because even people who don't know much about cars will know the power difference between a supercar and a tractor when they step on the accelerator.

The reason why performance cars can be called "performance" is because the engine plays a crucial factor. Many people on the Internet like to talk about which car has awesome handling and high cornering limit. The results are hundreds of times. With an outstanding horsepower, I don’t know how the word control came about.

For the racing world, all control is based on power. If the basic conditions of the power system are not met, other modifications are nonsense.

According to Japan's Amamiya modification plan, the first step is to operate on the power system. After all, Mazda's original maximum 230P horsepower is no longer able to meet the power needs of this era.

Because the mechanical principles of rotary engines and piston engines are different, there are no components such as pistons, connecting rods, axles, valves, etc. Therefore, there are naturally no methods of forging and strengthening pistons and customizing connecting rods to squeeze the potential of the engine. Famous engine models such as Toyota Supra's 2JZ, Mitsubishi EVO's 4G63, GTR's RB26DETT, etc. are actually limited by Japan's "gentleman's agreement" in the 280s, and the off-site power is maintained at P.

However, these engines can also be modified just like the frame of a rally car, only the cylinder block is retained, and the rest can be wildly modified with customized parts, and then squeeze out thousands of terrifying horsepower.

But the rotary engine cannot do this, because its engine structure has only three moving parts, namely two rotors and an output shaft, and there are not so many parts to modify.

Moreover, the power mode of the rotary engine can actually be simply regarded as a triangular-shaped rotor, which is "hard-grinded" by turning in circles inside the engine cylinder. Once the metal structure is changed, the wear on the cylinder block or the rotor itself may be drastically increased, thereby damaging the engine.

You need to know the lifespan of a general piston engine. If it is maintained for a million kilometers, it will not be a big problem. The average lifespan of a rotary engine is 3 kilometers. Even if you are a father, the longest record is only 6 kilometers.

Without absolute professionalism and technology, changing the rotor structure itself is simply waiting to change the engine every day. Even Mazda itself failed to understand the rotary engine in the end and slowly disappeared into the long river of history.

Therefore, this time the power modification mainly starts from the turbine intake. By replacing the HKS mushroom head intake system and expanding the intake and exhaust ports, the intake and exhaust efficiency is improved, thereby improving the combustion thermal efficiency in disguised form and increasing the horsepower.

At present, the original horsepower is 230P, and Xu Jia’s goal is to change it to about 350P, which is almost the mainstream power level of high-end performance cars in the current era. Judging from Xu Jia's driving skills, at least the Mazda RX7's power system will no longer become a serious shortcoming.

After the power comes the suspension system, which is often referred to as the chassis of ordinary family cars. Most people's understanding of the chassis is whether the car spreads out when driving and whether it rolls greatly when cornering.

But for performance cars, the chassis will determine the speed and limit of cornering. Compared with the power system, which can be displayed simply and clearly with data, chassis adjustment is more like a "metaphysics" and requires a lot of technicians. Experience and skills.

The coilover shock absorber is from Subaru’s official brand CUSCO. This Japanese company has more than 30 years of modification experience, and has won numerous rally honors with Subaru Racing.

Wang Jianguo is the chief technician of the Volkswagen 222 team. As the strongest rally team in the country, these modified brands are no stranger to him. There are also tuning parameters provided by the Amamiya tuning program. These parameters are based on Amamiya tuning factory’s years of experience in competing in Japan’s larger GT events.

Therefore, the seemingly complicated chassis adjustment is actually not a problem for the current Xujia "team".

The last thing is the braking system. After all, if you want to run fast, you need to be able to stop. This time I chose a six-piston caliper from the Japanese modification giant T-DEMAND, and the brake disc was also replaced with a scored and perforated disc to ensure high-intensity braking. Rapid heat dissipation in the environment.

Other wheels and tires are necessary modifications, and there is basically nothing to say. Something worth mentioning is that the American version of the RX7 is originally equipped with an open differential lock. If you want to drift, you rely more on inertia.

The old drunkard didn't know if he wanted to relive the feeling of drifting in a rally, so he actually prepared a set of customized limited-slip differential locks, which made up for the final shortcoming of this RX7 in drifting.

Xu Jia came to Uncle Shen's repair shop in the morning and didn't even have time to eat lunch. When he finally installed the aerodynamic components such as the tail wing, the street lights outside were already on.

When the ignition is turned on, the RX7's iconic flip headlights pop out. There doesn't seem to be much difference in appearance. Xu Jia didn't get any fancy things like stickers and all-black wheels.

But after modification, the RX370FC has reached a horsepower of 7P. Even in the era of 2009, it can once again defend its title of "Rotor King"!

(End of this chapter)