Motor Magazine
Reprinted the article published in April 1989.
■ March Super Turbo
MARCH SUPER TURBO
Valentine to give to full throttle BOY
Equipped with the first domestically produced turbo + supercharger
March R is the base of rally competition cars.
However, taking the opportunity of Maichen in January, it is a road version.
A super turbo was added vividly. What is the power of the fastest liter car?
The engine of the March Super Turbo is equipped with the same MA09ERT as the March R.
Despite the displacement of 930cc, it is 110ps, 13.3kgm by the first domestically produced twin charger.
The maximum output and maximum torque are obtained. This system is a supercharger and turbo
Two chargers are placed in series, and the S / C supercharges up to over 4000 rpm.
Above that, T / C is in charge. In other words, in the S / C supercharging area
The intake air that has passed through the T / C is supercharged, and when it enters the supercharged area of the T / C, it has passed through the S / C.
When the intake air is supercharged and the T / C supercharge area is entered, the S / C is bypassed and the intercooler is used.
It is supposed to be sent. Naturally, in the rotation range where the T / C is fully charged,
Since S / C drive loss occurs, its operation is released by an electromagnetic clutch.
By the following, a large torque can be obtained by S / C in the low and middle rpm range.
A large output can be obtained by dedicating the T / C to high rpm. T / C is the same as MA10ET
Although it is a turbo unit, both the impeller and rotor are larger. Supercharging pressure
It has been increased from 400mmHg to 700mmHg and changed to a high-speed type.
Conventionally, the original merit of the turbo is due to consideration for the low and middle rpm range.
Although it was not fully utilized, the performance of T / C can be improved by combining it with S / C.
I was able to demonstrate it without any problems.
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The appearance of "how things". Acceleration goes straight to red even with a wide ratio
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It is a super turbo equipped with the same unit as March R, but to the last
Only the catalog model for general use, the image received from the appearance
It's very different. In contrast to the March R, which was so simple
The front and rear bumpers have been enlarged, and side skirts and rear spoilers are standard equipment.
In addition, the front grille has undergone a drastic design change, making it a hall type.
It is a full cover type with an arrangement of air ducts and fog lamps.
The main cooling air duct is laid out in the bumper part,
It is sent to the intercooler from the power bulge of the bonnet.
In addition to these powerful designs, the minimum ground clearance is March R
Compared to 155mm (normal is 165mm), it has been reduced to 120mm.
If the March R is a rally car, the Super Turbo will have a lower ride height,
It can be said that it was born under the image of a racing car.
In the interior, the seat is a full support type, and the steering is also wrapped in genuine leather.
Uses a small diameter type. Also, in the center of the upper part of the dashboard, there is a triple meter like the March R.
It has been placed.
The mission is available in 5-speed MT and 3-speed AT, but the 5-speed manual MT gear ratio is
It is the same as the conventional turbo model, but different from the R cross ratio. Final ratio
Has been raised to 4.167 compared to 4.353 of R, and the total ratio is almost the same as 1st gear.
Wide between 1st, 2nd and 3rd gear. It can be seen that the 5th speed is swayed to a high speed type of 3.150 compared to 3.525 of R.
Therefore, the meter reading can cover up to 1st gear 55km / h, 2nd gear 95km / h, and 3rd gear 110km / h.
It has a very wide range of defense. Therefore of the speedometer
The full scale of 180km / h is so familiar that you can't think of it as a liter car.
If you have a straight, you can mark it enough.
The MA09ERT engine, which has a bottom power that does not match the wide ratio, has a red zone of 6300 rpm.
However, it easily rotates up to 7000 rpm where the rev limiter works. This was previously the March R
500rpm from the engine for dynamite cup racing, which was the development base
It is higher than that, and the increase in power is clearly higher. Race specifications without using a device
That's right compared to the Intercooler added from March R
It can be said that the merit is very large.
Moreover, the torque feeling is wider like the March R, and the rotation is smooth.
The pickup is a little rough, and I get the impression that the rotation drops slowly, but it is easy to handle in the practical range.
I like it in that respect. When full throttle is given, it will be handed over to T / C
There is no sense of discomfort, the rotation rises efficiently, and the power drops to around 6500 rpm.
do not feel.
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The brakes are also powerful and unrivaled. The feeling of bending with a viscous LSD is a favorite of experts.
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The torque and power are perfect in winding, so the momentum is tremendous.
It keeps accelerating, and I hardly notice the uphill road. Only for lightweight models
There is a difference in the feeling of acceleration with a full ride, but first with one or two passengers
It wouldn't be a 1.6 liter class enemy.
On the other hand, in the downhill, expect engine braking in the T / C operating range.
It is not possible to do so, and the degree of request for foot brakes increases. Moreover, shift down
After that, there is a torque valley around 4000 rpm in the pickup, and in that high rpm range.
The load on the brakes is heavy. However, despite overuse for a long time, it fades
There is no change in the touch, and the high braking performance is remarkable.
Handling is due to the setting that holds down the roll and the front viscous LSD
Has a maniac taste. The good turning performance in the minute angle control is the race specification that I got on before
The kickback to the steering is also large. Tires are Potenza RE88 ・
Although it is 175 / 65R13, the very early rise is slightly suppressed,
Trying to maximize cornering performance with a small rudder angle.
However, because the absolute grip power is low, it begins to lose grip power little by little from there,
The viscous LSD is a size that exerts its power and gives traction again.
The tail does not start to slip, and it always kicks back with strong traction.
Put on the line while fighting. A car that receives such a hard favorite crot
March Super Turbo.
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