The Torsen differential is a type of limited-slip limited-slip worm differential. Like any other differential, it is designed to distribute torque between the drive wheels or between the drive axles. The name of the mechanism comes from the phrase Torque Sensing, which translates as “torque sensitive”. Let's consider the operating principle, main components, as well as the pros and cons of this transmission device of different generations.
Principle of operation
General view of the Torsen differential
Torsen is a worm-type limited-slip differential. This means that automatic differential locking occurs when there is a difference in torque on the body of the mechanical device and on the drive shaft. The differential itself consists of driven and driven worm gears, which are called “semi-axial” and “satellites”, respectively. The worm gear has one feature: it does not rotate from other gears, but it can itself rotate other gears. This property (wedging) allows the differential to be partially blocked.
Let's look at how the center worm differential works.
If the wheels of a car have good grip on the road surface and move smoothly, then the torque between the axles is distributed equally. With a sharp increase in torque, the drive worm gears try to start moving in the opposite direction. The driven gears are overloaded, the output shafts are blocked, and excess torque from the machine's engine is transferred to the other axle.
The inter-wheel self-locking worm differential is activated when one of the wheels slips. When slipping occurs, the torque on one wheel drops, Thorsen locks and transfers torque from the car engine to the other wheel. In this case, the blocking of the slipping wheel is partial, and the degree of blocking depends on how much the torque has decreased.
The Torsen limited-slip differential can redistribute the torque as much as possible up to a ratio of 7:1 (86%:14%).
Torsen T2 (Torsen type 2 - self-blocking differential) or a thing everyone really needs
In the meantime, I’m remembering what I did with the Lehus after the purchase, besides pressing the gas to the floor, I’ll write, as they call it here, a “huckster post.”
We get a “bolt-to-bolt” match with a Toyota GT86 or Subaru BRZ, and because of the short 4.1 pair, the car becomes a little faster from a standstill, and in general, it becomes like a bullet a little faster. Yes, the maximum speed is slightly limited, but since none of the normal people drive on public roads at maximum speed, I think this is really the best, I’m not afraid of this loud and technical word - tuning
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I looked for a very long time, but cheaper than 33,000 rubles. I couldn’t find it on the Internet, but suddenly a miracle happened. We ordered with a guy I didn’t know about the gearbox, we weren’t 100% sure that these were Thorsens until they arrived, and we took off the cover and put them on our cars. Everything works, now you are the king of drift and you feel the car very well. You just need to change the 2 original seals for the axle shafts and add oil, always with a prefix (in the case of Motul, a prefix LS) for self-blocks. First I filled it with standard RED LINE 75W90NS oil, there were vibrations, now everything is “like clockwork”. The volume is about 1.3-1.4 liters, changed at BM Performance
on Aviamotornaya, hello Andrey drool
Later we decided to carry this rare and necessary thing for people, I have already delivered it to two people in Moscow, I hope they will write here that they are already rolling and EVERYTHING IS FIRE. Then they brought 10 pieces, delivery TK Energia
700 rubles, in connection with which:
I’m selling used Torsen type 2 gearboxes from Europe with GT86 / BRZ, a pair of 4.1, from working cars, I have no idea about the mileage, but they look fresh (I even installed it worse for myself - rusty on the outside, but everything is ok on the inside). All torsens are from 2012, weight 33 kg. There are no guarantees, since no one gave them to me either.
Number of the new gearbox 41110-18021
assembled at a cost of 150,000+ rubles
