How tough is the Torsen diff. ?
In 2002 the Torsen was standard equipment on the Ranger FX4. Shortly after I took delivery of mine Ford issued a recall on all Ranger FX4s and replaced the entire rear axle assembly. Their reason was that parts of the Torsen had not been properly heat treated. There was at least one incident of an owner breaking the differential in his truck and they traced it back to that. Ironically, I belonged to the message board at offroadrangers.com at the time and the owner of that truck was also a member. As a matter of fact he, myself and Sean Holman who now writes for one of the off-road truck mags all belonged to that forum and we all bought the same color 02 Ranger FX4s at about the same time.
Other than that, the truck was great and had amazing off-road traction. It would go places in two-wheel drive that other trucks I have owned would barely make in 4x4. The Torsen used in the FX4 was a cone type differential and as such did not exhibit the same quirky on-road behavior as say the Detroit Locker I have in my 75 Bronco. I also owned a 69 Boss 429 years ago and it also had a Detroit Locker. It could be a handful when trying to accelerate hard out of a corner as the diff would ratchet and cause the car to skip sideways.
Other than that, the truck was great and had amazing off-road traction. It would go places in two-wheel drive that other trucks I have owned would barely make in 4x4. The Torsen used in the FX4 was a cone type differential and as such did not exhibit the same quirky on-road behavior as say the Detroit Locker I have in my 75 Bronco. I also owned a 69 Boss 429 years ago and it also had a Detroit Locker. It could be a handful when trying to accelerate hard out of a corner as the diff would ratchet and cause the car to skip sideways.
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