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# How Much Is A Rear Differential

When you’re shopping for a car, one of the most important decisions you have to make is the type of drivetrain your vehicle will have. This includes everything from the type of engine to the gearbox. If you’re in the market for a new car, you may be wondering what a rear differential is and whether or not it’s important. In this blog post, we will explore this question and provide a detailed answer. ###

## Rear Differentials Explained

Rear differentials are a type of differential that allow a vehicle to rotate around its center of mass while maintaining traction. They’re used in both cars and trucks, and their main purpose is to distribute the load evenly across the rear axle, which can help improve handling and stability. Rear differentials typically have two parts: the ring gear and the carrier. The ring gear is attached to the axle, while the carrier is attached to the differential housing. The two parts work together to create a rotating friction disk between them that provides torque multiplication when you drive in a straight line. When you turn, this disk causes the vehicle to rotate around its center of mass, which keeps it from spinning out or losing traction.

## Types of Rear Differentials

There are three types of rear differentials: limited slip, locker, and open.

Limited Slip Differential (LSD): LSDs are a type of differential that uses a gear to speed up or slow down the rotation of the wheel inside the differential. This allows the vehicle to stay in its lane on slippery surfaces or when going around curves. LSDs usually have two gears, but some models have four gears.

Locker Differential (LD): LDs use a torque converter to convert rotational motion into linear motion. This allows the wheel to spin faster than the axle would if it were connected directly to the engine. LDs usually have three gears, but some have four gears.

Open Differential (OD): ODs do not use any gears; they simply allow one wheel to rotate more slowly than the other. ODs are used on vehicles that need extra traction, such as off-roaders or racing cars.

## How to Choose the Right Rear Differential for Your Vehicle

Differentials are one of the most important parts of your car’s drivetrain. Without a proper differential, your car will not be able to turn as sharply or go as fast. Differentials also allow you to change the torque distribution between the front and rear wheels, which is essential for traction and overall performance.

Here are some factors to consider when choosing a Rear Differential:

1) Torque Distribution: A differential that evenly distributes torque between the front and rear wheels is crucial for handling and cornering. A good differential should have an even split of torque so that both wheels can work in unison at all times.

2) Performance: Look for a differential with high performance ratings if you plan to use your car in spirited driving conditions or during off-road racing. Differentials with high performance ratings can withstand higher levels of torque and provide better cornering and acceleration than those with lower ratings.

3) Cost: Don’t spend too much money on a differential just because it has high performance ratings; instead, focus on finding one that offers good value for your money. A less expensive differential may still provide good performance, but it may not have the same durability or build quality as a more expensive option.

## Installation of a Rear Differential

A rear differential transfers power from the engine to the rear wheels. Typical applications for a rear differential include car racing, off-road driving, and rallying. Rear differentials are usually paired with a limited-slip differential in the front, to allow for more torque to be sent to the wheel with the most traction.

Rear differentials can be installed in a number of ways. The simplest option is to remove the axle from the car and replace it with a separate rear output shaft and drive shaft. This method is typically used on race cars and off-road vehicles that need to keep weight balanced between the front and rear axle assemblies. Another option is to use a set of universal joints that connect the axle shafts together. This installation is common on street cars that need better handling but don’t require a high level of performance or durability.

## Testing and Maintaining a Rear Differential

A rear differential is a gearbox-mounted device that allows a car to rotate around two axes, typically the longitudinal (front-to-rear) and transverse (side-to-side) directions. Rear differentials are essential for stability in high-speed driving and often allow the car to rotate more rapidly and smoothly than if the engine and other wheels were powering all four corners of the vehicle.

Rear differentials can also be used to transfer power from the engine to either the rear or front wheels, allowing for improved traction in poor weather or on slippery surfaces. In most vehicles, a rear differential must be properly maintained in order to ensure optimal performance. Proper maintenance includes regular inspection and adjustment of gears, seals, bearings, and fluid levels.