Much to mine surprise, ns learned that transmission weight have the right to determine the way we go around working on our car, what we’re maybe to in reality do, shipping costs, performance, and more.

You are watching: How much does a car transmission weight

How much does a infection weigh? many transmissions usually weigh between 100 and 400 pounds (45 to 181 kg), back the form of auto can cause this number come be much higher.

The key to the infection is in how it’s designed and also functions, i beg your pardon is likewise related come weight, by transmitting strength from the engine come the wheels.


Without it, you can have the most powerful engine in the world, however you’d still never ever leave her driveway.

Like any kind of vehicular element, no all transmissions are created alike, and neither execute they all weigh the same.

The weight of the transmission

While most transmissions room within the 100 and 400 lb mark, over there are, however, some distinct exceptions, though because that the general public and also typical vehicles, this is the usual weight range of a transmission.

Why does infection weight matter?

You can need to recognize the prize if you’re thinking around working underneath her car, ~ above the infection itself, buying components for it, or listing it for sale. Regardless, it’s a advantageous piece that data to understand.

Today, we’re not only going to offer you the price to transmission weight, but we’ll additionally be breaking down the ins and also outs of the answer so you have the right to be a well-informed driver. All set to find out more? Let’s rev that up!

Common infection Weight

As proclaimed above, relying on the make and model of your car, your transmission can generally weigh anywhere between 100 and 400 pounds.

It should be noticeable that the size and also weight that your infection will boost as you dimension up her vehicle. This way a smaller sedan will have a much more lightweight one than a minivan.

Look because that models such together a front-wheel-drive sedan to have actually transmissions the weigh approximately 100 pounds. A big van or SUV may have actually one at 400 pounds or heavier. As soon as it involves transmission weight, front-wheel drive vehicles and also rear-wheel journey ones carry out no show much variation.

The number of speeds obtainable on your transmission

Keep in mind that while you may have the ability to lift a tiny transmission by one hand, it’s always wisest to usage a cherry picker or a infection jack once you’re working through one.

Which Is Lighter: automatically or hand-operated Transmissions?

Later, we’ll discuss the high-level differences in between a manual and automatic transmission, yet it’s only organic to wonder which of this two types weighs the most. In general, over there is only between 50 and also 75 pounds that difference between the weight of automatic and also manual transmissions, through the manual most generally being lighter. Still, it’s valuable to do the comparison, specifically if you’re in the sector for a new one for her car.

In many cases, a manual transmission is the lightest bet. This is contrasted to automatic models that possess the exact same torque capabilities and gear ratios. That is heavier dimension helps to define why automatic models have actually poorer fuel economy and drive train loss.

Why carry out automatic models weigh more? The prize lies in your makeup. Automatically transmissions room enclosed in a actors iron case, while plenty of manual models rely on an aluminum one.

This distinction alone accounts for a weight selection of in between 20 and 30 pounds.

There are additionally the hardware differences to account for. In general, one automatic infection includes much more parts 보다 a hand-operated one. This needs both the system itself, and its housing, to it is in on the larger and also heavier side.

Does this median an automatic infection is heavier and therefore makes your auto slower? not at all.

The weight difference is not significant enough to impact performance. This way you need to opt because that the model that you prefer.

Some lean toward a hands-on transmission for the hand-operated driver control and the method it permits them to live the end their childhood desires of owning a specific vehicle, such together my own personal favorite, the Lamborghini Countach. Others prefer the smooth ride and also easy operation of an automatic model.

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By Brian Snelson native Hockley, Essex, England – Lamborghini Countach, CC through 2.0, https://commons.wikimedia.org/w/index.php?curid=18326442

What Is the Heaviest infection Model?

To date, among the heaviest recognized models of transmission is the Allison 4500 found in the medium Tactical car Replacement (MTVR). This seven-speed transmission is designed to withstand up come 1200 foot-pounds of intake torque, even in a auto with as much as 60,000 pounds of gross weight.

The Allison 4500 is mainly used in purpose-designed military vehicles, though it has gotten some commercial use in the firefighting sphere.

Using transmission Data Wisely

It’s beneficial to recognize the load of her transmission, specifically if you’re plan to take it in for a replacement.

In some cases, friend may also need to delivery it off for repairs or have actually a instead of unit shipped to you. Discovering the load can assist you calculate her shipping expenses ahead that time.

If you’re unsure of the exact weight of your transmission, take it to your regional mechanic who can safely sweet it for you. This is recommended end trying come disassemble and measure it yourself, which can pose a slew of risks to your physical safety.

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Not every transmissions space of the same weight, design, size, or also function.

Car transmission 101

Now that we’ve sorted out assorted transmission weights, let’s take a quick review that what this item of equipment does.

What go a transmission do?

In short, a transmission absorbs the rotational power that your engine generates, climate delivers it to your vehicle’s wheels. The basic function is to control the level of speed and also torque obtainable to your drive wheels.

What species of transmissions space there?

There room two varieties of transmissions: manual and automatic. manual transmissions require the driver/operator to shift or adjust gears as they drive, while automatically transmissions carry out the changing of gears itself together speed and task requirements adjust during driving.

Now let’s explore the highlights of each.

Manual Transmission

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Manual transmissions need the user/driver to change/shift with the various gears through hand, “up” to high or “down” to low, or also reverse.

A hand-operated transmission features a gearbox the adjusts speed and torque for different driving conditions. It works according come a principle well-known as gear ratio.

In a basic transmission mechanism, there are three main components: the input, intermediary shaft, and also output.

The intake connects to the intermediate pillar to keep it rotating in ~ a constant speed. Meanwhile, the intermediate tower connects come the output gear set, the gears that which revolve at differing speeds depending upon the equipment ratio.

When you change the gears, you influence these ratios, which influence the speed and also torque the the vehicle. This ratios work-related in a converse manner, an interpretation that together you boost torque, you reduced speed and also vice versa.

For instance, a three-speed device will have actually the following ratios:

1st Gear: Low-speed output, high wheel torque2nd Gear: Medium-speed output, middle wheel torque3rd Gear: High-speed output, short wheel torque

When you’re going increase a steep incline, friend need much more torque. In this case, your gearbox will reduce the speed at her transmission, generating greater torque in ~ the same power input.

Gear and Shaft Connections

Note that the calculation gears aren’t fixed with the calculation shaft. Rather, there is a slight clearance present. One equipment affixes at a time, giving the output pillar the rate of that associated gear.

The gears affix come the obelisk via a hub attached in between them. A sleeve lies on height of the hub. Together the sleeve moves, it offer to connect each proper gear with the shaft.

The complication? The hub and also gear operate at different speeds under normal operation. This provides the sleeve-gear link impossible come achieve.

A synchronizer ring, paired with what’s known as a friction cone, can help to align the equipment speed v the sleeve for a smooth connection.

When you desire to change the gear, you’ll should disengage the clutch, i m sorry discontinues power and causes a momentary drop in speed. This describes why anyone with a hand-operated transmission is used to a bumpy ride!

Automatic Transmission

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Automatic transmissions take almost every one of the work out the shifting. They pick gears for the driver, based on conditions and what requirements to be done at a offered moment.

Most high-performing automobiles come equipped through an automatically transmission.

Compared come the gear pair that controls an automatically transmission, an automatic one centers top top a planetary equipment set, or epicycloidal. Manufacturers emerged automatic transmissions come take treatment of the start-stop strength discontinuation the occurs in hands-on models.

Brazilian engineers developed the first automatic infection in the at an early stage 1930s, marketing the prototype to general Motors. In turn, GM debuted the “Hydra-Matic” infection in that is 1940 Oldsmobile.

The main components of a planetary gear set include:

Ring gearSun gearPlanet gearCarrier

Each collection features two inputs and also one output. By giving different speeds to the ring and sun gears, girlfriend can accomplish varying speed at the output. Locking one part makes the others change pace, delivering various gear ratios.

In direct drive, the input and also output shafts rotate at the very same speed. In overdrive, the output shaft turns much faster than the intake shaft.

Planetary equipment Control

In a basic automatic transmission, there are two planetary sets. One of the entry of one set attaches seamlessly to the output of the other. In other words, they type one cohesive component.

A transmission hydraulic mechanism works in conjunction with a clutch load (set that metal and also friction discs), oil pump, and also valve body to control the planetary gear sets.

The earth gears affix to one an additional via a common carrier. This permits them come spin on shafts recognized as pinions, attached to the carrier. Together they’re in a constant mesh, friend can readjust gears there is no engaging or disengaging any kind of of them, unlike through a hand-operated transmission.

How walk the transmission know which components of the planetary equipment system to assign as the entry gear, output gear or together stationary?

Brake pads and also clutches take care of this task. Brake pads can tighten to do a ring or sun gear stationary or ease to permit it come spin. The hydraulic system controls which of the 2 actions it performs.

When the steel discs in the clutch load press together because of mechanical, hydraulic, and also electrical design, the clutch engages. In turn, this can reason a planetary gear to end up being an entry gear.

Or, it have the right to stop it and also turn that stationary instead. The planetary gear link determines how the corresponding contents move, which translates to equipment ratio. The planetary plan controls just how much strength the transmission sends to the remainder of your car’s drivetrain.

Even under load and also without a clutch, an automatically transmission permits drivers to shift between gears with ease, help them eliminate the awkward managing that’s end up being the trademark that some hands-on versions.

Main components to Know

An analysis of infection weight must take into account the various components that consist of a transmission. Though these will certainly vary relying on whether you have a manual or automatic model, below are the primary pieces come know:

Input shaftCountershaftOutput shaftPressure plateDiscFlywheelClutchShift forkPlanetary gearsTorque converterOil pumpValve bodyComputer controlsGaskets and also seals

Keep in mind that these contents are those that come standard on hand-operated or automatic infection models. Over there are other models, consisting of semi-automatic and also dual-clutch transmissions, that have actually a unique collection of gear.

There is likewise an arising model well-known as a Tiptronic transmission, additionally called a Sportmatic or Steptronic transmission. This are essentially automatic models that have the right to be controlled either manually or via computer. Again, these may have unique components and controls the aren’t included in hands-on or automatically models.

Transmissions come Tools: Advice You can Trust

It isn’t simple being handy around the house. Along with the duty to fix a leaky faucet, fix a damaged shelf, or take it a look at under the hood comes the require for a top-notch toolset.

Without a curated arsenal the supplies, even the finest household handyman can be rendered helpless. Yet, with so numerous on the market, it have the right to be complicated to discern which strength tools and also equipment room the best.

Today you to be wondering, “How lot does a transmission weigh?” Tomorrow, you can need come inquire on which DeWalt cordless influence wrench is the best fit for her job.

That’s whereby we expect to come in.

We’ve taken the moment to test and research the tools so friend don’t have to. Even if it is you’re in search of power device advice or impact tool reviews, it’s every here.

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