What is transmission overall ratio?
The transmission ratio is defined as the ratio of the angular velocities or frequencies of rotation of the components. This usually refers to the ratio of the angular velocity of the driving component to the angular velocity of the driven component: u = ω1/ω2.
When did Toyota change the gears in the transmission?
Unlike in the W58 the 5th/overdrive gear set was changed to create a smaller rpm drop between 4th & 5th gears so as to remain close to the overdrive ratio seen in the other boxes. The rest of the transmission remains unchanged. Applications (calendar years): 1983–1986 Toyota Supra MK 2 in certain non-US markets.
Is the number of gears in a transmission important?
The number itself is not important, but it is helpful in comparing transmissions to each other (only transmissions with the same number of gears can be compared). A2Resource> Engines and Transmissions> Ratios
What are the ratios in a Toyota W transmission?
1st and 2nd are low ratios like in the W56 for use to get a heavy vehicle moving. 3rd ratio is the same as in the W57/W58 for a lower rpm drop between 3rd & 4th useful in high-speed acceleration. 4th is direct 1:1 as per design in these boxes. 5th seems to be the base W55 overdrive ratio. Applications (calendar years):
How is a ratio shift accomplished in a Toyota transmission?
The ratio shift was accomplished by taking the W55 base ratios and changing the input shaft to intermediate shaft ratio by 7.9%, thus shifting 1, 2, 3 ratios higher by that amount (4th is direct 1:1).
Why is it important to know your transmission gear ratio?
Because different transmission gear ratios can greatly affect a drivetrain combination, it’s important for anyone performing a transmission swap to know the gear ratios of the gearboxes you might be installing in your vehicle.
Unlike in the W58 the 5th/overdrive gear set was changed to create a smaller rpm drop between 4th & 5th gears so as to remain close to the overdrive ratio seen in the other boxes. The rest of the transmission remains unchanged. Applications (calendar years): 1983–1986 Toyota Supra MK 2 in certain non-US markets.
What kind of gear ratio does a Toyota 4Runner have?
There are 4 common factory gear ratios for the ’84-’95 pickups and 4Runners. What ratio your truck has depends on what type of transmission it came with (manual/4 speed) or automatic) and whether it came with the factory 31″ tire option (early ’90s SR5 option) or the normal 28″ (P22575R15) tires, as noted below:
1st and 2nd are low ratios like in the W56 for use to get a heavy vehicle moving. 3rd ratio is the same as in the W57/W58 for a lower rpm drop between 3rd & 4th useful in high-speed acceleration. 4th is direct 1:1 as per design in these boxes. 5th seems to be the base W55 overdrive ratio. Applications (calendar years):