Science Fair Project Encyclopedia
Toyota W Transmission
Toyota Motor Corporation's W family is a family of RWD/4WD transmissions built by Aisin Warner . Physically, these transmissions have much in common (like the bellhousing-to-body bolt pattern) with other Aisin-built transmissions, like the Jeep AX-5 and the Toyota G-series. The W55, W56, W57, W58, and W59 are externally and internally very similar aside from the gear ratios.
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W40
4-speed model. Not much is known about this transmission.
W50
Often called the "steel-case" transmission for its steel shell, in contrast to the later W-series transmissions' aluminum case.
Ratios:
- First Gear: 3.287:1
- Second Gear: 2.043:1
- Third Gear: 1.394:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.853:1
Applications:
- 1978-1981 Toyota Celica
W55
This was the first of the aluminum-shelled W-series transmissions.
Ratios:
- First Gear: 3.566:1
- Second Gear: 2.056:1
- Third Gear: 1.384:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.85:1
Applications:
- 1982-1983 Toyota Carina
- 1982-1985 Toyota Celica
- 1983 Toyota Corona
- 1986 Toyota Soarer
- 1986 Toyota Supra#Toyota Celica Supra Mk 2 (1982-1986)
- 1986 Toyota Crown
- 1983-1986 Toyota Cressida
- 1983 Toyota Chaser
W56
A common truck transmission that came in 2-wheel and 4-wheel drive varieties.
Ratios:
- First Gear: 3.954:1
- Second Gear: 2.141:1
- Third Gear: 1.384:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.85:1
Applications:
W57
This version of the W58 was found in non-US market vehicles. It differs only in its fifth-gear ratio.
Ratios:
- First Gear: 3.285:1
- Second Gear: 1.894:1
- Third Gear: 1.275:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.861:1
Applications:
- 1983-1986 Toyota Supra MK 2
- 1986 Toyota Crown
- 1986 Toyota Cressida
W58
This transmission is very popular as a replacement of other vehicles' weak stock transmissions. It came in two varieties: the original found in the 1982-1992 non-turbo Supras, Celicas and Cressidas of the early 1980's; and the version found in early Mk 4 Supras and Lexus SC 300s. The latter version came with a stronger input shaft.
Ratios:
- First Gear: 3.285:1
- Second Gear: 1.894:1
- Third Gear: 1.275:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.783:1
Applications:
- 1982-1986 Toyota MK 2 Celica Supra
- 1986-1992 Toyota MK 3 non-turbo Supra
- 1993-1998 Toyota MK 4 non-turbo Supra
- 1986 Toyota Cressida
- 1986 Toyota Soarer
- 1982-1985 Toyota Celica
W59
A common truck transmission, this was the successor to the W56. Like the W56, it came in both 2-wheel and 4-wheel drive versions.
Ratios:
- First Gear: 3.954:1
- Second Gear: 2.141:1
- Third Gear: 1.275:1
- Fourth Gear: 1.00:1
- Fifth Gear: 0.85:1
Applications:
See also
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