Friday, January 10, 2014
T18 Transmission Specs
The Ford T18 transmission was produced by Borg-Warner between 1965 to 1991. The Borg-Warner T18 transmission replaced the earlier T98 transmission model in both Ford, Jeep and IH 1/2-ton, 3/4-ton and 1-ton heavy-duty trucks. There were two variants of the T18 transmission produced by Borg-Warner. It is advised to inspect the model number located beneath the top shaft cover before attempting to install a Jeep T18 transmission in a Ford vehicle.
Borg-Warner Specifications
The standard Borg-Warner T18 transmission has a length of 11.87 inches, a total height of 17.5 inches, and a total weight of 145 lbs. The T18 is cased in cast-iron. The top cover is also cast-iron. The PTO port is located on the passenger side of the vehicle. The T18 has gearing ratios of 6.32, 3.09, 1.69, 1.0 and R7.44. There are slight variations in the length of Ford T18 and Jeep T18 transmissions.
Ford T18 Specifications
The Ford T18 model transmission has a 1 and 1/16 inch diameter. The Ford T18 has a ten-spline shaft extending 6 and 1/2 inches from the front face of the transmission.The Ford T18 pilot tip is 18 mm. The front-bearing retainer flange is 4.85 inches. The diameter of the retainer tube is 1.43 inches in diameter. The front bolt of the T18 is patterned in a typical Ford symmetrical butterfly pattern, 6 and 5/16 inches in length by 8 and 1/2 inches in width.
Jeep T18 Specifications
There were roughly twelve variations of the Jeep T18 transmission released from 1966 to 1984. There are subtle variations present in each of the editions, but the key differences are present in the gear ratios and shaft length. Between 1972 to 1975 the standard gear ratio of the Jeep T18 was 4.02:1. Between 1977 to 1979 the gear ratio of the Jeep T18 was adapted to 6.32:1. The PTO port of Jeep T18 transmissions is located on the drivers side of the vehicle.
The Jeep T18 transmission was originally released with a length of 11.87 inches, a total height of 17.1 inches, and a weight of 145 lbs. Both the shaft and the top cover of the transmission are encased in cast-iron. Variations of the Jeep T18 transmission feature gear ratios of either 6.32, 3.09, 1.69, 1.0,and R7.44, or 4.02, 2.41, 1.41 and 1.0 in the earlier release.
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