Ford MTX transmission
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The MTX-II was a 4 speed manual transaxle introduced in the Ford Escort and Mercury Lynx as a base model "fuel saver" design. The Tempo and Topaz also used this as a base model. It was succeeded by the MTX-III.
The MTX-III was introduced in 1983 in the Ford Escort and Mercury Lynx. It was available in the Tempo and Topaz throughout their ten-year run, and was used in the Taurus MT-5. This transmission was discontinued in 1994. A 3.73 final drive ratio version was standard in the Tempo GLS/Topaz XR5/LTS sport sedans/coupes.
The MTX-IV is a beefed-up version built by Mazda and introduced in 1989 for the Taurus SHO. It was also used in Tempo/Topaz models equipped with the Vulcan V6. Installing this transaxle into a V6 Tempo requires the use of a Tempo-specific flywheel, clutch, pressure plate and CV axles. This transaxle has also been used in the aftermarket to convert a 3.0L Vulcan-powered Taurus to a manual, something which was not offered from the factory.
Gear ratios (Vulcan Tempo/Topaz):
† - The actual 5th gear ratio is 1.02:1 (same as 4th gear), but it runs through a different final drive gear from gears 1-4 and reverse, with a ratio of 2.73:1, thus giving it an effective gear ratio of 0.74:1, if one assumes that it has the same final drive ratio as the rest of the gears.