Ford CHT engine

The letters CHT denote a particular type of four-cylinder internal combustion engine produced by the Ford Motor Company in Brazil during the 1980s. It is a completely different engine from the CVH engine and should not be mistaken with it. Contrary to the CVH, the CHT was very economical and had a very smooth and low noise profile, inherited from its Renault design.

The CHT (Compound High Turbulence) engine was introduced by Ford in 1984 in the Mark 3 version of the Ford Escort, the first of the series to be released in Brazil. It was later used in the Ford Del Rey, the Ford Verona (a Brazilian Ford Orion), as well as the Volkswagen Gol.

This engine was based on the Renault Cléon-Fonte engine from 1962. The Cléon-Fonte engine designed by engineer René Vuaillat is a small four -cylinder entirely new design, which appeared on the Renault Floride S and Renault 8 in 1962. Ford do Brasil inherited this engine upon buying the Brazilian Willys/Renault operation in the late 1960s. It has a total of eight overhead valves, and features a rotating valve design. The displacement of the original Cléon-Fonte used in Ford Corcel was 1,289 cc (73x77 mm bore and stroke); this was later raised to 1,372 cc (75.32x77 mm) for the "XP" engine, later called "1300-B" in single-carburetted form. The Cléon-Fonte was finally increased to 1,555 cc (77x83.5 mm) in 1979, which is also the displacement of the CHT. Ford do Brasil used the Cléon-Fonte engine until 1983, when they made a thorough redesign to the head and in the process renaming it the CHT. The Corcel-derived Ford Pampa pickup truck also used the Cléon-Fonte engine until replaced with the CHT in 1984.

...
Wikipedia