Si4
From Wikislippy
The Si4 is a car motor manufactured by Korean So Industries. The motor is used only in the So Shi-Tei. It is believed Si4 stands for So inline 4 or So industries 4.
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[edit] Si4
The Si4 is an inline four motor used in the So Shi-Tei from 1983 until 1988, 1993, and 1994.
[edit] Si4v2
The Si4v2 was a redesigned Si4. The motor was used between 1988 and 1994 and had 59 horsepower. The V2 refers to it being Version 2 of the Si4. In 1989, it was learned that the Si4v2 was suffering from severe problems that would often destroy the engine. Originally, So covered this in the warranty until 1990 when they could not afford it. Production of the Shi-Tei and the Siv2 ended in January 1994.
[edit] JIF
In 2000, Am-Kor Limited decided to bring back the Shi-Tei. This time, they contracted Jayatsu Industrial to design and manufacture the engine for the new Shi-Tei. They were given a short amount of time to design a new engine. Instead of creating a whole new engine, Jayatsu Industrial decided to redesign the original Si4 to save time. The end result was a 68 horsepower inline four called the Jayatsu Industrial Inline Four (JIF). The first JIF was produced in 2002 and are sill produced today. All JIF motors are manufactured by Jayatsu Industrial.
[edit] JIF-G
In 2008, the JIF-G was released. The JIF-G is a modified JIF. This version is designed for better fuel economy and only has 60 horsepower. The G stands for green.
