6.9L IDI Engine: 1982-1987 (jan 1, 1982 – jan 1, 1987)

Description:

It all began in 1982 when Ford released its first diesel engines designed for the general public. With a displacement of 6.9L, the naturally-aspirated powerplant churned out 170 hp and 315 lb.-ft. of torque. And though that’s not a lot of grunt by today’s standards, for the 1980s those were impressive numbers.

The engine was a joint venture between Ford and International (which is now Navistar). It got fuel from a Stanadyne DB2 rotary distributor fuel injection pump and had a sky-high compressions ratio of 20.7:1. The fuel system also gave the engine its name – IDI stands for indirect injection.

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