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2.3L & 2.5L I4 Tech General discussion of 2.3L and 2.5L I4 Ford Ranger engines.

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Old 12-29-2015
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I am: Jimmy H
Join Date: Nov 2013
Location: Killeen, TX
Vehicle: 2002 Ford Ranger
Drive Type: x2
Engine: D23
Posts: 110
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Which engine do I have, Lima or Duratec?

Which engine do I have, Lima or Duratec?

Wiki Ranger Page

Wiki Lima page

Wiki Duratec page

Wiki Mazda L page

Lima: Ford engine, designed in-house.
Single Over-Head Cam (SOHC) with 2 valves per cylinder. Was a Pinto engine built at the Lima, Ohio plant. Has be produced in 2.0L, 2.3L, and 2.5L varients for use in the Rangers with the 2.3L Lima being the most numerous. Used from 1983 to mid-year 2001.

Duratec: Mazda engine.
Dual Over-Head Cam (DOHC) with 4 valves per cylinder. Is the "L engine" Ford acquired through their relationship with Mazda. Used from mid-year 2001 until the end of Ranger production in 2012.

Last edited by Tanker3278; 12-29-2015 at 11:42 PM.
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Old 12-30-2015
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I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
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Engine: 4.0
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very nice

"Duratec is a brand name of the Ford Motor Company used for its gasoline-powered four-cylinder, five-cylinder and six-cylinder passenger car engines"

Duratec 2.3l is a variant of the 2.3l Mazda L 23EW engine

Rangers got the Mazda L 23NS, Ford cars got the 23EW
NS = North-South
EW = East-West

NS orientation is for Rear Wheel Drive, engine mounted front to back
EW for Front Wheel Drive, engine mounted sideways

2.3l Mazda L was designed as 23EW, so when mounted in the Ranger NS there is a cooling system connection at the rear of the head/block which can only be accessed with transmission removed.
If transmission is ever removed it is a good idea to service this connection and hose.
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