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DOHC - 2.3L Duratec / Mazda L Engines Discussions and Topics specific to the Duratec 4 cylinder engines

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Old 10-03-2016
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Location: Carlisle Ky
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2.3 duratec engine

Hello everyone,, I have a mustang dirt track car and I was thinking bout putting a 2.3 duratec and 5 speed trans out of a ranger in it,, my question is how powerful and how dependable is this engine?
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Old 10-03-2016
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The 2.3l Duratec is a Mazda L engine
DOHC and a good reliable engine.
The M5OD-R1 transmission is bullet proof, very reliable, make sure to change the 3 shift rail plugs from stock rubber ones to metal ones, rubber ones would leak as they got older, costs under $2

The 23EW(east-west) was used in cars, transverse mounted(FWD), which was original design
The 23EW has cams that produce less torque but more horse power

The Ranger got the 23NS(north-south) it had cams that produce more torque and less horse power, and of course was mounted longitudinally(RWD)

The 2004+ Ranger 23NS had 10 more horse power(143) than the 2001-2003 versions(135)
The 2001-2003 versions also had a POS electric thermostat, so I would just get a 2004 or newer model

Google: Mazda L engine

Because original design was for transverse mounting there is a cooling line that comes out the back of the engine which is easy to get to in that configuration.
When they put the engine into a Ranger that cooling line became a problem if it should leak, can't get to it without dropping the transmission.
In a racing car you may have more clearance, or could cut a hole in firewall and install cover plate, before installing engine so you could have access there as needed.

Last edited by RonD; 10-03-2016 at 06:47 PM.
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Old 01-08-2017
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Duratec 2.3's can be tuned for up to 300hp if your wallet is deep enough
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