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Old 02-26-2010, 09:19 PM   #1
rangergt
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Default 2.3 duratec/mazda mzr

I thought I'd share a little info on these engines with some pics. In my research of these engines the last couple of years I've run across a lot of clueless posts on various websites as well as some very good info. Anyway I am by no means an expert but I have torn down a ranger 2.3 dtec and a mazda 2.3 mzr as well I'm in the process of putting together a fairly expensive and healthy 2.3 duratec. There are minor differences but for the most part internal components are interchangeable. I'll have to get my picture files together for comparison of the differences (still working on that with the new computer). Here's a fun pic to start with, the 2.3 mzr(dtec) head in the bandsaw and a pic of the head x-section.
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A dyno can't put a smile on your face like the 1/4 mile can 10.63@130mph 2.3 duratec 3475 lbs race weight

The Quest for 9's continues...
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Old 02-27-2010, 12:16 AM   #2
rangergt
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Here is a comparison of the engine bocks. On the left is the ranger 2.3 duratec block that I am using to build my 600+ hp engine with and on the right is the "mazda mzr" engine block. Nearly identical, however the "mazda" block is machined for the balance shafts. The last pic is a close up of the "mazda mzr" engine block, interesting. Right now I have the mazda block in the truck for mock up with the stock ranger crank installed.
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A dyno can't put a smile on your face like the 1/4 mile can 10.63@130mph 2.3 duratec 3475 lbs race weight

The Quest for 9's continues...
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Old 02-27-2010, 04:07 AM   #3
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wow thats interesting. in your regular build, your using the ranger block right? mzr is just for maching up?
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Old 02-27-2010, 01:04 PM   #4
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Yes I'm using the ranger block for my build but I could use the mazda block either way. The bores are a little better on the mazda block so I will be saving it to build a budget stock crank engine to see what the stock crank will take.

The mazda and the duratec focus block are the same, the ranger block is cast at a different factory and not machined for the balance shafts. One of the reason that I am posting this info is I have noticed that the mazda engines were more plentiful in the wrecking yards and in some cases cheaper to buy. Of course there are a ton of 2.0 duratecs out there and a lot of parts are interchangeable with the 2.3 dtec but not all, so this is also a good option for a performance build. Here is a pic of the block with balance shafts and a pic of the bottom of the block with the crank girdle sitting in location.
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File Type: jpg 100_4725.jpg (66.2 KB, 236 views)
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A dyno can't put a smile on your face like the 1/4 mile can 10.63@130mph 2.3 duratec 3475 lbs race weight

The Quest for 9's continues...

Last edited by rangergt; 02-27-2010 at 01:13 PM..
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Old 02-27-2010, 01:54 PM   #5
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Awsome info, i can't wait till your done!
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Old 03-03-2010, 09:20 PM   #6
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Just thought I'd add a bit to this. The first pic is of the 2.3 mazda mzr (duratec) engine assembled as it come out of the mazda 3. Second pic is the of the casting on the side of the "mazda" block. The third pic shows the VVT which is on the intake cam only. The forth pic show the front of the engine w/o the timing cover revealing the timing chain and the oil pump chain drive. The last pic is of the head with the intake cam removed and the exhaust cam still in place. The cams are direct acting over the valves. A lifter bucket rides over the valve and spring under the cams which is also the way the valve lash is setup using a graded lifter bucket. The duratec uses mechanical cams which is why they are a little bit noisy especially when cold. The picture dosen't show it but both the cams and lifter buckets showed some scoring from a lack of oil which destroyed this engine.
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A dyno can't put a smile on your face like the 1/4 mile can 10.63@130mph 2.3 duratec 3475 lbs race weight

The Quest for 9's continues...
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Old 03-04-2010, 10:30 AM   #7
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Thanks for this Info GT!!!

I think i see the replacement Lima!!
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Old 03-04-2010, 01:13 PM   #8
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This is really helpful. I have always wondered about these engines. Is there front wheel drive versions and rear wheel drive versions? Or are they all the same? What vehicles and years are these from? Also, do you know if the variable cam timing is purely a mechanical thing (centrifugally activated) or is it electronically controlled?
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Old 03-05-2010, 09:39 PM   #9
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I'm happy to hear this is helping. It's not so much that there is a front wheel and rear wheel drive version because one engine can swap to the other. The flywheels are different and I believe the starters maybe be as well but I'm not sure on that. The intake manifold is different for sure an the accessory drive may be as well.

These engines came in 2001 and later ranger/mazda b series trucks as well as the fusion and mazda 6 with vvt, the mazda 3 with vvt not sure what year, the escape/tribute and focus what ever year the pzev (2.3 engine) was intrduced.

The vvt is definetly electronically controlled as well as hydraulically. The hydraulics is what makes the head different.
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A dyno can't put a smile on your face like the 1/4 mile can 10.63@130mph 2.3 duratec 3475 lbs race weight

The Quest for 9's continues...
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Old 03-05-2010, 10:07 PM   #10
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don't forget the mercury milan
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