Duratec FAQ - Take a look in here

[OneAMRadio]

You will have to tune for different injectors and the MAF sensor.

-Ryanq

[TravEsD20]

I think this list needs to be updated. Some of the links don't work anymore due to (I think) the software swap .

[netdragoon]

Okay, so is the final drive ratio on my 2005 ZX3 3.82 or 3.42? marcy says 3.82 near the bottom of the first post, and egz says 3.42...which is it?

[pitchblack23]

I think Egz was talking about pre-05 Duratecs when he said 3.42. Your '05 should have a 3.82 gearset.

[Egz]

Correct. 2005+ are 3.82

[TravEsD20]

Originally Posted by pitchblack23

I think Egz was talking about pre-05 Duratecs when he said 3.42. Your '05 should have a 3.82 gearset.

Wait, what do you mean pre 05'? In what time frame did the change happen ?

[aerostudent]

'03.5

[pitchblack23]

Wait, I'm confused now. As I understand it:

'03 and '04 Duratecs have 3.42 gearsets
'05 and up Duratecs have 3.82 gearsets

Is that right?

[TravEsD20]

What I thought was that they changed it to 3.82 mid 05' for some reason .

You're right pitchblack23

[netdragoon]

That excites me. Now I won't worry about a gear change...I'll just run 205/50/15 drag radials...shorter tire (makes my effective gear ratio somewhere around 4.02) and better traction = better times.

[waynenewton]

tach install no pix until requested.

http://forums.focaljet.com/duratec-t...tallation.html

[Inkedfireman]

Does anyone know what the complete 2.3 Duratec weighs? I'm just curious for a future project.

Denny

[Oreo]

Mmmm I can't give you any info quickly but I could try to work on this for you. I have a spare engine with transmition still attached sitting on a pallat. If I could find a suitable scale I might be able to get a measurement.

[pzev04boy]

Originally Posted by Inkedfireman

Does anyone know what the complete 2.3 Duratec weighs? I'm just curious for a future project.

Denny

They are only between 170 and 205 lbs depending on if you have an a/c compressor, ect ect bolted onto them.

Very light.

[Z63R]

little2.0

ALL SPECS ARE 100% ACCURATE AND, DONT ASK WHERE I GOT THEM.
General Specifications ItemSpecification
EngineDisplacement2.0L
No. of cylinders4
Bore/stroke87.5/83.1
Firing order1-3-4-2
Oil pressure (hot @ 2,000 rpm)200-268 kPa (29-39 psi)
Oil capacity3.9L + 0.38L (4.1 qt + 0.4 qt) with filter
Cylinder BlockCylinder bore diameter87.5-87.53 mm (3.444-3.445 in)
Cylinder bore maximum out-of-round0.008 mm (0.0003 in)
Main bearing bore diameter57.020-57.038 mm (2.244-2.245 in)
Head gasket surface flatness0.1 mm/general 0.05 mm/200 x 200 (0.004 in/general) (0.0019 in/7.87 x 7.87)
PistonDiameter (1)87.5-87.51 mm (3.444-3.445 in)Diameter (2)87.51-87.52 mm (3.4452-3.4456 in)Diameter (3)87.52-87.53 mm (3.444-3.446 in)
Piston-to-bore clearance0.025-0.045 mm (0.0009-0.0017 in)
Ring groove width — top1.203-1.205 mm (0.0473-0.0474 in)
Ring groove width — 2nd1.17-1.19 mm (0.0.460-0.0468 in)
Ring groove width — oil2.501-2.503 mm (0.0984-0.0985 in)
Piston skirt coating thickness0.008-0.020 mm (0.0003-0.0007 in)
Piston PinDiameter20.995-21.0 mm (0.8266-0.8268 in)
Length59.6-60.4 mm (2.346-2.377 in)
Piston-to-pin clearance0.008-0.016 mm (0.0003-0.0006 in)
Pin-to-rod clearancePress fit
Cylinder HeadValve lift @ zero lash (exhaust)7.7 mm (0.30 in)Valve lift @ zero lash (intake)8.8 mm (0.35 in)
Valve guide diameter5.509-5.539 mm (0.216-0.218 in)
Valve seat width — intake/exhaust0.99-1.84 mm (0.038-0.072 in)
Valve seat angle45 degrees
Valve seat runout0.075 mm (0.0029 in)
Valve lash adjuster bore diameter31.00-31.03 mm (1.220-1.221 in)
Cam bore diameter25.015-25.040 mm (0.984-0.985 in)
ValveValve head diameter — intake34.85-35.15 mm (1.372-1.383 in)
Valve head diameter — exhaust29.85-30.15 mm (1.175-1.187 in)
Valve stem diameter — intake5.470-5.485 mm (0.2153-0.2159 in)
Valve stem diameter — exhaust5.465-5.480 mm (0.2151-0.2157 in)
Valve stem-to-guide clearance — intake0.0027 mm (0.0001 in)
Valve stem-to-guide clearance — exhaust0.0029 mm (0.00011 in)
Valve face runout0.05 mm (0.001 in)
Valve face angle45 degrees
Valve Spring — Compression PressureIntake and exhaust (installed)17.5 kg (38.667 lbs)Intake (valve open) 8.9 mm (0.35 in) of lift44 kg (97.032 lbs)Exhaust (valve open) 7.4 mm (0.29 in) of lift42 kg (93.338 lbs)
Free length44.92 mm (1.768 in)
Assembled height37.9 mm (1.492 in)
CrankshaftMain bearing journal diameter51.980-52.000 mm (2.046-2.047 in)Production repair51.730-51.750 mm (2.036-2.037 in
)Main bearing clearance0.019-0.035 mm (0.0007-0.0013 in)
Connecting rod journal diameter49.980-50.000 mm (1.967-1.968 in)Production repair49.730-49.750 mm (1.957-1.958 in)End play0.22-0.43 mm (0.008-0.016 in)
RingsWidth — top1.17-1.185 mm (0.0460-0.0466 in)Width — 2nd1.197-1.199 mm (0.0471-0.0472 in)Width — oil2.38-2.45 mm (0.093-0.096 in)Ring gap (in bore) — top0.16-0.31 mm (0.006-0.012 in)Ring gap (in bore) — 2nd0.33-0.48 mm (0.012-0.018 in)Ring gap (in bore) — oil0.2-0.7 mm
(0.007-0.027 in)
Valve TappetDiameter30.97-30.98 mm (1.2192-1.2196 in)
Tappet-to-valve clearance — intake0.22- 0.28 mm (0.008-0.011 in)
Tappet-to-valve clearance — exhaust0.27-0.33 mm (0.010-0.013 in)
Tappet-to-bore clearance0.02-0.06 mm (0.0007-0.0023 in)
CamshaftLobe lift — intake8.24999 mm (0.324 in)
Lobe lift — exhaust7.80007 mm (0.307 in)
Runout (1)a 0.03 mm (0.001 in)
Thrust clearance0.09-0.24 mm (0.003-0.009 in)
Journal diameter24.96-24.98 mm (0.982-0.983 in)
Journal-to-bore clearance0.035-0.080 mm (0.001-0.003 in)
Connecting RodBearing clearance0.027-0.052 mm
(0.001-0.002 in)
Bearing thickness1.496-1.520 mm (0.058-0.059 in)
Crank bore diameter53.025-53.045 mm (2.087-2.088 in)
Pin bore diameter20.965-20.985 mm (0.825-0.826 in)
Length (center to center)154.8 mm (6.094 in)
Side clearance1.95-3.05 mm (0.076-0.120 in)
Axial clearance0.14-0.36 mm (0.005-0.014 in)
a No. 3 Journal — Supported by No. 1 and No. 5 journals.


General Specifications ItemSpecification

EngineDisplacement2.3
LNo. of cylinders4
Bore/stroke87.5/94.0
Firing order1-3-4-2
Oil pressure (hot @ 2,000 rpm)200-268 kPa (29-39 psi)
Oil capacity3.9L + 0.38L (4.1 qt + 0.4 qt) with filter
Cylinder BlockCylinder bore diameter87.5-87.53 mm (3.444-3.446 in)
Cylinder bore maximum out-of-round0.008 mm (0.0003 in)
Main bearing bore diameter57.020-57.038 mm (2.244-2.245 in)
Head gasket surface flatness0.1 mm/general 0.05 mm/200 x 200 (0.003 in./general) (0.0019 in./7.87 x 7.87)
PistonDiameter (1)87.5-87.51 mm (3.444-3.445 in)Diameter (2)87.51-87.52 mm (3.4452-3.4456 in)Diameter (3)87.52-87.53 mm (3.4456-3.4460 in)
Piston-to-bore clearance0.025-0.045 mm (0.0009-0.0017 in)
Ring groove width — top1.203-1.205 mm (0.0473-0.0474 in)Ring groove width — 2nd1.17-1.19 mm (0.0460-0.0468 in)Ring groove width — oil2.501-2.503 mm (0.0984-0.0985 in)
Piston skirt coating thickness0.008-0.020 mm (0.0003-0.0007 in)
Piston PinDiameter20.995-21.0 mm (0.8265-0.8267 in)
Length59.6-60.4 mm (2.346-2.377 in)
Piston-to-pin clearance0.008-0.016 mm (0.0003-0.0006 in)
Pin-to-rod clearancePress fi
tCylinder HeadValve lift @ zero lash (exhaust)7.4 mm (0.30 in)Valve lift @ zero lash (intake)7.9 mm (0.31 in)
Valve guide diameter5.509-5.539 mm (0.216-0.218 in)
Valve seat width — intake/exhaust0.99-1.84 mm (0.038-0.072 in)
Valve seat angle45 degrees
Valve seat runout0.075 mm (0.0029 in)
Valve lash adjuster bore diameter31.00-31.03 mm (1.220-1.221 in)
Cam bore diameter25.015-25.040 mm (0.984-0.985 in)
ValveValve head diameter — intake34.85-35.15 mm (1.372-1.383 in)
Valve head diameter — exhaust29.85-30.15 mm (1.175-1.187 in)
Valve stem diameter — intake5.470-5.485 mm (0.2153-0.2159 in)
Valve stem diameter — exhaust5.465-5.480 mm (0.2151-0.2157 in)
Valve stem-to-guide clearance — intake0.0027 mm (0.00010 in)
Valve stem-to-guide clearance — exhaust0.0029 mm (0.00011 in)
Valve face runout0.05 mm (0.0019 in)
Valve face angle45 degrees
Valve Spring — Compression PressureIntake and exhaust (installed)17.5 kg (38.667 lb)Intake (valve open) 8.9 mm (0.35 in) of lift44 kg (97.032 lb)Exhaust (valve open) 7.4 mm (0.29 in) of lift42 kg (93.338 lb)
Free length44.92 mm (1.768 in)
Assembled height37.9 mm (1.492 in)
CrankshaftMain bearing journal diameter51.980-52.000 mm (2.046-2.047 in)Production repair51.730-51.750 mm (2.036-2.037 in)
Main bearing clearance0.019-0.035 mm (0.0007-0.0013 in)
Connecting rod journal diameter49.980-50.000 mm (1.967-1.968 in)Production repair49.730-49.750 mm (1.957-1.958 in)
End play0.22-0.43 mm (0.008-0.016 in)
RingsWidth — top1.17-1.185 mm (0.0460-0.0466 in)
Width — 2nd1.197-1.199 mm (0.0471-0.0472 in)
Width — oil2.38-2.45 mm (0.093-0.096 in)Ring gap (in bore) — top0.16-0.31 mm (0.006-0.012 in)Ring gap (in bore) — 2nd0.33-0.48 mm (0.012-0.018 in)Ring gap (in bore) — oil0.2-0.7 mm
(0.007-0.027 in)
Valve TappetDiameter30.97-30.98 mm (1.2192-1.2196 in)
Tappet-to-valve clearance — intake0.22- 0.28 mm (0.008-0.011 in)
Tappet-to-valve clearance — exhaust0.27-0.33 mm (0.010-0.013 in)
Tappet-to-bore clearance0.02-0.06 mm (0.0007-0.0023 in)
CamshaftLobe lift — intake8.24999 mm (0.324 in)
Lobe lift — exhaust7.80007 mm (0.307 in)Runout (1)a 0.03 mm (0.001 in)
Thrust clearance0.09-0.24 mm (0.003-0.009 in)
Journal diameter24.96-24.98 mm (0.982-0.983 in)
Journal-to-bore clearance0.035-0.080 mm (0.001-0.003 in)
Connecting RodBearing clearance0.027-0.052 mm
(0.001-0.002 in)
Bearing thickness1.496-1.520 mm (0.058-0.059 in)
Crank bore diameter53.025-53.045 mm (2.087-2.088 in)
Pin bore diameter20.965-20.985 mm (0.825-0.826 in)
Length (center to center)154.8 mm (6.094 in)
Side clearance1.95-3.05 mm (0.076-0.120 in)
Axial clearance0.14-0.36 mm (0.005-0.014 in)a No. 3 Journal — Supported by No. 1 and No. 5 journals.


HOPE THIS WILL COME IN HANDY FOR ANYONE LOOKING TO BUILD UP YOUR DURATEC.

.

[07STfocus]

i have the new 07 ST, and i was wondering if anyone knows what the whp and wtq on the car.

[MidWestRacer]

Originally Posted by 07STfocus

i have the new 07 ST, and i was wondering if anyone knows what the whp and wtq on the car.

151 hp and 154 tq at the Flywheel so figure around 130 roughly at the wheels.

[07STfocus]

Originally Posted by MidWestRacer

151 hp and 154 tq at the Flywheel so figure around 130 roughly at the wheels.

thanks, there is going to be a dyno run on the 28th of this month that im going to go to, so after the runs ill post the runs.

[07STfocus]

My car got 128whp and 138ft/lbs on the dyno

[sleeper2]

Heard that D20 has a larger TB than the d23? someone has the info?

[Oreo]

Huh? I don't think so. Pretty sure the part numbers are the same.

[nocturnal_zx3]

The Duratec 20 and Duratec 23 used in the American Focus are built by Ford in Chihuahua, Chihuahua, Mexico.

The engine was inspired by the Mazda MZR design. Esentailly the design is a Mazda design. However, Mazda's Duratec 20 utilizes VVT (variable valve timing) and can be found in the Mazda MX-5, Mazda 5 and in Europe in the Mazda 6. Mazda's Duratec 23 used in the Mazda 6 in the U.S. also uses VVT producing 160 hp compared to the Focus Duratec 23 (without VVT) producing 151 hp. So while the engines are a Mazda design, Ford's versions of them (placed in the Focus and Ranger) differ from Mazda's initial design by excluding VVT.

[nomadzx4]

i run royal purple 5w30 in my 07 2.0l, works great, wouldent suggest the tranny fluid (manual tranny), its a little stiff in the morning, i use the red line stuff

[vin0410]

One thing of note is that although the 2.3 crank is 11mm stroker than the 2.0's, it does not mean the block is 11mm taller. I have measured and found that 2.3 block is in fact around 25mm taller. The difference comes from longer rod in a 2.3.