Is the 4.10 Open Diff Common for the 2.3L? - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 2.3L & 2.5L I4 Tech Arrow DOHC - 2.3L Duratec / Mazda L Engines

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

LinkBack Thread Tools Search this Thread
Old 06-14-2006
FX2.3's Avatar
Thread Starter

I am: James R
Join Date: Jul 2005
Location: College Station
Vehicle: 2008 Chevrolet Silverado
Posts: 2,781
Total Props: 0
Is the 4.10 Open Diff Common for the 2.3L?

If I read this correctly


I have the 4.10 Open Diff, so is this normal for the 2.3L?

so then,,

I should run atleast 30"s to get the best performance? and my current tire size is hurting my mpg?

am I reading this right?
Reply With Quote
+ 0 -
Old 06-14-2006
5speedin2.3's Avatar
I am: Daniel K
Join Date: May 2005
Location: Livonia, Mi
Vehicle: 1997 Ford Ranger XLT
Posts: 12
Total Props: 0
mine came with a 3.73 open and a 7.5 axle.
Reply With Quote
+ 0 -
Old 06-15-2006
Needforspeed3685's Avatar
I am: Tim Martin
Join Date: Aug 2005
Location: Lowell, AR
Vehicle: 2000 Ranger Sport 2.5 2wd
Posts: 1,836
Total Props: 2
My 2000 2.5L Sport came with 4.10 Open 7.5 diff.
Reply With Quote
+ 0 -
Old 06-15-2006
rwenzing's Avatar
RF Veteran
iTrader: (4)
I am: Bob .
Join Date: Nov 2004
Location: Michigan
Vehicle: 2003 Ford Ranger
Drive Type: 4x4
Engine: 5.0
Posts: 7,773
Total Props: 19
That chart would apply for highway driving in 4th gear (1:1 ratio). I'm guessing that you would use 5th gear on the highway most of the time. 5th gear is overdrive and has a ratio of 0.8:1. So, all of the RPMs in that chart should be multiplied by 0.8 to get the true RPM in 5th at 65 MPH.

Your factory P225/70R15's are about 27.5" diameter. This corresponds to an RPM of about 3250 in 4th gear.

0.8 x 3250 = 2600

2600 RPM in 5th at 65. This is in the blue area where you want to be for best FE. It is also near the green area to maintain some highway performance. Looks like the Ford guys chose a good compromise.

2003 FX4 Level II, Supercharged 5.0L V8, Headers,Duals 4R70W auto, BW4406 manual T/C
Aussie Locker, Torsen L/S, 4.10's, Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos, Heated seats, Explorer EATC, Trip Computer and consoles

5.0L V8 swap: Click
Supercharger: Click

2003 XLT 2.3L M5OD-R1 reg cab beater, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid
Reply With Quote
+ 0 -
Old 06-15-2006
gatorblue92's Avatar
RF Veteran
I am: Billy Bob
Join Date: Jun 2004
Location: Delaware
Vehicle: 2002 F150
Drive Type: 4x4
Engine: 2.7
Posts: 8,238
Total Props: 0
i have seen a few but not many... and as far as i know all 2.3 or 2.5 motors came with the 7.5
Reply With Quote
+ 0 -
Old 06-15-2006
Unregistered User
Posts: n/a
Total Props: 0
Is that chart specfic to only certain years? At 65 in 4th on my 06 with the 3.73 with 2.3/5 speed runs a little under 3k. In 5th around 2.5K.
Reply With Quote
Old 06-15-2006
Level III Supporter
iTrader: (2)
I am: z s
Join Date: Jun 2004
Location: usa
Posts: 24,936
Total Props: 4
ya mine came with a 7.5 open with 3.23 gears OH ya can we say slow with 32's thats why i have a L/S 3.73 now much better...
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
Open Diff. Question. Alex98 Drivetrain Tech 0 10-09-2010 03:18 PM
Friction Modifier + Open Diff? ChaosFromAbove Drivetrain Tech 4 05-21-2010 06:39 PM
Swapped my limited slip for an open diff... sorta... rngprerunner General Ford Discussion 26 03-11-2010 07:59 PM
Finally no more open diff come sat! Goodysgotacuda General Ford Ranger Discussion 24 07-25-2008 10:26 PM
Welding an open diff. DCRVP Drivetrain Tech 18 03-16-2008 04:12 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 02:06 AM.