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What Is the Stock Gearing in a 1991 Mazda Navajo UPDATED

What Is the Stock Gearing in a 1991 Mazda Navajo

Usage:

The Ford viii.8-Inch beam came in a few different vehicles including the:

Ford Mustang (1986-2014)
Ford Bronco (1983-1996)
Ford F-150 (1983-2012)
Ford Ranger (1990-2011 4.0L models)
Ford Aerostar (1989-1997)
Ford Explorer (1991-2001) (The Ford Explorer Sport yet used the solid rear viii.8 until 2003)

8.viii-Inch Axle History:

First Utilise: Ford began using the 8.8-Inch axle in trucks in 1983.

Ranger Chassis Cabs: Ford began using the 8.8-Inch axle in Rangers effectually 1986 on 'incomplete vehicles' aka 'chassis cabs'. The 1986-1988 (chassis cab) viii.viii-Inch axles are distinctive as they are the merely 8.8-Inch Ranger rears that accept no provisions for a RABS sensor.

Ranger 4.0L Models: The Ford 8.8-Inch beam began regular use in the Ford Ranger starting with the 1990 4.0L models. All four.0L Ford Rangers are equipped with 8.8-Inch axles.

1998-2011 Super Cabs: 1998-2011 Ford Ranger super cabs regardless of engine size are frequently equipped with 8.8-Inch axles.

FX4 Models: All Ford Ranger 8.8-Inch axles have 28-spline axle shafts except for the 2002 FX4 and 2003 & newer FX4 Level II models which had 31-spline shafts.

The FX4 Ranger was introduced in 2002 and e'er came with 4.10 gears only. The 31-spline Torsen eight.8-inch axle came only with the 2002 FX4 and 2003-up FX4 Level II and more than recently was a split up option. The 2003-upward FX4 (non-Level Two) is substantially the same as the 1998-2002 Off-Road except that a regular Ford limited-slip in a regular 8.8-inch was included.

Ford Explorer: The 8.8-Inch beam came in Ford Explorers (and Mazda Navajo) in 1990 as a 1991 model year. The Ford Explorer used it until it switched to an independent rear suspension in 2002. The exception is the 2002-2003 Ford Explorer Sport which all the same used the solid rear 8.8-Inch axle.

Ford Aerostar: The eight.viii-Inch axle was used in 2WD 4.0L Ford Aerostars, but the All-Wheel-Drive (AWD) Ford Aerostar was equipped with the 7.v-Inch axle.

Ford F-150 / Bronco: The Ford F-150 used the Ford 8.eight-Inch beam From 1983-2012 except for 5.4L (including Lightning) and some 4×4 super cabs and higher GVWR models which were equipped with the heavier-duty 9.75-Inch rear beam. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline vans.

Ford Car Usage: The viii.viii-Inch is too used in other Ford products such every bit Ford Mustang's, Ford Thunderbird's, Ford Crown Victoria's, and their equivalent Mercury and Lincoln products.

Mustang Note: Mustang owners have been known to have the left axles from 1990-1992 Ford Ranger 8.8-Inch axles to convert their axles from a 4-lug to a 5-lug wheel bolt pattern, or to replace an axleshaft.

Bicycle Commodities Pattern: Ford Rangers, Explorers and Mustangs have a v×4.5 bicycle bolt pattern. F-150 and Bronco accept a 5×5.5 cycle bolt pattern.

Miscellaneous:A wide range of gear ratios is available, from three.08'due south up to half dozen.14's. An every bit wide array of differentials is besides bachelor from open carriers to limited slips to lockers and spools.

eight.8-Inch axles can have either 28-spline or 31-spline axles.

Gear sets are interchangeable between axles, regardless of the spline count. Differentials, withal, are non.

Disc Brakes:

The 1995-2003 Explorer 8.8-Inch axles come with disk brakes.
The 2010-2011 Ford Ranger rear axles come with disc brakes.
The 1999-2012 Ford F-150 8.8-Inch axles come with disc brakes.

The axle above in an viii.8-Inch from a 1995+ Ford Explorer. Y'all tin quickly identify it equally an Explorer axle due to its rear disk brakes and the jump perches mounted beneath the beam tube instead of on the top. When swapping an Explorer 8.viii-Inch beam in to a 4WD Ranger y'all need motion the leap perches to the top of the axle tube.

Beam Shaft Splines:

Ford Mustang – The Ford Mustang 8.eight-Inch axle from 1986-2004 used 28-spline shafts. The 2005-2014 Ford Mustang 8.8-Inch beam used 31-spline shafts.

Ford Ranger – The Ford Ranger 8.viii-Inch axle used 28-spline shafts.

Ford Ranger FX4 – The 2002 FX4, 2003-2007 FX4 Level Ii, and 2008-2009 FX4 Off Road models had 31-spline shafts.

Ford F-150 / Bronco – The Ford F-150 and Ford Bronco 8.eight-Inch axles had 31-spline shafts.

Ford Aerostar – The Ford Aerostar 8.8-Inch axles had 28-spline shafts.

Annotation: Increasing from a 28-spline to a 31-spline axle allegedly increases force of the beam shaft by 34%, still I'll go by the capacity ratings of the beam assemblies provided past the manufacturer. Ford Rates the Ranger axle at 2750 lbs and the Explorer axle at 3200 lbs this is a xvi% increase in strength, which absolutely may be as conservative equally the estimate of axle strength. The Important thing most the Explorer beam associates (besides its 31-spline shafts) is that its axles are larger in bore at the outer bearing journal AND the larger diameter bearings used.

Axle Tube Diameters:

The 1990-2009 Ford Ranger 28-spline 8.viii-Inch beam tube is 2.80 inches in diameter.
The 2010-2011 Ford Ranger 28-spline 8.8-Inch beam tube is 3.25 inches in diameter.
The Ford Ranger 31-spline eight.eight-Inch axle tube is iii.25 inches in bore.
The Ford Explorer 31-spline 8.viii-Inch axle tube is 3.25 inches in diameter.
The Ford F-150 / Bronco 31-spline viii.8-Inch axle tube is 3.25 inches in bore.
The Ford Mustang 8.eight-Inch Axle tube is ii.80 inches in diameter.

Axle Bearings:

Ford Ranger 8.8-Inch 28-spline axle bearing ID= 1.399″, OD= 2.25″ (1563 bearing)
- 2010-2011 28-spline viii.viii-Inch axles axles utilize the larger 1559 bearing below.
Ford Explorer 8.8-Inch 31-spline axle bearing ID= 1.618″, OD= ii.533″ (1559 bearing)
Ford F-150 / Bronco 31-spline axle begetting ID= 1.618″, OD= 2.533″ (1559 bearing)

NOTE: The 28-spline 8.8-Inch axle uses the same size axle bearing (at the wheel end of the beam) as the Ford 7.5-Inch axle. Many Ranger owners take purchased new beam bearings only to notice out that they were sold the bearing for the larger 31-spline 8.8-Inch axle. The exception is the 2010-2011 Ford Ranger 8.8-Inch rear axle. Information technology uses the larger axle begetting.

Axle Width Differences:

1990-1992 Ford Ranger viii.viii-Inch Beam – 56.50 inches
1993-2009 Ford Ranger 8.viii-inch Axle – 58.fifty inches
2010-2011 Ford Ranger 8.8-Inch Axle – 58.fifty inches *
1991-2003 Ford Explorer 8.viii-Inch Beam – 59.625 inches
1989-1997 Ford Aerostar viii.eight-Inch Beam – 62.fifty inches
1983-1996 Ford Bronco viii.8-Inch Axle – 65.125 inches
1986-1993 Ford Mustang 8.8-Inch Beam – 59.25 inches
1994-2004 Ford Mustang 8.8-Inch Axle – 61.25 inches
1989-1999 Ford Crown Victoria 8.eight-Inch Beam – 62.50 inches

* The 2010-2011 Ford Ranger 8.viii-inch axle is actually narrower and has shorter shafts than the 2009 and earlier models. Ford used rear disc brakes on the 2010-2011 Rangers, so Ford Shortened the beam housing and shafts to compensate for the extra width created by the disc restriction setup. These shafts are not going to work in a 2009 and older Ford Ranger eight.8-inch axle.

For more than data, cheque out ' 2010 Ford Ranger eight.8-Inch Axle vs 2004 eight.eight-Inch Axle '

Specifications:

Ford 8.8-Inch Axle – Specifications – Ring Gear & Differential
Ring Gear Diameter	8.viii Inch
Ring Gear Bolts	(10) vii/sixteen″ x 20
Differential Cover Bolts	10
Pinion Stem	i.626 Inches
Pinion Splines	30
Pinion Bearing Preload (New)	14-nineteen in lb
Pinion Bearing Preload (Used)	8-x in lb
Back Lash	.011″-.016″
Ring Gear Bolt Torque	70-85 ft lb
Bearing Cap Bolt Torque	70-85 ft lb
Fluid Type	Use hypoid gear lubricant SAE 75W80 or 80W90 (Add together two oz. friction modifier to axles with express slips)
Fluid Capacity	5 pints (expect to use 2-3 quarts if changing the fluid. More if you take an aftermarket heavy duty embrace.
When installing a new band gear, employ the torque specifications recommended by the ring gear manufacturer.

Ford 8.8-Inch Axle – Specifications – Axle Shaft
Vehicle	Side / Length	Spline / Diameter	Axle Begetting
1983-1992 Ford Ranger	Right Manus / 26.250 Inch	28-Spline / 1.21 Inch	1563
1983-1992 Ford Ranger	Left Hand / 29.125 Inch	28-Spline / i.21 Inch	1563
1993-2009 Ford Ranger	Right Hand / 27.250 Inch	28-Spline / 1.21 Inch	1563
1993-2009 Ford Ranger	Left Hand / xxx.125 Inch	28-Spline / 1.21 Inch	1563
2010-2011 Ford Ranger	Correct Hand / 27.000 Inch	28-Spline / one.21 Inch	1559
2010-2011 Ford Ranger	Left Paw / 29.9375 Inch	28-Spline / ane.21 Inch	1559
2002-2009 Ford Ranger FX4	Right Paw / 27.250 Inch	31-Spline / 1.32 Inch	1559
2010-2009 Ford Ranger FX4	Left Hand / 30.125 Inch	31-Spline / 1.32 Inch	1559
1995-2002 Ford Explorer	Right Hand / 27.620 Inch	31-Spline / 1.32 Inch	1559
1995-2002 Ford Explorer	Left Manus / 30.500 Inch	31-Spline / ane.32 Inch	1559
All of these 8.8-Inch axles utilise i/2-inch wheel studs. All of these viii.8-Inch axles have a 5×4-i/2 (5×4.5) cycle commodities blueprint

Ford Ranger & Explorer 8.viii-Inch Axle Dimensions
	1983-1992 Ford Ranger	1993-2009 Ford Ranger	2010-2011 Ford Ranger W/Discs	Ford Explorer
Width WMS-WMS	56.50 inches	58.50 inches	57.50 inches	59.625 inches
Axle Tube Diameter	2.80-inches	2.80-inches (28-spline) 3.25-inches (31-spline)	3.25-inches	3.25-inches
Pinion Commencement Right Of Middle	2-inches	2-inches	2-inches	two-inches
Pinion Beginning Below Centerline	1.50-inches	1.50-inches	one.l-inches	1.fifty-inches
Pinion Length (axle centerline to u-joint centerline):	xi-v/eight inches	xi-5/8 inches	11-v/8 inches	xi-five/8 inches
Lesser Of Housing From Centerline	5-3/iv inches	v-3/iv inches	5-3/4 inches	5-3/4 inches
Stock Spring Perch Width	38-one/2 inches	38-1/2 inches	38-ane/ii inches	38-1/2 inches
Beam Spline / Diameter	28 / one.21 inches	28 / 1.21 inches	28 / 1.21 inches	31 / 1.32 inches
Pinion Stem Diameter	1.626 inches	i.626 inches	1.626 inches	1.626 inches
Ring Gear Diameter	8.80 inches	8.lxxx inches	viii.lxxx inches	8.80 inches
Ford Ranger FX4 with a 31-spline 8.viii-Inch axle should have a 1.32-inch diameter axle shaft.

Identification From Beam Tag:

The axle tag is bolted to the rear differential cover, and is held on with one of the embrace bolts.

From the example above, you can see that the lower line shows the gear ratio, and axle diameter.

So from that instance, nosotros can see that the tag in a higher place is a 7.five inch axle with 3.73 gears.

The tag above is a 8.viii inch axle, and too has three.73 gears, but there is a 'L' between the 'iii' and the '73'. This means that it is a Express Skid axle.

The tag above is from a 8.eight inch rear beam in a 2001 Ford Ranger 4×iv super cab with iv.x gears.

Federal Compliance Sticker:

Another way to identify the axle in a Ford Ranger is from the Federal Compliance Sticker in the door jamb.

If you look at the 'AXLE' section on the characterization above, you lot'll see that this Ranger has a 'F7' beam lawmaking. Using the nautical chart below, nosotros know that this axle is a 7.5-Inch axle with a iv.10 limited sideslip.

Axle Codes:

Ranger
Code	Description	Capacity	Ratio
72	open 6-7/8″	2200	three.08
74	open six-7/8″	2200	3.45
82	open seven.v″	2750	3.08
84	open up vii.v″	2750	three.45
85	open 7.5″	2750	3.55
86	open vii.5″	2750	three.73
87	open 7.5″	2750	four.ten
89 (1992-1998)	open 7.5″		4.10
89 (1999-2001)	open vii.five″		iv.56
91	open viii.eight″	2750	iii.27
92	open 8.8″	2750	3.08
95	open up eight.eight″	2750	3.55
96	open 8.8″	2750	three.73
97	open 8.eight″	2750	4.ten
98	open 8.eight″	2750	4.56
F4	50/Southward 7.5″	2750	three.45
F5	L/Southward 7.v″	2750	3.55
F6	50/S seven.five″	2750	3.73
F7	L/Due south 7.5″	2750	4.ten
K6	L/S 8.8″		4.10
R5	L/S 8.eight″	2750	3.55
R6	L/S 8.viii″	2750	three.73
R7	L/S 8.8″	2750	4.x
R8	L/S 8.8″	2750	4.56
(NOTE: 4.56 geared axles '99-up are 31-spline)

What Is the Stock Gearing in a 1991 Mazda Navajo UPDATED