FYI: there are several ways to do this swap.
This just happens to be the way I wanted it
done. You can do it with much less work by using
a longer panhard & also different control arms
&/or bushings/heims with the larger 14mm ID to
match the celica-supra rear end bolt size. For
instance T3 makes a 'bolt-in' 4-link & Lateral
bar kit, it would mean you would only have to
swap spring seats.
1. The axle housings I'll be using, two will
have the mounts removed to make into one (SR5 &
MA46) and one extra to build/verify the jig with
(GTS).
2. Here you can see how close in length the
axle housings are.
The MA46/MA47 is only a total of 15mm longer
than both AE86 ones (which are the same length).
3. In this pic you can see the spring seats
are different sizes, the lateral bar/panhard
mount is positioned differently. What's harder to
tell in the picture is that the upper mounts are
spread about 1-2" wider apart on the MA46/MA47
axle housing compared to the AE86.
4. Here's a side view of the SR5 & MA46/MA47
lower mounts. As you can see they are fairly
similar, but the bolt holes & openings are
different sizes. I'll be swapping all 4 upper &
lower mounts from the AE86 axle housing to the
MA46/MA47.
5. Building the jig off of the GT-S axle
housing.
6.
Marshmallows anyone? Ready to cut off the
AE86 SR-5 housing mounts as well as the MA46
mounts.
7. Cutting off the mounts from the AE86 SR-5
housing.
8. Stripped AE86 SR-5 housing. You can see
the spring seats and mounts to be used on the
MA46/MA47 axle housing laying on the ground to
the right of the housing.
9. Cutting off the mounts from the MA46/MA47
housing.
10. The MA46/MA47 housing w/the mounts cut
off. Welds ground flat, and laying in the jig
getting ready to tack the AE86 mounts to it.
11. Fitting the mounts and tacking everything
on.
12. Everything was good so it was time to
weld.
13. Mmm, good beads. (no cleanup/slag removed
in this pic. undoctored)
14. Housing is done, gave it a fresh coat of
paint.
15. Housing mounted in the car, pretty much a
perfect fit so far. Used the MA46/MA47 brake
hard lines with some minor bending/rerouting at
the ends to meet the AE86 backing plates. The
AE86 center brake line threads & fits just fine.
The Energy Suspension bushings fit perfect for
mounting the swaybar (super snug).
16. 3rd member installed, you can see the
steel braided brake line for the AE86 threaded
into the diff side. Brakes are still capped off
until I get the calipers on and get to bleed
everything.
17. Axles & AE86 brake backing plates
installed.
18. Installed my driveshaft, and exactly as I
calculated based on housing/3rd members the
driveshaft had be shortened 21mm or 13/16".
19. Installed my rotors, caliper brackets and
calipers. Bled the brake system and adjusted the
e-brake.
NOTE: The only problem I really ran into
doing this whole swap, I found someone had
installed different wheel studs than factory, it
had some 12 x 1.0mm threaded studs as opposed to
the normal 12 x 1.5mm. So I had to take my
brakes back off and run to the parts store & get
new studs. Installed the new correct thread
pitch studs, filled the diff, put my wheels and
tires on the car and went for a spin. Runs and
drives fine, axle housing is centered like it
should be. Good to go (I hope).
Miscellaneous other pictures, most related to
the swap, and also related to the information
found in the post below.
Here's a picture of the MA46/MA47 (black)
sway bar bracket & Energy suspension swaybar
bracket that came with their bushing kit. You
can see the difference in width of the bracket
(32.4mm MA46/MA47, & 30mm Energy Susp.). I
shaved that extra 2.4mm off with a belt sander
and beveled the edges so it wont cut into the
bushing. They fit the swaybar, housing & bracket
perfectly.
The brake calipers for both the AE86 GT-S &
MA46/MA47. The AE86 Park/E-brake cables clip
right into the MA46/MA47 calipers with no
issues, meaning you can use the MA46/MA47 brakes
on the AE86 pretty easily.
The backing plates are very similar. The
designs of them are slightly different for the 2
different brake caliper brackets. And that the
MA46/MA47 backing plate/dust shield is slightly
larger for the MA46/MA47 rotors which are 1"
larger in diameter.
Brake pads are pretty similar in dimensions,
obviously the largest difference is the
MA46/MA47 pads are straight across the bottom
resulting in a 7mm larger contact patch. But the
MA46/MA47 pads are sadly lacking in selection (afaik).
Fortunately from how it looks you can use AE86
pads with the MA46/MA47 calipers.
OEM toyota bearings, seals & housing gasket
purchased to rebuild differential.
|
CHASSIS &
DIFFERENTIAL CODES OF THE VEHICLES I'M USING PARTS FROM:
MA46/MA47: F312 - For axle housing, 3rd member, axles.
MA67 ____ : F283 - For 4.3 gear set, and possibly LSD
options for it.
AE86 (GT-S): T282 - For replacement solid pinion spacer (TRD
part) & brakes (calipers/mounts/pads).
AE86 (SR-5): S074 - For axle housing mounts & spring seats.
AXLE HOUSING
INFORMATION:
1. Axle housing ends/Backing plate bolt pattern is the same
for both AE86 GT-S & MA46/MA47.
2. Drain/Fill plugs are the same thread/size
(interchangeable) as they are for most Toyota’s. So is the
differential vent.
3. Pinion Flange same bolt pattern. But will require
shortening the driveshaft, or a shorter one.
4. Axle housing lengths (actual backing plate flange).
MA46/MA47 = 1290mm or 50 3/4" (approx.)
AE86 (SR-5 & GT-S) = 1275mm or 50 1/4" (approx.)
5. Sway bar mounts on the MA46/MA47 are the same distance
apart as the AE86.
6. Upper control arm mounts are spaced apart approx 32mm
(+/- 1mm):
MA46/MA47 = 521mm or 20.5"
AE86 = 489mm or 19.25"
7. Lower control arm mounts are spaced the same distance,
but at different angle and position in relation to the
housing.
8. 4-link mount bolt hole diameters are different:
MA46/MA47 = 14mm
AE86 = 12mm
9. Overall axle flange/wheel mounting face length
(difference of approx 12mm):
MA46/MA47 = 1404mm or 55 9/32" (approx.)
AE86 = 1392mm or 54 25/32" (approx.)
AXLE SHAFT
INFORMATION:
1. Axle flange bolt pattern:
Both = 4 x 114.3mm (4 x 4.5")
2. Axle spline Diameter:
MA46/MA47 = 28mm
AE86 = 24(Zenki) - 25.5mm (Kouki) approx.
3. Axle spline count:
MA46/MA47 = 27
AE86 = 23
4. Axle shaft diameter (main portion between splines &
retainer):
MA46/MA47 = 30mm
AE86 = 26mm
5. Axle flange/hub center size:
Both = 60mm
6. Axle flange outside diameter:
MA46/MA47 = 139.4mm
AE86 = 139.0mm
7. Wheel bearings & retainers are the same for both
MA46/MA47 & AE86 GT-S.
BRAKE ROTORS, PADS, AND
CALIPERS INFORMATION:
1. Brake pads from an AE86 can be put on a MA46/MA47. But
NOT the other way around. Because the AE86 brake pads are
not as 'Tall' as the MA46/MA47 brake pads.
2. Brake pad height difference:
MA46/MA47 = 37mm
AE86 = 30mm
3. Brake Rotor overall height:
Both = 48mm
4. Rotor Hat thickness @ axle flange:
MA46/MA47 = 5.4mm
AE86 5.25mm
5. Rotor Hat inner diameter:
MA46/MA47 = 141.3mm
AE86 = 139.7mm
6. Rotor Hat outside diameter:
Both = 159mm
7. Rotor outside diameter:
MA46/MA47 = 258mm
AE86 = 231mm
8. Rotor thickness:
Both = 10.1 - 10.2mm
9. Calipers, Bracket/Mounts, and Backing plates are
different. But as a set, are swappable to either axle
housing if using all the parts from either the AE86 or
MA46/MA47 allowing you to run either MA46/MA47 or AE86 rear
brakes on both axle housings.
10. Calipers on both MA46/MA47 & AE86 use the same style
Park/E-brake cable attachment.
(Note: All measurements approx. AE86 rotors measured were
aftermarket and may be slightly different than OEM.)
OEM/AFTERMARKET LSD OPTIONS
For the US market little or no Celica-Supras had an OEM lsd
equipped, where as in Canada most did come with an OEM lsd.
There are many more options for LSD available for the
MA46/MA47 Celica-Supra than most realize, here's several I
figured out. They ALL require using different carrier
bearings with a larger bearing I.D. to fit the carrier (see
bearing info below). They must also be for a 7.5" F-series
toyota diff and designed for 27 spline axles.
1. OEM clutch type LSD from MKII 82-86 Celica-Supra's
2. OEM Torsen (gear) LSD from the 'JDM' Altezza
(sxe10/gxe10)
3. Any aftermarket (Cusco, Kaaz, Tomei, AT-S, ect) LSD for
the Toyota Car 7.5" differential (Chassis codes IE: MA6x
MKII Celica-Supra, JZX90 Chaser (non-turbo), SXE10/GXE10 JDM
IS200 Altezza w/Beams)
4. Any aftermarket Locker or LSD for the front of the Toyota
4x4 pickups & 4-runners. (IE: Detroit Truetrac torsen LSD,
Detroit Locker, ARB air locker, Powertrax Lock-right &
No-slip)
AFTERMARKET SWAY BAR BUSHING
INFORMATION:
As noted above (See: line 5 under 'Axle Housing
Information'), the sway bar mounts on the Celica-Supra
axle are the same distance apart as the AE86 rear axle. That
means you are able to use the AE86 sway bars with the
MA46/MA47 sway bar mounts & brackets. You just need the
correctly sized bushings & a minor modification to do so.
I found that the universal sway bar bushings from Energy
Suspension (or Prothane possibly) should allow you to fit
different size AE86 sway bars to the Celica-Supra rear axle
sway bar mounts & brackets. I purchased one of the Energy
Suspension kits and verified fitment with my AE86 sway bar.
And found that the modification required of Celica-Supra
sway bar bracket is to shave 2mm off the width of the
bracket (1mm each side). For the bushing to fit correctly.
AVAILABLE SIZES & PART NUMBERS.
Energy Susp._| Prothane
16mm 9.5120 | 19-1115
17mm 9.5121 | 19-1116
18mm 9.5122 | 19-1117
19mm 9.5123 | 19-1118
20mm 9.5124 | 19-1119
21mm 9.5125 | 19-1120
22mm 9.5126 | 19-1121
23mm 9.5127 | 19-1122
24mm 9.5128 | 19-1123
25mm 9.5129 | 19-1124
MEASUREMENTS OF MA46/MA47 REAR SWAY BAR BUSHING
BRACKET:
Height = 31mm
Length = 31mm
Width = 32.3mm
Metric conversion/Size notes for determining bushing (inches
are approx.):
31.0mm = 1.22" | 1-7/32"
32.3mm = 1.27" | 1-17/64"
20.0mm = 0.78" | 25/32"
DIFFERENTIAL SETUP
INFORMATION:
MK1 1979-1981 Celica-Supra F-series (solid) specifications:
Ring Gear Backlash = 0.005-0.007" (.13-.18mm)
Ring Gear Bolt Torque = 67-75 ft lbs
Pinion Nut Torque = 80 ft lbs (to MAX of 173 ft lbs for
crush sleeve)
Pinion Bearing Preload = 7.9-ll.2 in lbs
Carrier Bearing Cap Bolt Torque = 51-65 ft lbs (I go to 58
ft lbs)
Total Preload = 3.5-5.2 in lbs (on top of/in addition to
pinion preload)
Axle/Backing Plate Nuts = 44-53 ft lbs.
MK2 82-86 Celica Supra F-series (IRS) specifications:
Ring Gear Backlash = 0.005-0.007" (.13-.18mm)
Ring Gear Bolt Torque = 71 ft lbs
Pinion Nut Torque = 80 ft lbs (to MAX of 174 ft lbs for
crush sleeve)
Pinion Bearing Preload = NEW 10.4-16.5 in lbs (12-19 kg cm)
/ USED 6.2-8.7 in lb (6-10 kg cm)
Carrier Bearing Cap Bolt Torque = 58 ft lbs
Total Preload = 3.5-5.2 in lbs (4-6 kg cm) - on top of/in
addition to pinion preload
5-04 2wd Tacoma/Truck rear axle F-series (solid)
specifications:
Ring Gear Backlash = 0.005-0.007" (.13-.18mm)
Ring Gear Bolt Torque = 71 ft lbs
Pinion Nut Torque = 80 ft lbs (to MAX of 174 ft lbs for
crush sleeve)
Pinion Bearing Preload = NEW 12.2-18.3 in lbs (14-21 kg cm)
/ USED 5.2-8.7 in lb (6-10 kg cm)
Carrier Bearing Cap Bolt Torque = 63 ft lbs
Total Preload = 3.5-5.2 in lbs (4-6 kg cm) - on top of/in
addition to pinion preload
Since the specs are so close, and there is a reason they
changed as production went on. I'll probably just set it up
to the newest 2wd Tacoma specs. The only real difference is
that there is slightly more preload, but after the bearings
wear in that'll be a non-issue.
TOYOTA PART NUMBERS - BEARINGS & SEALS:
Key: *** means part # is same between MA46/MA47 and AE86.
MA46/MA47 part numbers.
90366-30022-77 | Front Pinion Bearing
90366-35023-77 | Rear Pinion Bearing
90368-45066-77 | Carrier Bearing (x2) w/o lsd
90311-38047 | Pinion Seal w/o lsd
41231-22010 | Crush Sleeve ***
90311-52059 | Rear Axle Seals (x2) ***
04421-30011 | Rear Axle Bearings (x2) ***
90179-18001 | Pinion Nut ***
90311-38010 | Pinion Seal w/lsd
90368-50024 | Carrier Bearing (x2) w/lsd
These part #'s below may be necessary to use an LSD in
the F-series housing.
MA67 Part Number.
90368-45002 | Carrier Bearing
OR possibly ???
Tacoma/4-runner part number and information.
90368-50006 | Carrier Bearing (front differential)
Part # is from 1st gen Tacoma/2nd & 3rd gen 4-runners.
(Note: All other bearings listed for the Tacoma/4runner
front differential are different & not applicable to the RWD
F-series differential. 2wd pickup/Tacoma/4-Runner rear
differentials are 7.5" (except Tacoma Pre-runner) but some
have different bearing part #'s than the 4wd front diff and
MA46/MA47/MA67.)
AE86 Part Numbers.
90368-34049 | Front Pinion Bearing
90368-30002 | Rear Pinion Bearing
90368-41050 | Carrier Bearing (x2)
90311-38015 | Pinion Seal
90179-18001 | Pinion Nut ***
41231-22010 | Crush Sleeve ***
90311-52059 | Rear Axle Seals (x2) ***
04421-30011 | Rear Axle Bearings (x2) ***
Timken Part Numbers - Bearings & Seals.
Key: *** means part # is same between MA46/MA47 and AE86.
Timken Replacement part #'s found on
http://www.timken.com in
their catalogs.
http://www.timken.com/en-us/pr....aspx
(Bearing & Seal
Application Catalogs.)
MA46/MA47 & MA67
17887 | Carrier Bearing Cone (bearing) - w/o LSD
17831 | Carrier Bearing Cup (race) - w/o LSD
32010X | Carrier Bearing Assy - w/LSD (Listed for MA67
F-series IRS Diff's)
32307 | Pinion Bearing (inner)
30306M | Pinion Bearing (outer)
1177 | Pinion Seal
514000 | Rear Axle Bearing ***
1955 | Rear Axle Seal ***
Tacoma/4-runner
32010x | Carrier Bearing (No actual listing/part # in the
timken catalog.) <-- Not 100% confirmed yet!
I have measured ID & thickness of bearings on my old 4x4
tacoma front diff carrier (1.969"/50mm I.D. and .787"/20mm
Wide). Using those measurements the following bearing should
be the right one. At least from what I can tell.
AE86
SET 45 | Carrier Bearings (cone/race individually =
LM102949/LM102910)
HM88649 | Pinion Bearing cone (inner bearing)
HM88610 | Pinion Bearing cup (inner race)
M86649 | Pinion Bearing cone (outer bearing)
M86610 | Pinion Bearing cup (outer race)
1176S | Pinion Seal
514000 | Rear Axle Bearing ***
1955 | Rear Axle Seal ***
TIMKEN BEARING DIMENSIONS:
Pinion & Carrier Bearing Dimensions only (looked it up for comparison/verification).
(Note: for all bearing width's refer to 'T' in timken
catalog.)
MA46/MA47 & MA67
17887/17831 | Carrier Bearing Cone/Cup w/o LSD
1.781" - I.D.
3.149" - O.D.
0.781" - Width
32010X | Carrier Bearing Assy w/LSD
1.969" - I.D.
3.150" - O.D.
0.787" - Width
32307 | Pinion Bearing (inner)
1.378" - I.D.
3.150" - O.D.
1.289" - Width
30306M | Pinion Bearing (outer)
1.181" - I.D.
2.835" - O.D.
0.817" - Width
Tacoma/4-runner
32010X | Carrier Bearing Assy w/LSD (Same as ^
MA46/MA47/MA67) <-- Not 100% confirmed yet!
1.969" - I.D.
3.150" - O.D.
0.787" - Width
AE86
SET45 (LM102949/LM102910) | Carrier Bearings
1.781" - I.D.
2.891" - O.D.
0.770" - Width
HM88649/HM88610 | Pinion Bearing Cone/Cup (inner)
1.375" - I.D.
2.844" - O.D.
1.000" - Width
M86649/M86610 | Pinion Bearing Cone/Cup (outer)
1.188" - I.D.
2.531" - O.D.
0.844" - Width
