OEM Brake Calipers and the 93+ Turbo myth

[GDII]

I have noticed a lot of people getting very confused about the OEM SW20 brake caliper names, years and models from which they come from and what is the upgrade. This post is to help clear up that information the internet has provided.

The information about the 93+ Turbo brakes being the best OEM upgrade is true and also a myth. Especially when it comes to the NZ market of cars as predominantly our cars are JDM with some NZDM cars thrown in there. This information applies to both JDM and NZDM cars.

To clarify this below is a list of calipers, the cars they came on and the years they were installed on.

USDM cars are registered 1 year ahead of the real calendar year they were built. So a 91 USDM car was actually built in Japan in 1990. Keep this in mind when we are looking at the information.

We will start with the USDM cars then move onto the JDM cars.

DISCLAIMER: Any information contained in this document is to the best of my knowledge. Please consult your Toyota Dealer for exact part numbers for your specific car. I am not liable for any error in this document or any damage caused by following it. I know some JDM imports are registered as a 92 when really they are a 91.

TL;DR
In summary:
The USDM NA had single pot front calipers from 91-95 and used the same rotor as all G/G-Limited and GTJDM 89-91 cars.
The USDM NA had single pot rear calipers from 91-95 and used the same caliper and rotor as all G/G-Limited and GT JDM 89-91 cars.
The USDM Turbo had the same calipers and rotors from 91-92 as the 89-91 JDM G/G-Limited and GT cars.
The USDM Turbo had the same calipers and rotors from 93-95 as the 92-99 JDM G/G-Limited and GT/GT-S cars. Hence the 93+ Turbo brakes myth.

Brake pads are also something that is odd. Front brakes have unique pads for the caliper type but the rear brakes use the same pad for all years and models.

If you want to upgrade to the so called '93+Turbo' brakes you can find these brakes on all 92-99 JDM G/G-Limited and GT/GT-S cars that we have in NZ. No need to specifically look for a 92-99 GT/GT-S as the G/G-Limited had the same brakes.

Revisions of the JDM/NZ Australia/Europe/UK SW20 are as follows and are month specific. So there are overlaps in the revisions.
Revision 1 December 1989 to December 1991 89/12-91/12
Revision 2 December 1991 to November 1993 91/12-93/11
Revision 3 November 1993 to June 1996 93/11-96/06
Revision 4 June 1996 to December 1997 96/06-97/12
Revision 5 December 1997 to August 1999 97/12-99/08

EDIT: In addition to the JDM and USDM model of car the UK and Europe got a 3SFE powered version which it appears also had the same brakes as the JDM 3SGE and 3SGTE powered cars. This was only sold up until 1992 but still got the larger brake upgrade. Only the 5SFE version got the single pot front and kept the small brakes all the way through production.

91-95 USDM SW21 MR2 NA

Front Right Caliper
Part Number: 47730-17080
Stamped Code: 51-25 (51 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 1
Pad: Unique to this caliper pair

Front Left Caliper
Part Number: 47750-17080
Stamped Code: 51-25 (51 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 1
Pad: Unique to this caliper pair

Front Rotor L/R
Part Number: 43512-17040 or 43512-17070
Diameter: 257mm
Thickness: 25mm
Minimum thickness: 23mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø PCD:114.3mm
Hub Diameter: 145.8mm
Height:47.5mm

Rear Right Caliper
Part Number: 47730-17080
Stamped Code: 16V-R (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Left Caliper
Part Number: 47750-17100
Stamped Code: 16V-L (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Rotor L/R
Part Number: 43512-17040 or 43512-17070
Diameter: 263mm
Thickness: 16mm
Minimum thickness: 15mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 142mm
Height:46.5mm

91-92 USDM SW20 MR2 TURBO

Front Right Caliper
Part Number: 47730-17090
Stamped Code: 36T25 R(36 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Left Caliper
Part Number: 47750-17090
Stamped Code: 36T25 L (36 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Rotor L/R
Part Number: 43512-17080
Diameter: 258mm
Thickness: 25mm
Minimum thickness: 24mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 145.8mm
Height:47.5mm

Rear Right Caliper
Part Number: 47730-17080
Stamped Code: 16V-R (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Left Caliper
Part Number: 47750-17100
Stamped Code: 16V-L (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Rotor L/R
Part Number: 42431-17030
Diameter: 263mm
Thickness: 16mm
Minimum thickness: 15mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 142mm
Height:46.5mm

93-95 USDM SW20 MR2 TURBO AKA 93+ TURBO

Front Right Caliper
Part Number: 47730-17140
Stamped Code: 36T30 R(36 = Piston Diameter, 30 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Left Caliper
Part Number: 47750-17140
Stamped Code: 36T30 L (36 = Piston Diameter, 30 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Rotor L/R
Part Number: 43512-17080
Diameter: 275mm
Thickness: 30mm
Minimum thickness: 28mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 145.8mm
Height:47.5mm

Rear Right Caliper
Part Number: 47730-17130
Stamped Code: 22V-R (22 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 22V and 16V

Rear Left Caliper
Part Number: 47750-17130
Stamped Code: 22V-L (22 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 22V and 16V

Rear Rotor L/R
Part Number: 42431-17060
Diameter: 281mm
Thickness: 22mm
Minimum thickness: 21mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 142mm
Height:46.5mm

89-91 JDM SW20 G, G-Limited, GT and GT-S

Front Right Caliper
Part Number: 47730-17090
Stamped Code: 36T25 R(36 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Left Caliper
Part Number: 47750-17090
Stamped Code: 36T25 L (36 = Piston Diameter, 25 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Rotor L/R
Part Number: 43512-17040 or 43512-17070
Diameter: 258mm
Thickness: 25mm
Minimum thickness: 24mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 145.8mm
Height:47.5mm

Rear Right Caliper
Part Number: 47730-17100
Stamped Code: 16V-R (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Left Caliper
Part Number: 47750-17100
Stamped Code: 16V-L (16 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 16V and 22V

Rear Rotor L/R
Part Number: 42431-17030
Diameter: 263mm
Thickness: 16mm
Minimum thickness: 15mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 142mm
Height:46.5mm

92-99 JDM SW20 MR2 G, G-Limited, GT and GT-S

Front Right Caliper
Part Number: 47730-17140
Stamped Code: 36T30 R(36 = Piston Diameter, 30 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Left Caliper
Part Number: 47750-17140
Stamped Code: 36T30 L (36 = Piston Diameter, 30 = Rotor thickness)
Number of Pistons: 2
Pad: Unique to this caliper pair

Front Rotor L/R
Part Number: 43512-17080
Diameter: 275mm
Thickness: 30mm
Minimum thickness: 28mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 145.8mm
Height:47.5mm

Rear Right Caliper
Part Number: 47730-17130
Stamped Code: 22V-R (22 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 22V and 16V

Rear Left Caliper
Part Number: 47750-17130
Stamped Code: 22V-L (22 = Rotor thickness)
Number of Pistons: 1
Pad: Same for 22V and 16V

Rear Rotor L/R
Part Number: 42431-17060
Diameter: 281mm
Thickness: 22mm
Minimum thickness: 21mm
Brake Disc Type: Internally Vented
Hub Bore Diameter: 62.1mm
Number of Holes: 5
Bolt Hole Circle Ø:114.3mm
Hub Diameter: 142mm
Height:46.5mm

Photos for reference mostly credited from MR2 Ben. A great source of quality parts at decent prices from the other side of the world.

USDM Brake Calipers
91-95 SW21 NA Front Brake Caliper 51-25

91-95 Front Caliper 51-25.jpeg (61.43 KiB) Viewed 10148 times

91-95 SW21 NA Rear Brake Caliper

91-95 SW21 NA 16V R.JPG (85.74 KiB) Viewed 10148 times

91-95 SW21 NA 16V L.JPG (115.83 KiB) Viewed 10148 times

91-92 SW20 Turbo Front Brake Caliper 36T25

91-92 SW20 Turbo 36T25 R.JPG (117.35 KiB) Viewed 10148 times

91-92 SW21 NA and SW20 Turbo Rear Brake Calipers 16V

91-92 SW20 Turbo 16V R.JPG (85.74 KiB) Viewed 10148 times

91-92 SW20 Turbo 16V L.JPG (115.83 KiB) Viewed 10148 times

93-95 SW20 Turbo Front Brake Calipers 36T30

93-95 SW20 Turbo 36T30 R.JPG (130.65 KiB) Viewed 10148 times

93-95 SW20 Turbo 36T30 L.JPG (125.29 KiB) Viewed 10148 times

93-95 SW20 Turbo Rear Brake Calipers 22V

93-95 SW20 Turbo 22V R.JPG (98.19 KiB) Viewed 10148 times

93-95 SW20 Turbo 22V L.JPG (89.22 KiB) Viewed 10148 times

JDM Brake Calipers
89-91 SW20 G, G-Limited, GT and GT-S Front Brake Calipers 36T25

89-91 G-Limited GT GTS 36T25 L.JPG (117.35 KiB) Viewed 10148 times

89-91 SW20 G, G-Limited, GT and GT-S Rear Brake Calipers 16V

89-91 G-Limited GT GTS 16V R.JPG (85.74 KiB) Viewed 10148 times

89-91 G-Limited GT GTS 16V L.JPG (115.83 KiB) Viewed 10148 times

92-99 SW20 G, G-Limited, GT and GT-S Front Brake Calipers 36T30

92-99 G-Limited GT GTS 36T30 R.JPG (130.65 KiB) Viewed 10148 times

92-99 G-Limited GT GTS 36T30 L.JPG (125.29 KiB) Viewed 10148 times

92-99 SW20 G, G-Limited, GT and GT-S Rear Brake Calipers 22V

92-99 G-Limited GT GTS 22V R.JPG (98.19 KiB) Viewed 10148 times

92-99 G-Limited GT GTS 22V L.JPG (89.22 KiB) Viewed 10148 times

Brake Rotor size comparison
Left are fronts and right are rears.

JDM Master Cylinder non-ABS

89-91 7/8th Steel body

89-91 JDM 7-8 Master Cylinder.jpg (224.75 KiB) Viewed 10120 times

92-99 15/16th Aluminium body

92-99 JDM 15-16 Master Cylinder.jpg (223.48 KiB) Viewed 10120 times

[ClanFever]

Very good write up Phil, perhaps we should give you more tasks and mr2 myths to debunk... like snap oversteer... which is all on the driver.

Using the 89-91 brakes, with braided lines, EBC yellow brake pads, generic repco corolla spec non-slotted discs and a MC stopper, I still managed to bruise myself with the seatbelt at Manfield, due to the stopping power. The tyres I had on were super grippy. If you put on bigger brakes and you have crap tyres, don't expect to have better brakes.

[GDII]

Ha, snap oversteer....

Yes the 89-91 brakes do work well but can be prone to fade if hammered for too long. I mean, look at the mass difference in the rotors vs the early models. They will heat soak before the 92+ do. The caliper piston size is the same for both setups even though the master cylinder went from 7/8 to 15/16.

[Jabeo]

+1 this is going into my MR2 bookmarks, great write up and very helpful

[85AW20v]

I bet that took some time!! You might want to look at your labeling/position of the last two photo's.....

[GDII]

Thank Simon. Fixed. The forum does odd things when you add extra attachments after the first time you post it.

The post only took an hour or so but my research has spanned 3-4 years.

[Alsw20]

Yes so much about the decent tyres before a brake upgrade Clanfever.

People seem to think that bigger brakes will make you stop in a shorter distance. When in actual fact if you can already lock the wheels or cycle the ABS, you can’t stop any faster no matter how large a set of brakes you put on.

You have two contact points when braking. The pad and the rotor. Then the tyre and the ground. If you have locked the wheel or the ABS is flat out preventing wheel lock, the only thing that will pull you up quicker is a stickier tyre.