History
Launched in September 1991, Toyota made a limited number of 5,000 special edition GT-Fours to meet the FIA regulations, at the time requiring road going homologation models to be manufactured in order to allow the car to be used in WRC rallying.
In Japan it was called the GT-Four RC, while in Europe it was called the GT-Four Carlos Sainz and Australia got the GT-Four Group A Rallye.
The exterior is visually different to the standard ST185; instead of a scoop, the bonnet has a large central air vent and two smaller rear facing vents (to expel hot air). It also has a small forward facing round scoop to provide cooling air to the cam belt housing (found to melt during rallying on older models).
The front bumper has bigger openings for greater cooling efficiency, and is mounted on a lightweight aluminium inner bar.
Out of the 5,000 homologation models produced…
1,800 were for the Japanese domestic market
3,000 were allocated to Europe
150 were delivered to Australia
25 were delivered to Singapore
25 made a trip to New Zealand and other small markets\
Modifications
INTERIOR
- Recaro SR3 seats
- Haltech Racepak digital dash
- Trackart custom made rear strut / harness bar
- Personal Grinta 350mm suede steering wheel
- TRD leather gear knob
- Leather gear boot
EXTERIOR
- Carbon mirrors (moulded direct from genuine TTE WRC items)
WHEELS, TYRES and SUSPENSION
- 17" Oz Racing wheels
- Yokohama Advan AD08R tyres
- Volk Racing wheel nuts
- Whiteline rear camber bolts
- BC Racing coil over shocks and sprinngs
- RDA Front slotted and dimpled rotors
- Front QFM A1RM brake pads
- Polyurethane differential mount
- Polyurethane rear sub frame mounts
- Polyurethane swaybar mounts
ENGINE
- Genuine Toyota engine mounts
- New water pump
- New timing belt and tensioners
- ARP head bolts
- Cometic MLS head gasket
- Complete reconditioning of cylinder head to factory specs
ECU AND IGNITION
- Haltech Platinum Sport 1000 ECU
- Haltech boost control solenoid
- Haltech Flex fuel sensor
(in order to run on E85 Ethanol and 98 Unleaded)
- Haltech wide band 02 controller
- Haltech 3 port mini CAN
- Raceworks oil temp sensor
- Raceworks oil pressure sensor
- Raceworks water temp sensor
- Raceworks intake air temp sensor
- Toyota 1ZZ coil on plug set up (eliminates distributor and leads)
INTAKE
- ATS Racing 1260cc fuel injectors
- ATS Racing billet top feed fuel rail
- Walbro in tank fuel pump
- Gen III Toyota CT20B turbo
(Custom built to GTX3071R specs by GCG Turbochargers Sydney)
- Turbosmart IWG75 wastegate actuator
- K&N panel filter in factory air box
- Silicone turbo to intercooler joiner with BOV tee
- Silicone intake pipe work
- Turbosmart plumb back Kompact blow off valve
- Mishimoto 3 Port catch can / breather set up
- Additional custom breather line from cam cover
- Heat shielding under factory water to air intercooler
EXHAUST
- 3" Berk Technology ceramic coated down pipe
- Titanium exhaust heat wrap on down pipe
- 3.00" custom stainless steel mid section
- 2.75" stainless steel Kakimoto R rear section
