Toyota Supra RZ (JZA80) Twin-Turbo Street / Drag Car

 MAKE/MODEL:
1993 Toyota Supra RZ (JZA80) Twin-Turbo Street / Drag Car
ENGINE:
Toyota 2JZ-GTE 3-litre twin-cam 24-valve 6-Cylinder

BLOCK INTERNAL SPEC:

• Engine built by HAL (Henderson Automotive Limited) with 20 thous overbore.
• JE forged pistons and ring kit.
• Crower (Carillo) billet-forged rods
• Standard freshened OEM crank and bearings.
• Engine balanced and blueprinted.
• Boostlogic billet-alloy harmonic balancer.
• Main performance components sourced direct via internet from Crower in the USA and Boostlogic, Austin, Texas.

CYLINDER HEAD SPECS:

• Cylinder head ported and polished, approx. 14% flow increase over standard.
• Crower “Beast” Stage 3 cams- specs:
• Inlet: 276 @ 228, exhaust 284 @ 236.
• Crower single valve spring kit with titanium retainers.
• Standard OEM head gasket.
• Venom Racing adjustable cam vernier wheels.

INTAKE SYSTEM:

• STR Fabrication stainless intake pipe from 40cm K&N filter mounted behind right headlight.
• Headlight removed during racing for forced-air effect to filter.
• Trust GReddy polished high-volume intake plenum chamber.
• Infiniti 100mm Q45 throttle body and installation kit.
• TURBO:
• Genuine Trust T88-34D single turbo.
• Boostlogic exhaust manifold, low-mount and match-ported to turbo housing.
• Tial 46mm external wastegate, plumbed to vent via screamer pipe below driver’s footwell.
• Trust Type “R” blow-off valve.
• Trust Drag-spec front-mount intercooler, STR Fabrications hard-pipe kit with Samco hose joints.
• STR Fabrications custom 4”“ downpipe from turbo to Quest-4 hand-made mandrel-bent exhaust system.
• FUEL SYSTEM:
• Bosch 040 in-tank pump drawing to feed Quest-4 custom stainless surge tank mounted in the bootwell.
• SX1000 pump draws from surge-tank via SX in-line filter.
• Quest-4 custom fuel cooling tank running ice around supply and return lines.
• Braided lines throughout.
• SX fuel-pressure regulator.
• Fuel system 12-volted throughout.
• 1000cc top-feed injectors.
• HKS alloy fuel rail.
• Runs on 98 octane for street, standard pump race-grade AvGas for track, C16 fuel for high-performance runs.
• NOS twin-nozzle fogger system with 25lb bottle, solenoid-activated to 14-15lb boost to spool up turbo while sitting on transbrake.

IGNITION SYSTEM:

• Bosch individual coil packs mounted inside cabin.
• High-performance leads to plugs.
• Kenny Bell ignition amplifier.
• EXHAUST SYSTEM:
• Quest-4 hand-made mandrel-bent 3 1/2” exhaust in stainless throughout, no restrictor, one bullet-style muffler plus Q4 hand-made stainless big-bore muffler with 4” tip. Removable from end of 4” downpipe for outlaw drag racing.
• COOLING:
• Standard OEM radiator.
• Yoda-built twin electric fans, independently switched, can use either one always on, one switched to run thermostatically, one to run A/C only, both on, or one on when engine turned off to fast cool-down.
• No oil cooler used.
• Factory fans removed.

ENGINE MANAGEMENT:

• Link G2 Engine management computer.
• Car re-loomed with Link loom throughout.
• 7.0-bar MAP sensor reconfigured from 3.0-bar.  

  

ELECTRONIC / MECH CONTROLLERS:

• GReddy Profec-B boost controller, set to 1.9 bar boost.
• HKS turbo-timer.
• Custom line-lock kit to help start-line burnouts, locks off rear wheels only.
• Factory speed-cut and boost-cut control removed.

ENGINE BAY:

• All emission-control and unnecessary loom wiring removed.
• OTHER:
• Battery box re-located to left rear seat-well inside car, heavy-duty cabling and earthing.
• I use Mobil-1 full synthetic oils, changed every 3 race meetings.
• Penrite ATF high-temperature fluids.
• GEARBOX:
• Originally a factory automatic.
• Full drag-spec TH400 GM manual-shift automatic built by the Gearbox Factory. Complete drag-spec hardened internals and clutch packs.
• Manually shifted 3-speed reverse-pattern, lock-out on neutral to reverse.
• SuperCar Tuning centre torque-converter set-up by Boostlogic, 3000rpm stall.
• Manual trans-brake valve body, button on shifter console.
• Boostlogic TH400 adaption kit to suit 2JZ-GTE.
• High-volume oil pan.
• Remote front-mounted transmission cooler.
• B&M QuickShifter ratchet-action pull shifter.
• STR Fabrications hand-made flex-plate shield.

FLYWHEEL / CLUTCH:

• Lightened flywheel by Precision Engineering.
• DIFFERENTIAL:
• Supra 3.7 ratio diff casing and crownwheel.
• Cusco 1.5-way LSD centre.
• OTHER:
• Driveshaft built and balanced by Whibus Engineering.
• Double driveshaft loops.
• Factory OEM half-shafts.

SHOCKS:

• Originally equipped with factory Bilstein suspension.
• Pedders Suspension-built custom front and rear shocks.
• Specification of front and rear on a need-to-know basis!
• SPRINGS:
• Currently OEM.
• OTHERS:
• Hard-blocked diff housing by Quest-4.
• BRAKES:
• Front - Standard Supra 16” alloy rotors and callipers.
• Rear - Standard OEM Supra
• Brake pad compound by Race Brakes

WHEELS:

• For street: Volk Racing Midnight Blue 18” lightweight alloys.
• For drag: Rears are ex-300ZX lightweight 16”.
• For burnouts: Rears are Ray’s Engineering 17” alloys.
• TYRES:
• For street: Rears are GoodYear Eagle F1 265/35/18.
• Fronts are Fulda Carat Extremo 225/40/18.
• For drags: Rears are Mickey Thompson ET Streets (11.5" wide x 26" high).

BODYKIT:

• VeilSide (copy) front spoiler kit with mesh grille insert.
• VeilSide (genuine) side-skirts, both fitted by Quentin at Woodger Panel and Paint. Side-skirts repaired by Rhys @ Fryline.
• TRD rear wheelarch skirts.
• Rear spoiler removed to assist in reducing drag.
• Rear spoiler for street is Veilside C1 kit.
• Bonnet raised on hinges to help increase engine bay air through-flow.

PANEL AND PAINT:

• Largely stock original Toyota white. Some paint repairs etc but no custom paint job planned.
• GRAPHICS:
• Assorted sponsorship graphics on car.
• Windows tinted.
• No extra lights.

SEATS:

• Racetech 4000W lightweight race seats fitted in blue with grey suede bolsters.
• Adjustable frames made by Quest-4.
• Seat height lowered approx. 2 inches from OEM.
• Rear seat removed altogether.
• STEERING WHEEL & GEAR KNOB:
• Factory Supra OEM steering wheel.

GAUGES / METERS:

• Currently using factory tacho to 8000rpm limit.
• Centre-console mounted:
• GReddy boost gauge with memory and re-set functions.
• GReddy exhaust temperature gauge.
• Factory speedo installed, off the clock on the drag strip!
• ELECTRONIC DEVICES / CONTROLLERS:
• Trust Profec-B boost controller.
• Trust Profec-B remote boost controller switch mounted on steering wheel, to shift boost from high to low under traction loss.
• HKS turbo-timer.
• Line-lock button mounted on shifter lever.
• Electronic speedometer adaptor and control unit.

OTHER:

• STR Fabrications hand-made full chrome-moly rollcage built to 8.99-ET NZDRA specs.
• All interior carpet, trims and underseal removed.
• Door trims, handles etc and electric windows still in-place and operational.
• Dashboard left-side glovebox and compartments removed.
• All fan units and plumbing removed with exception of demister.

ICE / AUDIO:

• 800hp of Supra scream upfront, external wastegate venting by feet.
• DYNO POWER:
• T66 Hybrid - 485 rwkW at the rear wheels, Torque Performance, February 2004.
• T88-34D - 530.2 rwkw, Torque Performance March 2nd 2006.
• Boosting at 1.9 bar to 8000rpm.
• All dynotuning performed by Robin Van Velden at Torque Performance.  

 

0 - 400m:

Champion Dragway, Meremere, 25th March 2006

1/4 mile ET - 9.598 @ 225.84kph (140.33mph)

1/8th mile - 6.226 @ 184.03kph (114.35mph)

1.558 second 60ft time.  

OTHER:

Car has been in the build since sourcing it from Japan in 2000. Originally I used it as a daily driver, although it is still fully street-legal I tend to only drive it now during the weekend or to race events. It is not a trailer-queen! I drive down to the NSDW events at Champion, put my drag tyres on, go racing, pull the tyres off, and drive back home again.

Car is fully NZDRA tech-inspected to run to an 8.99-second ET. Mandatory full cage, external electrical circuit on-off switch, flex-plate protection, fuel cell blanking, driveshaft hoops, battery security, full two-layer suit, boots, gloves and helmet headsock.

Fully street-legal with Low Volume Modification Certificate issued January 2006.

PERSONAL INFORMATION:

NAME:

• Graeme Macdonald.
• Age - 38.
• Mobile; 027-272-9388, daytime at Croydons 836-8314.
• E-mail graeme@croydons.co.nz

OCCUPATION:

• Dealership Manager / Director, Croydon Wholesalers in Central Park Drive, Henderson.
• CURRENTLY-OWNED CARS:
• Supra.
• 1997 Toyota Aristo V300 Vertex 3.0 Twin-Turbo on Ray’s 18”s.
• 1973 Triumph TR6 Convertible, original NZ-RHD with 150bhp.
• 1961 Plymouth Fury 2-Door Hardtop 318 factory-optioned car

BUILD TIME:

• Bought in August 2000 from auction in Japan. Owned ever since.

THIS CAR’S HISTORY:

• It must have been a fairly quick car in Japan, although most of the mods appeared to have been removed prior to auction. When we bought it, it still had the Trust drag-spec FMIC, a Blitz ECU with aggressive ignition curve, big-bore exhaust (totally trashed!), damaged Rays Engineering 17” alloys, and boost gauges etc.

OTHER INTERESTS:

• Anything to do with cars, really- I like (and will own again!) classic American iron from 1958-1961, especially ’59 Chevs, ’58, ’60 and ’61 Plymouths, ’59 Caddies…
• Early Japanese performance cars- would like to own a mint RX3 Coupe, a 240 or 260Z, an early Skyline / 240K, or early Cosmo from the 60’s.
• Import drag racing, big-rig drag racing (in the States!), rally, JTCC, BTCC etc.
• Really interested in drift racing, maybe something to try next?
• Other than cars….
• Road culture- Route 66- have travelled Route 66 seven times since 1994.
• American pop culture.
• Heavy equipment (I used to be an industrial auctioneer with Turners)
• Stormchasing- annual expeditions to the Plains of the USA to chase supercell storms and (hopefully) tornados, plus baseball-size hail, extreme lightning, straight-line winds etc.
• Photography- keen amateur.
• Model-building- no, really!

PEOPLE TO THANK:

• Joe “Yoda” Kyle, Joe’s Mechanical Services.
• Steve Murch, Motorsport Engineering.
• Adrian and crew, The Gearbox Factory (Henderson)
• Robin Van Velden at Torque Performance.
• Shane Turner, STR Fabrications Henderson
• Henderson Automotive Limited.
• The staff and crew at Croydon Wholesalers