Pressure Points
Pressurization is produced by a pair of HKS GT Series 3037S turbos. The Garrett-based hairdryers sport a .87 A/R on the hot side and a .60 A/R on the compressor side. A 56T-trim compressor wheel is in charge of packing the air, which makes its way to the engine via a front-mount Blitz air-to-air intercooler. An HKS wastegate bleeds off unneeded exhaust gases, while a pair of HKS Super Sequential blow-off valves are on call to relieve boost pressure in the intake tract between shifts.
No Fuelin'
Fuel is a key component in the power-generating process and to this end SP Engineering has installed the hardware and electronics with an eye to supporting four-digit power levels. It all starts with twin Denso high-flow pumps and -6 lines. At the rail flow is controlled by a Sard regulator and directed to the engine's 1000cc injectors. Old standbys, namely the HKS Vein Pressure Converter (VPC) and Graphic Control Computer (GCC), are on duty in accordance with an HKS EVC boost controller and an SP Engineering ROM-tuned stock ECU to oversee fueling strategies and boost.
Power Transference
The application of power is handled by a stock Supra six-speed transmission outfitted with a C's short shifter and HKS triple-place clutch. At the rear, thrust is funneled through a RE Amemiya differential and custom Titanium axles. SP Engineering elected to use a metal driveshaft in lieu of a lightweigh aluminum or carbon fiber unit for durability reasons.
Re: Mamma Meeya
The Supra-7 tallies righteous style points for its immaculately installed RE Amemiya fender flares and front fascia. 20/20 Autobody of City Of Industry handled the grafting and painting chores. Once the RX-7's flowing bodylines were massaged to perfection, five coats of Lamborghini yellow were unleashed on the Mazda. The results speak for themselves.
Suspension Bridge
For suspension, SP has elected to run HKS Drag coilovers specially imported for the project. This suspension set-up hints that the car will be expected to do a lot more than look pretty-quarter-mile blasts are in its future. Racing Beat sway bars and RE Amemiya tie rods and A-arms round out the undercarriage mods. Rolling stock consists of Blitz Technospeed aluminum and Yokohama AVS Sport rubber. Up front, 18x8.5 rims are joined by 235/ZR40-18 tires while the rear is fitted with an 18x10.5 and 285/ZR35-18 combination. Before running out and going this fat on wheels and tires for your RX-7, remember, this baby is flared.
This is just the foundation for insanity. How much power will this thing make? In Part 2 of "Hellbent Hybrid," we will detail the tuning portion of the project and bring you the rest of this epic street car saga.