Acronyms
List of some of the more common terms used in this wiki FAQ. Additional info from MR2OC, Fixing Cars, GTFour.
- 3SGE
- Name of the Japanese spec naturally aspirated 2ltr engine in the Mk2 MR2. USDM spec engines carried a different designation (5SFE). (Engine Models)
- 3SGTE
- Name of the turbo charged engine on a Mk2 MR2. (Engine Models)
- 4AGZE
- Name of the engine on a MKI supercharged. (Engine Models)
- 4AGE
- Name of the engine in a MKI normally aspirated. (Engine Models)
- AFM
- Air Flow Meter, the flapper-door type sensor used to measure the incoming air to the engine.
- A-pillar
- Pillar that runs between the door and the windscreen.
- ATF
- Automatic Transmission Fluid.
- AW11
- Mk1 MR2 taken from the VIN.
- BGB
- Big Green Book. See Owners Manuals.
- BHP
- (Also HP) Brake Horsepower.
- Boost
- What happens when your supercharger or turbocharger kicks in. Measured in “kilo pascals” (kPa), “Barometric” (Bar), or “Pounds per Square Inch” (PSI). Increased boost pressure gives more power/torque each time a cylinder fires. NA engines run at atmospheric pressure.
- BOV
- Blow Off Valve. Vents excess boost, when not needed by the engine, into the atmosphere for the “Psssshhhhht” sound.
- BPV
- Bypass Valve. Vents excess boost, when not needed by the engine, back into the air intake.
- B-pillar
- Vertical pillar that runs between the back of the door and the small triangle window.
- Cat
- Catalytic Converter. Scubs nasty emissions from the exhaust.
- Cam
- Camshaft. Used to convert rotational motion into linear motion. Usually used in an engine to lift the intake and exhaust valves in the cylinder head.
- C-pillar
- Pillar at extending beyond the rear window next to the engine bay.
- Dizzy
- Distributor. Distributes power to each of the sparkplugs in the appropriate firing order.
- DOHC
- Dual Overhead Cam. Usually has one cam for intake and one cam for exhaust valves.
- EBC
- Electronic Boost Controller.
- ECU
- Electronic Control Unit.
- Frunk
- Front trunk.
- #Grunt BoxGrunt Box
- Modification that provides an increase in torque below 3500rpm on SC cars.
- HG
- Head Gasket. Seals the gap between the cylinder head and the engine block.
- ITB
- Individual Throttle Bodies.
- JDM
- Japanese Domestic Market. Refers to parts or cars produced and used in Japanese models.
- LSD
- Limited Slip Differential.
- MAP
- Manifold Air Pressure Sensor - used in some Jspec mr2 motors, measures the pressure of air inside the intake manifold, which the ECU can use to calculate how much air is being consumed.
- MBC
- Manual Boost Controller.
- MR2OC
- USA forum for MR2 owners MR2 Owners Club.
- NA
- Normally/Naturally Aspirated (ie, not Supercharged or Turbo).
- OEM
- Original Equipment Manufacturer.
- PCD
- Pitch Circle Diameter. The distance between the centres of the holes the wheel nuts sit in.
- RWHP
- Rear Wheel Horsepower.
- SC
- Supercharged.
- TPS
- Throttle Position Sensor. Excellent write up at Needful Things.
- TRD
- Toyota Racing Development
- TVIS
- Toyota Variable Induction System. A set of butterflies in the intake tract that open at 4400rpm.
- Turbo
- Turbocharger. Produces boost by using host exhaust gas to spin a compressor turbine. Does not take engine power to run it like a Supercharger, but does take time to spin up. The stock turbo in a Mk2 MR2 is a CT26 which was originally used in some of Toyotas small trucks in the late 80’s.
- #Turbo LagTurbo Lag
- The time it takes for a turbocharger to reach operating speed once the throttle is opened.
- USDM
- United States Domestic Market. Refers to parts or cars produced and used in US models.
- VIN
- Vehicle Identification Number
- WOT
- Wide Open Throttle