VVT Mega Page VERSION TWO

Greg / February 16, 2023 / VVT Beast V2.0

The List. It’s all here: From detailed motor specs to driveline, management, even gaskets. If you’re interested in the technical build blog for this engine you can check it out here. I’ve also got a video showcasing the highlights of the assembly process here.

Block:

  • Version: BP6D (01-05)
  • Bored to 84mm (1929cc displacement)
  • Crankshaft: Maruha Motors 87mm (+2mmm Stroker)
  • Main Caps: Mazworx Billet
  • Main Bearings: ACL Race (Standard Size)
  • Thrust Bearings: OEM 01-05
  • Main Studs: ARP
  • Sump Baffle: DCBE.TECH
  • Main Bearing Support Plate: MiataRoadster 5-Main Support
  • Oil Pump: Boundary Engineering Stage II (2 Shims)
  • Harmonic Balancer: ATI Super Damper
  • Trigger Wheel: FAB9 Tuning 36-2
  • Connecting Rods: Manley Performance
  • Rod Bearings: King Race (Standard Size)
  • Pistons: Wiseco 84mm (10.5:1 Compression, Final Engine Comp. 12:1)
  • Wrist Pins: Trend Performance 0.185″

Head:

  • Version: BP6D (01-05)
  • Cams: Stock
  • Cam Gears: Stock
  • Lifters: Stock
  • Exhaust Valves: SI Stainless Back-Cut, Standard Size
  • Intake Valves: Supertech Back-Cut, Standard Size
  • Valve Springs: No Name, 90lbs seat pressure
  • Portwork: “Stage 1” Mild Bowl Blending/Casting Cleanup
  • Head Studs: FAB9 Tuning UltraDuty 2800
  • Head Gasket: SCE Vulcan Ring, 84.5mm, 1.4mm Thickness

Intake:

  • Manifold: Skunk 2 Racing
  • Throttle Body: Skunk 2 Racing
  • Intercooler: Fab9 Tuning Stage II (550HP)
  • Intercooler Piping: DIY
  • BOV: Turbosmart Kompact Recirc

Exhaust:

  • Exhaust Manifold: Kraken MX-5 Low-Mount
  • Turbocharger: Borg Warner EFR6758 IWG 0.64 A/R
  • Wastegate Actuator: Turbosmart IWG-75 GenV Dual Port
  • Downpipe: Kraketn MX-5 3.0″ V-Band
  • Exhaust: Kraken MX-5 3.0″

Fuel:

  • Fuel Rail: Radium Engineering
  • FPR: Fuelab 515
  • Fuel Injectors: Injector Dynamics ID1300
  • Fuel Pump: Walbro/TI Automotive 450LPH
  • Deatschwerks HD Fuel Pump Hardwire Kit
  • Fuel Filter: Fuelab 818 In Line Fuel Filter

Management:

  • ECU: MSPnPPro 90-93
  • Boost Control: MAC 4-port EBC Solenoid Controlled by MS
  • Ignition: Advanced Engine Dynamic COP Kit
  • NA8 Alternator (Internally Regulated)

Drivetrain:

  • Clutch: ACT Xtreme Pressure Plate & Sprung 6-Puck Disc (BMW E46 Non-M)
  • Flywheel: KMiata
  • Transmission: BMW ZF 5-Speed (From an E36/7 Z3)
  • Trans Notes: KMiata ZF Swap Kit
  • Driveshaft: Custom from KMiata
  • Diff Swap Kit: V8 Roadsters Getrag
  • Diff: Getrag/GM G80 LSD
  • Gearing: 3.23:1
  • Axles: Driveshaft Shop Stage 1 (Included with V8R Kit)

Maintenance:

  • Gaskets/Etc: Mazda
  • Timing Belt: Gates Racing Blue (RPM)
  • Water Pump: Gates w/ Cast Impeller

Tolerances:

  • Rod Bearings: 0.0020” – 0.0023”
  • Main Bearings: 0.0020 – 0.0023”
  • Thrust Bearings: 0.006” – 0.009”
  • Piston-To-Wall: 0.0035”
  • Top Ring: 0.017”
  • 2nd Ring: 0.019”
  • Intake Valve Lash: 0.008” – 0.009”
  • Exhaust Valve Lash: 0.012” – 0.013”

Machine Work:

  • Clean/Buff/Magnaflux Block
  • Surface Deck (As Little As Possible, about 0.004” removed)
  • Bored to 84mm
  • Line Hone Mains
  • Balance Complete Rotating Assy Including Clutch/Pressure Plate
  • Polish Crankshaft
  • Valve Job + Shaved Head (0.045” removed)
  • “Stage 1 Porting”: Bowl Blend, Short Turn Radius, Blend to Valve Job
  • Piston Valve Reliefs had to be opened up in order to clear valves at full VVT advance

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