NB Miata
I purchased a completely stock base model silver 2000 Mazda Miata (NB1) in March of 2021. When I purchased the car I didn’t really have any specific plans, I really just wanted a fun car I could work on and enjoy.
That all changed in September of 2021 when I attended both my first track day and my first autocross event ever. Having no performance driving experience meant I was very slow, but I had a ton of fun, and more importantly knew what I wanted to do with my car.
This page is a build log for my NB Miata.
Current setup
Drivetrain
Engine
- Current
- Rebuilt BP4W block (DIY rebuild, no machine shop)
- Non-OEM cast VVT 10.0:1 pistons
- OEM rings
- Eagle rods
- ARP main studs
- ARP head studs
- ACL race bearings
- Rebuilt BP6D head (rebuilt to OEM specs by a machine shop)
- Original valves (but had a valve job done)
- New springs
- New seals
- Boundary Engineering VVT oil pump (shimmed to 72 psi)
- JPM / Mazdaspeed oil pan baffle plate
- BP6D oil pan with BP6D MBSP
- Fluidamper harmonic balancer
- Flyin’ Miata 36-2 tooth crank trigger wheel
- Audi R8 coil on plugs, wired for sequential spark
- Innovative Engine mounts with 85A poly bushings
- Rebuilt BP4W block (DIY rebuild, no machine shop)
- Previous (now a spare motor)
- Original stock unopened BP4W motor and head
- Volvo B18/B20 valve springs
- Exhintake cam swap
- Boundary Engineering oil pump (no additional shims)
- JPM / Mazdaspeed oil pan baffle plate
- Fluidamper harmonic balancer
- Flyin’ Miata 36-2 tooth crank trigger wheel
- Audi R8 coil on plugs, wired for sequential spark
- Innovative Engine mounts with 85A poly bushings
Intake
- Squaretop intake manifold
- Autoexe ram air intake
- Skunk2 throttle body
Exhaust
- Raceland headers
- Racing Beat race midpipe
- Racing Beat Power Pulse muffler
Fueling
- FlowForce 725cc injectors
- Walbro 190 lph fuel pump
- GM Flex Fuel sensor
Transmission & differential
- NB2 6-speed transmission, previously ran the original stock NB1 5-speed
- Miataroadster tall angled shifter
- Stock 4.3 ratio Torsen Type II differential
- Prothane poly differential mounts
- Supermiata lightweight flywheel
- Supermiata Sport 4 puck clutch
Cooling
- Hawley coolant reroute
- Koyorad radiator
Suspension
- Xida Race coilovers
- Single adjustable
- Stock style NB top hats
- Dual springs
- 800 in-lb front spring rate
- 500 in-lb rear spring rate
- A1 Ground Control Nylatron control arm bushings
- Paco Motorsports rear upper adjustable control arms
- Bauer offset front lower ball joints
- Brofab Toyota rear hubs
- Sway bars
- Racing Beat 54106 1.250×0.188 tubular front sway bar
- Supermiata rear sway bar
- AWR heavy duty reinforced front sway bar brackets
- Flyin’ Miata adjustable sway bar endlinks
- Steering
- Advanced Autosports depowered power steering rack
- Prothane poly steering rack bushings
Brakes
- Supermiata Wilwood Dynalite 11″ front brake kit
- ND Brembo rotors
- GLoc brake pads
- R12 pads for track and autocross
- I have some leftover R10 pads
- GS-1 pads on the street
- V8 Roadsters Wilwood Powerlite rear brake kit
- NB Sport rotors
- GLoc brake pads
- R10 pads for track and autocross
- GS-1 pads on the street
- Parking brake option
- Wilwood brake proportioning valve
- Supermiata Wilwood 1″ master cylinder
- Brake pressure sensor for data logging
Aero
- OEM hardtop
- Nine Lives Racing air dam
- Nine Lives Racing 64″ wing with their mounts
- Nine Lives Racing CFD v2 endplates
- Front splitter
- Loosely based on the Nine Lives Racing splitter
- 1/2″ plywood, rounded front, with a deeper round on the bottom side
- Extends ~3″ from air dam
- Nine Lives Racing Sturdy Boii mounts
- 2×2″ side support
- Wire supports behind air dam
Interior
Electrical
- AMP EFI MS3Pro Evo ECU
- Wired partially into a detachable stock ECU connector
- Wired partially to separate harnesses for additional sensors
- CANchecked mulfi-function gauge in place of oil pressure gauge
- Additional sensors
- AEM Wideband sensor with gauge
- Coolant temperature sensor
- Coolant pressure sensor
- Oil temperature sensor
- Oil pressure sensor
- AIM Solo 2 DL
- AIM SmartyCam 3 Sport
- Garmin Catalyst