Engine · with stillsThe Baffled Rocker Cover
Why boosted MX-5s drown their catch cans, and how we build the cover that stops it.
The Forge Files
Field Notes
Real guides for real problems, from the jobs we actually do.
Engine · with stills
Suspension · with stillsSupermiata Tecnas On An ND
A fast road setup on a Mk4 RF: the spec choice, the install, the bushing reset, ride height and alignment.
Drivetrain · with stillsWhich Diff Have You Got?
Identify your MX-5 diff: read the ratio and the type on the car.
Drivetrain · with stillsRemoving & Fitting A Diff
The full diff swap: out, back in, and the PPF set in spec.
Drivetrain · with stillsAuto To Manual
Converting an automatic Mk2 to three pedals, start to finish.
Engine · with stillsThe Cambelt Job
Changing the cambelt on a 1.8, with the VVT detail and the figures.
Engine · with stillsMX-5 Lifter Tick
What it is, what causes it, and how we clear the hydraulic lifters.
TuningIgnition Timing & The Free-Power Mod
Set the base right, then advance 10 to 14 degrees for free power, safely.
Diagnostics · referenceThe Diagnostic Box, Pin By Pin
Terminal maps for the engine-bay connector, Mk1 to Mk2.5, and what each pin does.
Diagnostics · referenceThe Factory ECU Pinouts
Every factory ECU connector, Mk1 to Mk2.5, drawn to the real plug face with pins, functions and colours.
BrakesThe MX-5 Handbrake
Why it goes useless, and how to set it up in the right order.
SuspensionThe Ball Joint That Works Loose
A safety tip, and the small weld that fixes it for good.