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1990–1997 Mazda MX-5 Miata Engine Components FAQ's

Please read our FAQs page to find out more.

What should I address on a high‑mileage NA before adding power?

Timing belt, water pump, front/rear seals, hoses, ignition tune‑up, and a compression/leakdown test. Early ’90–’91 NA6 cars may need attention to crank pulley/keyway health.

Are cams worth it on a 1.6/1.8 NA engine?

Mild street cams paired with intake/header/exhaust and proper tuning can broaden the powerband. Expect driveability gains when the package is matched and timed correctly.

Do I need stronger rods/pistons for moderate boost?

Many modest turbo setups run on stock bottom ends with conservative tuning and good cooling. For higher targets, forged internals and upgraded fasteners add margin.