1991 NA Spec Miata
About This Car
1990–1993 Mazda Miata Spec Miata Race Car – Fresh Zero‑Hour Engine, Race‑Winning History, Vintage‑Eligible, Well‑Sorted
This NA‑chassis Spec Miata is a thoroughly developed, professionally maintained, and race‑proven example built for reliability, pace, and low running costs. Early NA cars (1990–1993) enjoy a roughly 200‑lb weight advantage over NB‑generation Spec Miatas, making them more responsive and easier on consumables such as tires, pads, rotors, and hubs. They also qualify for multiple vintage racing classes, expanding the range of events the next owner can enter. The car has been continuously improved, inspected, and raced with care.
Powertrain & Driveline - Zero‑hour 1.6L engine, fully rebuilt top and bottom with Studio Engine Werks (originally a Race Engineering motor) - Dyno‑tuned by Driving Force Motorsports - JO Motorsports 5-speed transmission - ACT heavy‑duty 4‑puck solid‑hub clutch with heavy duty pressure plate - Short‑nose crank bolt replaced/torqued and crankshaft‑failure precautions completed per Miata.net guidance - Magnaflow exhaust - 5X Racing adjustable fuel pressure regulator - Fresh Redline transmission & differential fluids - Fresh engine oil
Chassis, Suspension & Brakes - Upgraded pro‑built race hubs - Bilstein shocks - Offset front upper control arm bushings for maximum legal camber - Stainless braided brake lines - Fresh Motul race brake fluid - ARP extended wheel studs - 4‑wheel race alignment & corner balanced (180‑lb driver)
Safety & Interior - Extremely well‑sorted roll cage, upgraded by Safety Dave - Double NASCAR‑style door bars on both sides - Dual emergency cutoff switches (dash + rear bumper) - Dropped floor pan + notched transmission tunnel to accommodate taller drivers - Auto Meter oil pressure & water temp gauges - Full contanment seat for maximum safety - Driver cooling system - Brand‑new windshield
History, Documentation & Maintenance - Multiple race winner - NASA tech inspected and passed multiple times - Full pre‑purchase inspection performed by ARK Motorsports - Professionally maintained by George @ The Village Blacksmith - NASA & SCCA logbooks included - Legal for NASA, SCCA, WRL, Vintage, Time Trial, Autocross, DE, and more
Items Needed for Wheel‑to‑Wheel Competition (Not Included) - Updated harness - Updated window net - Fire suppression system - Nationals ‑ Penske shocks
Included Spares - 1993 1.6L big‑nose crank engine (ready for rebuild) - Sparco race seat for instructor/passenger - Spare ECU - Brand‑new Hawk DTC‑60 rear pads - Spare front brake caliper - Spare rear brake caliper - Box of miscellaneous parts - And the pièce de résistance: a brand‑new, ultra‑rare NA Miata dipstick with the loop still intact
Additional Notes Extra photos are available upon request. Bill of Sale. Please reach out with questions or to arrange to see it.
Specifications
- Year
- 1991
- Make
- Mazda
- Model
- NA Spec Miata
- Body
- Race Car