Building a Datsun 240Z Restomod: OEM+ vs Full Custom

TL;DR

• OEM+ Approach: Enhances performance and reliability without altering the 240Z’s iconic lines. Perfect for period-correct restorations and subtle upgrades.

• Full Custom Builds: Radical performance, suspension, and styling upgrades transform the classic Z into a modern track-ready machine.

• Choosing Your Path: Balancing authenticity and innovation is key. Both approaches honor the Z’s legacy while reflecting personal taste and driving goals.
  
  

Understanding the Restomod Concept

A restomod blends the best of two worlds: preserving the original character of a classic car while adding modern performance and comfort upgrades. For the Datsun 240Z, restomodding has become a global obsession — whether it’s upgrading the engine for reliability, swapping in modern brakes and suspension, or reinterpreting styling cues for a more aggressive stance.

Restomod culture allows builders to enjoy the car every day. You get the classic analog driving feel, triple carbs singing at high RPMs, and the unmistakable Z silhouette — but with modern safety, handling, and comfort. This approach is a nod to heritage while letting creativity flourish.

For inspiration, check out the custom 1970 240Z L28 + Mikuni build guide, which demonstrates a careful balance between vintage aesthetics and modern mechanical upgrades.

OEM+: Subtle Enhancements for Period-Correct Purists

The OEM+ philosophy is all about respecting the original design while improving drivability and reliability. Builders might:

• Keep the original bodywork and panels intact

• Upgrade the L24/L28 engine internally for smoother performance

• Add subtle suspension improvements like TechnoToy Tuning components

• Install period-correct aftermarket wheels (like Z Forged or SSR replicas)

This approach appeals to enthusiasts who want a classic Z that looks stock but drives like new. For example, restored 1970 240Z builds showcase meticulous attention to factory detail while quietly upgrading mechanical systems for modern reliability.

The OEM+ route preserves the Z’s timeless aesthetic, allowing owners to turn heads at car shows without shouting “modded.” It’s understated but immensely satisfying for purists.

Full Custom: Radical Creativity Meets Performance

On the flip side, a full custom 240Z lets builders throw caution to the wind. Think:

• Stroked L28 engines with triple Mikuni carbs or fuel injection conversions

• BC Racing coilovers, Wilwood big brakes, and upgraded R200 differentials

• Widebody fender flares and custom spoilers for an aggressive stance

• Interior overhauls with Recaro seats, Speedhut gauges, and modern audio

Full custom builds often blur the line between classic restomod and modern track car, making the Z a machine capable of holding its own at events like track days or spirited mountain drives. Chris & Royce Raquel’s 240Z build is a perfect example of blending heritage with radical performance, turning a Series 1 classic into a driver-focused masterpiece (see full build).

Performance Considerations

Whether you go OEM+ or full custom, certain upgrades are non-negotiable for modern drivability:

• Suspension: Coilovers like BC Racing provide adjustable damping for track or street conditions

• Brakes: Big brake kits, like those from TechnoToy Tuning, ensure safety under high performance

• Cooling: Upgraded radiators with SPAL fans prevent overheating under spirited driving

• Drivetrain: R200 or R180 differentials with limited-slip setups enhance cornering and reliability

For a detailed exploration of performance-focused upgrades, see best engine upgrades for a Datsun 240Z L28 Mikuni setup.

Styling: Respect vs Reinvention

A key decision is how much to alter the original silhouette:

• OEM+ projects typically keep the clean fastback lines, slim bumpers, and subtle spoilers

• Full customs might add Speedforme USA fender flares, carbon fibre front air dams, and ducktail spoilers for an aggressive stance

Even within full custom builds, there’s a balance between period-correct homage and modern interpretation. The goal is a Z that’s instantly recognisable but reflects the builder’s personal vision.

Daily Driving vs Showpiece

One of the most important decisions is the intended use:

• OEM+ builds excel as weekend cruisers and show cars — they maintain comfort, reliability, and stock charm

• Full custom builds are meant to be experienced — track days, spirited drives, and mechanical engagement are the priority

Regardless of the path, both approaches celebrate the Z’s legacy, connecting modern enthusiasts to the history and soul of the original design.

Inspiration From the Z Community

Builders continue to inspire each other worldwide:

• 1972 Datsun 240Z Roy Rolon

• Restored 1970 240Z L28 Mikuni setup

• 1973 Datsun 240Z Dylan Brinkworth

These projects show that whether you lean OEM+ or full custom, the Z is a canvas for creativity, precision, and personal expression.

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