About 240-SX.com

An independent technical-planning reference for Nissan S-chassis owners, builders and swap planners.

What this site is

240-SX.com is built to help S13, S14 and related S-chassis owners make better planning decisions before buying parts or taking a car apart. The focus is practical: packaging, drivetrain integration, fuel delivery, cooling, wiring, wheel-and-tire fitment, maintenance baselines and the tradeoffs that turn a parts list into a reliable car.

The site is not affiliated with Nissan or any parts manufacturer. Factory specifications, donor-engine details and service procedures can vary by market, year and exact component. Where a choice affects safety, emissions compliance or structural integrity, the project manual, component manufacturer and qualified technician take priority over a web guide.

Editorial approach

Reference

Separate facts from planning assumptions

Factory or manufacturer facts are labeled differently from estimates, community practices and calculator assumptions.

Reference

Explain the dependency

Swap pages emphasize what a choice changes downstream—mounting, oil-pan clearance, driveshaft, wiring, cooling and service access.

Reference

Correct rather than conceal

If a page is incomplete or a technical claim is wrong, the goal is to correct the page and document the change rather than preserve a bad answer.

Who it is for

The material is written for owners who want to understand the system before ordering parts: street builds, track cars, drift cars, restorations and swaps. It is intentionally conservative about claims such as “supports X horsepower” because real limits depend on condition, calibration, fuel, temperature, duty cycle and the exact components used.

Not a factory service manual

Use the correct Nissan or donor-vehicle service information for torque values, wiring pinouts, diagnostic procedures, fluid specifications and safety-critical repair data. This site is a planning and educational reference, not a substitute for the exact manual for your car.