1985 Honda Civic Crx – Your Ultimate DIY Guide To Revival

You’ve got a classic on your hands, don’t you? That unmistakable wedge shape, the lightweight agility, the sheer joy of a car built for pure driving. The 1985 Honda Civic CRX isn’t just a car; it’s a statement, a piece of automotive history that still turns heads and delivers smiles. But owning a 38-year-old gem comes with its own set of challenges, from routine maintenance to tackling those nagging common problems. You’re probably looking to keep your CRX running strong, maybe even squeeze a little more performance out of it, or simply ensure it stands the test of time.

At FatBoysOffroad, we get it. We’ve been there, wrench in hand, covered in grease, bringing old iron back to life. This comprehensive guide is your promise: we’re here to help you navigate the ins and outs of owning and caring for your 1985 Honda Civic CRX. We’ll arm you with practical tips, best practices, and actionable advice to maintain, troubleshoot, and even upgrade your beloved classic. Get ready to dive deep into the world of CRX ownership – from basic care to sustainable practices, we’ve got your back.

In this guide, you’ll learn:

Why the 1985 CRX remains a coveted classic.
Essential maintenance steps to keep your vintage Honda reliable.
How to diagnose and fix common issues that plague these older models.
Smart performance upgrades to awaken your CRX’s inner beast.
Tips for sustainable and eco-friendly ownership.

Let’s roll up our sleeves and give that CRX the love it deserves!

The Enduring Appeal of the 1985 Honda Civic CRX

Few cars command such a devoted following as the original CRX. Released as a sportier, two-seater variant of the Civic, the 1985 Honda Civic CRX quickly carved out its niche. Its lightweight design, efficient engines, and nimble handling made it a darling among enthusiasts and a fantastic platform for customization. For many, it represents a simpler era of driving, where mechanical feel trumped digital interfaces.

Why the CRX Still Captivates

The allure isn’t just nostalgia. These cars offer a driving experience that’s hard to find today. They are direct, responsive, and incredibly engaging. For DIY mechanics, the simplicity of the engine bay and mechanical systems makes them a joy to work on, fostering a deep connection between owner and machine. The benefits of owning a 1985 Honda Civic CRX extend beyond just driving; it’s about being part of a community and preserving a piece of automotive history.

Performance and Efficiency: A Timeless Combination

Despite its age, the 1985 CRX, particularly the Si model with its fuel-injected 1.5L engine, offered a remarkable balance of performance and fuel economy. Its low curb weight (around 1,800-2,000 lbs) meant even modest horsepower figures felt spirited. This combination makes it an ideal daily driver for those who appreciate efficiency without sacrificing fun. Modern cars struggle to match the pure, unadulterated feedback you get from the road through a well-maintained CRX.

Essential Maintenance for Your 1985 Honda Civic CRX: A Care Guide

Keeping a vintage car like the 1985 Honda Civic CRX running reliably requires a proactive approach to maintenance. Think of it as preventative medicine for your classic. Regular checks and timely replacements are key to avoiding breakdowns and preserving its value. This is where 1985 Honda Civic CRX best practices truly shine.

Fluid Checks and Changes

Fluids are the lifeblood of your vehicle. Don’t overlook them.

Engine Oil: Change every 3,000-5,000 miles, or every 6 months, using a high-quality conventional or synthetic blend 10W-30 oil. Always replace the oil filter (e.g., Fram PH3593A, Purolator L14476).
Coolant: Flush and replace every 2-3 years. Use a Honda-specific or high-quality universal long-life coolant. Check the level regularly, ensuring it’s between the min/max marks in the reservoir when cold.
Brake Fluid: Bleed and replace every 2 years. DOT 3 or DOT 4 fluid is standard. This prevents moisture buildup, which can cause corrosion and spongy pedal feel.
Transmission Fluid: For manual transmissions, replace every 30,000 miles with Honda MTF or a suitable 10W-30 motor oil. For automatics (if applicable), follow the manufacturer’s recommendations for fluid and filter changes.

Belts, Hoses, and Filters: The Lifelines

These components are crucial for engine function and cooling. Inspect them frequently.

Timing Belt: This is critical. If it snaps, your engine is toast. Replace every 60,000-90,000 miles, along with the water pump and tensioner. This is a job where quality parts (e.g., Gates, Aisin) are paramount.
Accessory Belts: Check the alternator, power steering (if equipped), and A/C belts for cracks, fraying, or excessive slack. Replace as needed.
Hoses: Inspect radiator hoses, heater hoses, and vacuum lines for cracks, bulges, or softness. Old rubber hardens and becomes brittle.
Air Filter: Replace every 12,000-15,000 miles or more often in dusty conditions. A clean air filter improves fuel economy and engine performance.
Fuel Filter: Often overlooked, replace every 30,000 miles to prevent fuel delivery issues.

Brake System Health

Your brakes are your primary safety system. Don’t cut corners here.

Pads and Rotors: Inspect for wear during tire rotations. Replace pads when they’re down to 3mm of material. Check rotors for warping (pulsation) or excessive wear.
Calipers: Ensure they move freely. Sticky calipers can cause uneven pad wear and pulling. Rebuild kits are available if they’re seized.
Brake Lines: Check for rust, leaks, or damage, especially at the connection points. Consider upgrading to stainless steel braided lines for better pedal feel.

Ignition and Electrical Basics

A healthy ignition system ensures smooth running.

Spark Plugs: Replace every 30,000-45,000 miles. Use quality NGK or Denso plugs, gapped correctly.
Spark Plug Wires: Check for cracks or resistance. Replace if old or damaged.
Distributor Cap and Rotor: Inspect for carbon buildup or corrosion. Replace if necessary.
Battery: Test regularly. Clean terminals to prevent corrosion. Ensure proper charging system voltage (around 13.8-14.4V).

Suspension and Steering Inspection

For that legendary CRX handling, these components need to be solid.

Bushings: Inspect control arm, sway bar, and trailing arm bushings for cracks or deterioration. Worn bushings lead to sloppy handling.
Ball Joints and Tie Rods: Check for play. Worn components can cause steering wander and uneven tire wear.
Shocks/Struts: Look for leaks or excessive bounce. Old shocks compromise ride quality and handling.

Common Problems with 1985 Honda Civic CRX and How to Fix Them

Even the most beloved classics have their quirks. Knowing the common problems with 1985 Honda Civic CRX models allows you to proactively address them. Many issues are age-related, but with a little know-how, you can often tackle them yourself.

Rust: The Silent Killer

This is arguably the biggest enemy of any vintage Honda. Moisture, road salt, and time conspire to eat away at the metal.
Common Areas: Rear wheel arches, rocker panels, floorboards, around the windshield, and under the battery tray.
Fix: Small surface rust can be sanded down, treated with rust converter (e.g., Rust-Oleum Rust Reformer), primed, and painted. For larger holes, cutting out the rusted metal and welding in new patch panels is the only permanent solution. Consider undercoating vulnerable areas if you live in a wet climate.

Carburetor Issues (for early models without fuel injection)

If your CRX has a carburetor, it can be a source of frustration.
Symptoms: Rough idle, stalling, poor fuel economy, hesitation, hard starts.
Fix: Often, a simple carburetor cleaning with specialized spray (e.g., Berryman B-12 Chemtool) can help. For persistent issues, a full carburetor rebuild kit (available from parts suppliers like RockAuto or specific Honda forums) might be needed. This involves disassembling, cleaning, and replacing gaskets and jets. Vacuum leaks are also common; inspect all vacuum lines for cracks and replace as needed.

Electrical Gremlins

Aged wiring and connections can lead to intermittent electrical problems.
Symptoms: Flickering lights, non-functional gauges, unreliable starting, power windows not working.
Fix: Start with the basics: check all fuses in the fuse box (under the dash and under the hood). Clean all ground points – corrosion here is a common culprit. Inspect wiring harnesses for brittle insulation or frayed wires, especially where they pass through tight spaces or near heat sources. A multimeter is your best friend for diagnosing these issues.

Suspension Wear and Tear

After decades of bumps and turns, suspension components will wear out.
Symptoms: Excessive body roll, clunking noises over bumps, uneven tire wear, a generally “loose” feeling when driving.
Fix: This is where inspecting those bushings, ball joints, and shocks becomes critical. Replacing worn control arm bushings (e.g., Energy Suspension polyurethane bushings) can dramatically tighten up handling. New shocks/struts (e.g., KYB, Tokico) will restore ride comfort and control. For a comprehensive refresh, consider replacing all worn components simultaneously.

Oil Leaks

Small oil leaks are common on older engines, but they need attention.
Common Areas: Valve cover gasket, oil pan gasket, distributor O-ring, camshaft seals.
Fix: Start with the easiest and most common culprits. The valve cover gasket (e.g., Fel-Pro VS50047R) is often a straightforward replacement. The distributor O-ring is another frequent leak point and is simple to swap out. For oil pan gaskets, ensure the pan bolts are torqued correctly before assuming a full replacement is needed. Always clean the area thoroughly after fixing a leak to ensure it’s resolved.

Unlocking Performance: 1985 Honda Civic CRX Tips for Upgrades

The 1985 Honda Civic CRX is a legendary platform for performance modifications. Its lightweight chassis and eager engines respond incredibly well to upgrades, allowing you to tailor it to your driving style. Whether you’re chasing more horsepower or sharper handling, there are plenty of avenues to explore.

Engine Swaps: The B-Series Dream

For serious power, an engine swap is the ultimate upgrade.
The Go-To: The Honda B-series engine (e.g., B16A, B18C) is the most popular choice. These DOHC VTEC engines offer significantly more power and a higher redline.
Considerations: This is not a beginner DIY project. It involves custom engine mounts, wiring harness modifications, upgraded fuel systems, and often new axles and transmission. Professional help is often recommended unless you have extensive experience. Research specific swap kits and wiring solutions from reputable sources.

Suspension Enhancements

Improve handling and cornering prowess.

Coilover Systems: Replace stock springs and shocks with adjustable coilovers (e.g., Tein, Koni, Skunk2). These allow for ride height and damping adjustments, transforming handling.
Sway Bars: Upgrading to stiffer front and rear sway bars reduces body roll and improves turn-in.
Polyurethane Bushings: Replacing all rubber bushings with polyurethane versions (e.g., Energy Suspension master kit) tightens up the entire chassis, providing a more direct feel.
Strut Tower Braces: Front and rear strut tower braces reduce chassis flex, particularly during hard cornering.

Braking System Improvements

More power means you need more stopping power.

Bigger Rotors and Calipers: Many enthusiasts adapt larger brake components from newer Honda models (e.g., Integra, Civic Si) to the CRX. This often requires custom brackets.
Performance Pads and Rotors: Even with stock calipers, upgrading to performance brake pads (e.g., Hawk HPS, EBC Greenstuff) and slotted/drilled rotors can significantly improve stopping power and fade resistance.
Stainless Steel Lines: Stainless steel braided brake lines reduce expansion under pressure, leading to a firmer, more consistent pedal feel.

Intake and Exhaust Mods

These are often the first performance upgrades for good reason.

Cold Air Intake (CAI): A CAI system (e.g., AEM, Injen) relocates the air filter to a cooler area, providing denser air to the engine for a small power bump and improved throttle response.
Header: Replacing the restrictive stock exhaust manifold with a performance header (e.g., DC Sports, Skunk2) improves exhaust gas flow.
Cat-Back Exhaust: A less restrictive cat-back exhaust system (e.g., Magnaflow, Tanabe) reduces backpressure, allowing the engine to breathe better and giving it a sportier sound.

Wheel and Tire Choices

The right wheels and tires can make a huge difference.

Lightweight Wheels: Reducing unsprung weight (wheels and tires) significantly improves acceleration, braking, and handling. Look for lightweight aftermarket wheels (e.g., Enkei RPF1, Kosei K1).
Performance Tires: Invest in high-performance summer tires for improved grip and handling. Ensure proper sizing for your CRX to avoid rubbing or affecting speedometer accuracy.

Sustainable Ownership: An Eco-Friendly 1985 Honda Civic CRX Guide

Owning a classic car doesn’t have to be at odds with environmental consciousness. In fact, keeping an older car on the road is often more sustainable than buying new. By adopting an eco-friendly 1985 Honda Civic CRX approach, you can minimize your environmental footprint while enjoying your ride.

Fuel Efficiency Optimization

Every little bit helps the planet and your wallet.

Regular Tune-Ups: A well-maintained engine runs more efficiently. Ensure your spark plugs, air filter, and fuel system are in top shape.
Tire Pressure: Properly inflated tires reduce rolling resistance and improve fuel economy. Check your tire pressure weekly.
Driving Habits: Smooth acceleration, anticipating stops, and avoiding excessive idling all contribute to better mileage.
Weight Reduction: The CRX is already light, but removing unnecessary items from the trunk or interior can offer marginal gains.

Responsible Parts Sourcing

Reduce waste by making smart choices when buying parts.

Used Parts: For non-wear items, scour junkyards, online forums, and specialized classic Honda parts suppliers. Reusing perfectly good components saves resources.
Remanufactured Parts: For components like alternators, starters, or brake calipers, opting for remanufactured units (which use rebuilt core components) is an excellent eco-conscious choice.
Local Suppliers: Support local businesses and reduce shipping emissions by sourcing parts from nearby shops when possible.

Waste Reduction in DIY

Your garage can be greener.

Fluid Disposal: Never pour used engine oil, coolant, or brake fluid down the drain. Collect them in sealed containers and take them to an authorized recycling center or auto parts store that accepts used fluids.
Old Parts Recycling: Many metal components (rotors, calipers, engine blocks) can be recycled as scrap metal. Check with local recycling facilities.
Reusable Rags: Instead of disposable paper towels, use washable shop rags for cleaning up spills.

Long-Term Preservation

Extending your CRX’s life is inherently sustainable.

Rust Prevention: As mentioned earlier, proactive rust treatment and prevention are crucial. A car that doesn’t rust away lasts longer.
Proper Storage: If storing your CRX for an extended period, ensure it’s in a dry, climate-controlled environment. Use a car cover, fuel stabilizer, and consider removing the battery.

Frequently Asked Questions About the 1985 Honda Civic CRX

Is the 1985 Honda Civic CRX a good first project car?

Absolutely! Its mechanical simplicity, readily available information (like this guide!), and supportive community make it an excellent choice for a first-time DIY project car. Parts can be a bit challenging to find for some specific trim pieces, but the core mechanicals are generally robust and straightforward to work on.

What are the best performance upgrades for a stock CRX?

For a stock CRX, start with suspension and braking. Upgrading to a good set of performance shocks/struts, stiffer springs, and polyurethane bushings will transform handling without breaking the bank. Aftermarket wheels with performance tires are also a significant upgrade. For engine power, a cold air intake and a cat-back exhaust are great starting points before considering more intensive engine work.

Where can I find parts for my classic 1985 CRX?

Finding parts requires a multi-pronged approach. Major online retailers like RockAuto still carry many common wear items. For more specialized or OEM parts, check Honda-specific forums (e.g., Redpepperracing.com), eBay, local junkyards, and dedicated classic Honda parts suppliers. Don’t underestimate the power of social media groups dedicated to the first-generation CRX!

How fuel-efficient is a 1985 CRX?

Very! Even by today’s standards, the 1985 CRX was known for its excellent fuel economy. The base 1.3L model (CRX HF) could achieve well over 50 MPG on the highway, while the 1.5L Si models still delivered impressive numbers, typically in the high 20s to low 30s combined. Your actual mileage will depend on engine condition, maintenance, and driving habits.

What should I look for when buying a 1985 Honda Civic CRX?

Rust is your number one enemy. Inspect the rocker panels, rear wheel arches, floorboards, and around the windshield and sunroof for any signs of corrosion. Check for consistent panel gaps and signs of accident repair. Test drive the car to check for unusual noises, sloppy steering, or a rough-running engine. A detailed service history is a huge plus. Be prepared for some deferred maintenance on any car this old.

There you have it, fellow gearheads. Owning a 1985 Honda Civic CRX is more than just driving; it’s an experience, a commitment, and a journey into automotive history. With the right care, attention, and a bit of elbow grease, your classic CRX can continue to provide decades of driving pleasure. Remember, safety first, always use the right tools for the job, and don’t be afraid to ask for help when a task exceeds your comfort level – a licensed professional is always there for a reason.

Embrace the DIY spirit, enjoy the process, and cherish every moment behind the wheel of your iconic Honda. Happy wrenching!

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Thomas Corle

Founder & Automobile expert at FatBoysOffroad

Automobile expert and off-road enthusiast, sharing in-depth knowledge of vehicles, gear, and adventures. Helping readers make smart decisions and enjoy the thrill of off-roading safely and confidently.