Austin Healey Revotec Fan Kits

If your Austin Healey behaves on the open road but starts getting warm in traffic, low-speed airflow is one of the first places to look. A Revotec electric fan kit gives the radiator controlled airflow when road speed is doing very little, which is usually when the temperature gauge starts acting like it has a personal grievance.

Choose carefully by model, radiator layout and electrical polarity. The Big Healey, Sprite and MG Midget applications are not all the same, and many cars have been converted from positive earth to negative earth over the years. Check the car’s polarity before ordering. Guessing is not a method. It is how weekends disappear.

• Useful in traffic: helps radiator airflow when the car is stationary or moving slowly.
• Model-specific applications: kits are listed for Big Healey BN1-BN2, BN4-BJ8, and Sprite/MG Midget vertical-flow and cross-flow layouts.
• Positive and negative earth options: choose the kit that matches the car’s current electrical setup.
• Complete fitting kits: supplied with fan, Revotec controller, brackets, wiring, fuse kit, fittings and instructions.
• Best used with a sound cooling system: a fan helps airflow, but it will not rescue a blocked radiator, split hose or thermostat that has given up.

Choose the correct Revotec fan kit

Start with the model range, then confirm whether the car is positive earth or negative earth. For Sprite and MG Midget applications, also check whether the car uses a vertical-flow or cross-flow radiator.

Big Healey Revotec fan kits

Austin Healey Sprite & MG Midget Revotec fan kits

The key question is when the temperature rises. If the car is comfortable on the open road but gets hot when stationary or crawling, fan-assisted airflow is a sensible place to start. If it also runs hot at speed, look deeper into radiator efficiency, coolant circulation, thermostat operation, water pump condition and fan belt condition before expecting a fan kit to do all the heavy lifting.

It is still worth checking the basics first. If the radiator is restricted, the coolant is old or unknown, the thermostat is sticking or the hoses are past their best, a fan kit should be part of the overall solution rather than expected to compensate for everything else. Even the best fan cannot outwit a blocked core, which is annoying but very on-brand for cooling systems.

• Good candidate: runs sensibly on the open road but gets hot when stationary or crawling.
• Check first: coolant level, hose condition, radiator cap, thermostat, radiator fins and belt condition.
• Look deeper: if it also runs hot at speed, check radiator efficiency, coolant circulation, thermostat operation, water pump condition and fan belt condition before expecting a fan kit to do all the heavy lifting.

Back to Austin Healey Cooling Advice

Useful cooling checks while you are there

Fitting a fan kit is a good moment to look at the rest of the cooling system. It is much easier to deal with a tired hose, weak cap or blocked radiator before the next hot queue finds it for you.

• Radiator condition: check for damaged fins, past repairs, signs of leaks or poor heat transfer.
• Coolant and antifreeze: drain, flush and refill correctly if the coolant history is unknown.
• Hoses and clips: replace cracked, swollen, soft or unknown-age hoses before they make their own announcement.
• Thermostat and cap: small parts, large capacity for causing unnecessary drama.