Drift Power Steering Overheating: Cooler Placement, Fluid and Why Assist Fades

Power steering problems in a drift car rarely show up when the car is idling in the shop. They show up after repeated transitions, long periods at high engine speed and constant steering corrections when the driver needs consistent assist the most.

If the steering gets heavier as a session goes on, fluid heat, aeration, pump speed, contamination and system layout all deserve attention before the pump is automatically blamed.

Featured photograph: Formula Drift competition at Evergreen Speedway in Monroe, Washington, August 2008. Representative drifting image used for this power-steering article, not a 2026 Race Club event. Photo by kanattie / Wikimedia Commons, licensed CC BY-SA 2.0.

Heat can change the steering before anything actually breaks

KRC Power Steering's aluminum-pump instructions specifically warn that assist fading as a race continues can be an overheating problem. In that document, KRC tells users to check fluid temperature immediately after the race and says fluid in that application should not exceed 250 degrees Fahrenheit. That is KRC guidance for its system, not a universal limit for every pump or fluid.

The useful lesson is broader: power steering is a hydraulic system doing work, and that work creates heat. A drift car can place heavy demand on it because steering input is frequent, rapid and often happening while the engine is near the upper end of its operating range.

Pump speed matters as much as the cooler

Adding a cooler can help a system that is genuinely carrying too much heat, but it does not correct every cause. KRC also points to excessive pump RPM as a possible source of high fluid temperature. Pulley ratio therefore matters. A pump that is being oversped can create heat and aeration even if the cooler is large.

Before changing hardware, identify the pump model, pulley sizes, engine speed range and steering gear or rack requirements. Follow the pump manufacturer's operating guidance rather than assuming that more flow always means better steering.

Keep heat out before trying to remove it later

KRC's installation guidance tells racers to route hoses away from headers so outside heat is not added to the fluid. That is simple but important. A return hose running beside a header can turn the exhaust into another heat exchanger feeding the wrong direction.

Reservoir placement also matters. The feed side of the pump needs a clean supply of fluid without introducing air. Avoid routing that creates unnecessary restrictions, sharp bends or places the reservoir where heat soak is severe. Use the hose sizes, fittings and reservoir layout recommended for the actual pump and steering system.

Put filters and coolers where the manufacturer expects them

KRC recommends filters and coolers on the return side when they are needed. That keeps added restriction away from the pump inlet. Howe Performance likewise sells inline coolers as part of its race-steering systems and publishes system-specific hose and fluid requirements.

Do not treat that as permission to place any cooler anywhere. A cooler that is too restrictive, mounted where it has no airflow or plumbed with undersized fittings can create another problem. Build the cooler into the hydraulic system rather than hanging it on as an afterthought.

Contamination can look like a heat problem

KRC also identifies contamination from newly fabricated hoses and other steering components as a common pump-killing problem. That is why new hoses should be cleaned correctly before assembly and open components should be capped during fabrication.

Foamed fluid, metallic debris, darkened fluid or repeated seal issues are reasons to stop and inspect the system instead of simply adding another cooler. If a pump has already failed, circulating its debris through a replacement pump can turn one failure into a cycle.

Bleed the system before judging it

Howe's published bleeding procedure emphasizes removing air before normal operation. Aeration changes steering feel and can contribute to noise, inconsistent assist and heat. After plumbing changes, pump replacement or reservoir work, use the bleeding process specified for the components in the car.

A reliable drift steering system is not just a big cooler. It is the correct pump speed, clean fluid, proper hose routing, controlled heat and a system that stays free of air.

Need help sorting a drift-car steering system, cooler or engine-bay package? Send Race Club the chassis, pump, rack and current symptoms. More technical drift coverage is in the Drifting journal.

Technical references

KRC Power Steering aluminum pump instructions
Howe Performance power-steering bleeding instructions

Sources checked September 22, 2026. Manufacturer temperature, fluid, hose and pump guidance applies to the identified systems. Verify the requirements of the exact pump, rack, fluid and cooler used in the vehicle. Motorsports/off-highway use.