The Will To Endure – S1K Swift Sport
RaceDynamics took part in the 2011 Sepang 1000km Endurance Race with their Suzuki Swift Sport. After more than 8 hours of flat out driving, the durability of their competitor was proven as they made it through the race with their balance between speed and reliability, a fundamental dilemma in racing.
Spinning off from the Merdeka Millennium Endurance Race (MMER), the Sepang 1000km (S1K) had become the empire of aging Honda Civics (EG6, EK9) and Integra DC2, until 2011, where drastic rule changes saw these Honda makes relegated from the start line. With only post-2006 cars eligible, even the rallying Proton Satria will no longer be eligible to compete. It is sad for these Honda cars to be excluded, especially when they are still competitive, constantly causing embarrassment to younger machines on the race track. However, other manufacturers now have a chance to shine.
The budget-conscious requirements of the S1K are aimed at the budget conscious, so with only cars below 1900cc permitted to enter, most participants joined the less-than-1600cc category. RaceDynamics too sent their spunky Swift Sport to enter.
Maximising Stock For Reliability
In their set up, RaceDynamics has opted for the reliability over speed where their engine was left with its original factory specs. This would ensure minimal power plant reliability issues though it disadvantaged the Swift when the race requires a sprint finish.
To keep the engine and car components reliable, RaceDynamics lubricated its engine with Moty’s engine oil that have to last more than 8 hours of intense wear and tear. Gear box lubrication was left to Moty’s gear oil that would complement the LSD installed.
Heat control was provided by a Forged Racing radiator filled with Moty’s M747 racing coolant to keep the engine from burning out. APi Racing’s oil cooler has been added for the same purpose. Working around the engine, RaceDynamics uses a RRP reprogrammed ECU to enhance the fuel efficiency, drawing every horsepower they can from the stock engine. TODA extractors and mid piping have also been used, helping to add horsepower.
Stronger, Faster Transmission
The strength of this Swift Sport is probably its transmission, which has seen much upgrading. Inertial transfer is provided with a lightened RRP flywheel which helps in acceleration and deceleration. Coupled with an Exedy competition clutch, the transfer of power to the gears will be instantaneous without much power loss.
A Cusco 1.5 way LSD has been installed to balance the transfer of power to the front wheels, while traction through corners has been enhanced, helping to shave off critical seconds in lap times. The final drive on the transmission has been replaced with a custom-made straight cut type.
This could make up for the lack in power play where the correct calculation of gear ratios can increase the speed of the car. A reinforced drive shaft leads to the wheels, strengthening it for endurance and reliability.
Safety And Handling
Apart from the compulsory roll cage required by FIA, the Swift Sport has been further strengthened with a front strut bar from RRP and fender bars. Coupled with a complete revamp of the suspension system comprising of Fightex coilover. APi Racing roll-centre adjusters, Cusco anti-roll bars and rear camber shims from Greddy, the suspensions and handling alone should have shaved a good bit of lap-time, especially when the suspension can be tuned to suit the track.
Further aiding handling, RaceDynamics opted for the Project μ braking system. The front wheels have been shod with 6 pot callipers clamping the Project μ rotors with Project μ brake pads. Castrol SRF brake fluid is used to provide the activation of this important function.
Additional cooling ducts have been installed to channel air to cool down the high-performance parts, where temperatures can rise to nearly a thousand degrees, in order to reduce incidents of brake fade. Getting the correct brake combination is essential for such an endurance race. If the need to change brake pads arises, the team will lose valuable time in the paddock, not to mention the race.
Data logging devices by QStarz were used to gather information to help in car setup and driver training. Communication between the team and driver was delivered by UClear Bluetooth communications, critical for team strategy.
While the engine and various moving components have been kept cool, the driver has to be kept cool too. Bearing in mind that the air conditioning has been removed and the driver has to drive completely cocooned in fire-proof material, cabin temperature will be unbearable in a short time, which in this case means about an hour for each driver.
To cool the drivers down, RaceDynamics installed quite a bit of ventilation ducting to draw in source external air for the cabin. Although it does not help too much with driver comfort on a hot day these ducts draw in hot air, it has hopefully reduced stuffiness with some ventilation.
Driven in S1K by Felix Tan, Wayne Teo, Yoon Miang Keng and Niki Tham, although this car did not win top honours, given it’s resources and dedication by team members, it was already an achievement just to be classified as a finisher in such a punishing event for car, driver and crew.
Vehicle : Suzuki Swift Sport
Workshop : SK Garage
Country : Singapore
OE Engine Internals / OE Airbox / RRP Reflashed ECU / Toda Racing Extractor & Mid-pipe / Forged Racing Radiator / APi Racing Oil Cooler / Custom Brake Ducts
Cusco 1.5way LSD / RRP Reinforced Clutch Fork / Reinforced Driveshaft / Exedy Competition Clutch / RRP Lightened Flywheel / Customised Straight Cut Final Drive / Fightex Coilovers / APi Racing Roll-Centre Adjusters / RRP Front Strut Bar / Customised Fender Bars / Cusco Anti-Roll Bars / GReddy Rear Camber Shims / ARP Wheel Studs / Project μ 6-pot Brale Calipers / Project μ Brake Rotors / Project μ Brake Pads / Rota GT3 15″ Rims / Federal Tyres FZ201 195/50 R15
OMP Racing Seat / OMP Steering Wheel / Customised Roll-Cage / QStarz Data Logger / UClear Bluetooth Communications Set / Defi Link Meter Advance ZD Club Sports Package / Longacre Switch Panel / Sabelt Safety Harness
[ Click picture to enlarge ]
Text & Photos By HOTstuff magazine