Popular Diesel & Petrol Cylinder Head Conversions
Speed & Power Tune ups | Performance Upgrades & Modifications

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“Jeepers ”
A Wrangler that goes!

The Jeep Wrangler is the archetypal compact sports utility vehicle, but in the South African high altitude / high ambient context its overall performance is impaired by two shortcomings – both of which can be addressed by tuning gurus, Steves Auto Clinic…

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The 4.0L Jeep Wrangler models, that share a engine with a few other Jeep’s has been under the development light at SAC.
These vehicles have been popular for conversions over the past few years within the SAC group but given the extremely long gearing the power increase simply wasn’t enough.
Extensive testing has been completed around the Jeep Wrangler. Bigger inlet valves fitted to the cylinder heads and the increased compression ratio and we were happy with the power output…

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SAC engineers gas-flow the engine’s inlet ports, re-profile the camshaft to suit the improved airflow and replace the standard exhaust with a low-pressure free flow system…

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6 Cylinder Land-cruiser engines produce plenty of power & torque.
All the Land-cruiser wagons and pick-ups are heavy and usually full of accessories so the aero dynamics and weight end up consuming the energy that they produce…

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Steve’s Auto Clinic have found the solution for those Toyota Hilux 2,7i drivers desperately searching for V6 levels of performance from the 2700i four-cylinder Hilux.
Traditionally SAC conversions have focused on gasflowing the standard head.
Going the “Big Valve” route has taken the bakkie into a different dimension, providing a genuine 33 percent more power at the wheels than the standard model…

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Steve’s Auto Clinic has breathed its magic on a Mitsubishi Colt Rodeo / Pioneer 2.8 turbodiesel — not to increase performance dramatically, but to make the vehicle more drivable and frugal.
The key to unleashing power from the Colt 2,8 engine lies in the cylinder head, and SAC’s research showed that airflow was being restricted on the inlet side, necessitating some changes to the shape of the inlet ports…

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The performance of the VW Beetle can be described as nothing more than sedate. Powered by the same 2,0-litre eight-valve engine employed in the VW Golf & Jetta, it has to make do with a humble 85kW of power and 170Nm of torque.
Steve’s Auto Clinic recognised that the VW Beetle needs an added bit of get-up-and-go in the performance department in order to match its trendy character…

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Steves Auto Clinic ROX the Citi with their VW Golf.
Volkswagen’s Citi Golf has been one of South Africa’s most popular cars since its humble beginnings back in the late seventies with sales still continuing as strong as ever today some 30 odd years down the road…

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So after reading the SAC ad in our magazine, we decided to take the Colt to Steve’s Auto Clinic to see what sort of improvements they could make.
We were, and still are extremely surprised at what they have achieved.
They took of the head and subsequently also the cam, and sent these two items to SAC Engineering

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