Established in 1963, Micro Motor Engineering is one of South Africa's leading engine remanufacturers, producing over 2000 engines per year. With RMI Accreditation and over 50 years of service excellence, we've built an impressive reputation for reliability, quality and integrity.
Our dedicated factory in Johannesburg is equipped with the most advanced machining, tooling and gauging equipment available. We remanufacture engines and major engine components for OE vehicle manufacturers and major fleet users.
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Crankshafts and Camshafts are inspected by our highly skilled, detail-driven team with the using advanced precision equipment. Every dimension is carefully measured and compared with the original manufacture specifications, ensuring a reliable, and safe component.
Crankshafts are tested for cracks and flaws using non-destructive testing, magnetic fluorescent particles are used to highlight cracks under ultra-violet light allowing the crankshaft to be inspected without causing damage to the crankshaft, ensuring the crankshaft is safe to use.
Over time a crankshaft can develop wear or go out-of-round. Our expert crankshaft grinders, using precision crankshaft grinding machines, restore worn and damaged crankshafts by carefully grinding the journals to a smaller size specified by the original manufacturer. Ensuring the crankshaft meets exact tolerances for reliable service.
To minimise the friction between crankshafts and their bearings, and camshafts and their moving parts that work on them, all crankshafts and camshafts are polished to achieve a smooth mirror-like finish. This removes microscopic roughness or high spots, ensuring optimal, reliable performance.
Pressure testing is a non-destructive inspection method used to detect hidden cracks or leaks in a cylinder head that could allow engine coolant to leak or combustion gasses to escape. The cylinder head is heated with water, either in a purpose-built hot water bath or by circulating hot water through its internal passages, while the water system is pressurised.
Valves and valve seats are critical engine components that ensure proper combustion. Over time, they can wear and lose their ability to seal effectively. To restore peak performance. valve seats are cut using precision valve seat cutting machines, while valves are refaced with a valve grinding machine. This process guarantees a dependable seal between valve and valve seat.
A smooth finish of the cylinder head mating surface is essential for achieving optimal seal between cylinder head and cylinder block. Over time cylinder heads can warp or wear, compromising this seal. Using our state-of-the-art surfacing machines, we refinish this mating surface to restore flatness and precision, ensuring optimal engine performance.
The cylinder block is the backbone of the engine, and endures extreme stress and heat during operation. Our highly skilled team, using advanced precision equipment, carefully measure and record all critical dimensions, comparing them against original manufacture specifications.
We accurately re-sleeve both basic straight bores and advanced wet cylinder bores that incorporate upper and lower seal areas. Worn or damaged bores are precisely cut out using our state-of-the-art machines and replaced with a high-quality, replacement metal sleeve. The Sleeve is then machined back to the original manufacturer's specifications, restoring the cylinder block to optimal condition and allowing the engine to perform as new without the need for full block replacement.
The crankcase refers to the main bearing housing, where the crankshaft is installed within the cylinder block. When the main bearing housing becomes worn or damaged, our team uses engine-specific milling machines restore alignment, roundness, and correct sizing. This precision process ensures the crankcase conforms to manufacturer's specifications, allowing reliable operation.
A smooth finish of the cylinder block mating surface is essential for achieving optimal seal between cylinder head and cylinder block. Over time cylinder blocks can warp or wear, compromising this seal. Using our state-of-the-art milling machines, we refinish this mating surface to restore flatness and precision, ensuring optimal engine performance.
The big end of a connecting rod the section that connects directly to the crankshaft. Over time, wear and damage can cause the big end bore to lose its roundness and proper size. Using connecting rod specific machines, our team restore roundness, correct dimensions, and alignment across the full set of rods, ensuring optimal engine performance.
The small end of a connecting rod connects the rod to piston via a bushing. Over time, this bushing can wear, resulting in a poor fit. Our team removes the worn bush, installs a new one, and machines it to the correct size in accordance with strict original manufactures specifications. The new bush provides a durable, low-friction surface, for reliable performance and long service life.
At Micro Motor Engineering, we disassemble, inspect, machine, and assemble complete engines with precision and care. We boast a dedicated striping bay for engine disassemble and a dedicated assembly bay for engine reassembly. Using precision equipment, all critical dimensions are re-checked and compared to original manufacturing specifications, and recorded ensuring reliability and performance.
Dyno testing or dynamometer testing is the process of benchmarking a fully assembled engine in a controlled environment to measure its power output, torque, and overall performance. This test simulates real-world operating conditions while allowing technicians to monitor the engine closely, guaranteeing reliability and constant performance.
