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The robustness and technology of the Chevrolet Onix's 3-cylinder engine are surprising, but there are some technical details to be aware of before accelerating

Written by Bruno Castilho
Published 29/10/2024 às 01:27
The robustness and technology of the Chevrolet Onix's 3-cylinder engine are surprising, but there are some technical details to be aware of before accelerating
Chevrolet and the 'novelty' with the 3-cylinder engine of the Onix Turbo (Image: Reproduction)

Imagine an engine that promises to be compact, but powerful enough for you to “mash the accelerator” without mercy! That’s exactly what Chevrolet brings with the 3-cylinder engine of the Onix Turbo. But, in addition to the power, does it also deliver the durability it promises? For those who love an engineering challenge and can’t resist scrutinizing what’s “under the hood”, this is a real treat.

The Chevrolet Onix Turbo's 3-cylinder engine is a modern and economical solution, using direct injection and turbocharger technology to deliver surprising power of up to 116 horsepower. This engine was developed to combine performance and economy, but its compact format brings specific challenges, especially in the cylinder head. One of its particularities is its oil-immersed timing belt, which requires special attention when changing and maintaining it, as the oil must be within specifications to avoid premature wear.

Chevrolet recommends replacing the timing belt every 240.000 km or 15 years – a recommendation that, to many mechanics, sounds risky. Many experts suggest an early exchange to ensure safety, since wear on this belt can affect key parts, such as the cylinder head bearings, which are fragile and, in some cases, need to be replaced rather than repaired.

Cylinder head structure and maintenance challenges of the Chevolet Onix Turbo 3-cylinder engine

One of the highlights and most complex aspects of the Chevrolet Onix Turbo's 3-cylinder engine is the cylinder head. It differs from conventional engines in its height and in the bearing attachment system, which are considered more delicate. The lack of a more robust support structure means that when the belt breaks, the bearings can be damaged, often requiring the use of reinforcement plates or even welding to reposition the parts, which is not a definitive solution.

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The tall cylinder head structure also houses hydraulic tappets which, although efficient, must be constantly monitored, mainly in vehicles with high mileage. For owners who like to customize, like customer Vanderson, the cylinder head and the engine as a whole offer improvement options, such as reinforced sealing and customization of the exhaust system, but this requires extra care with maintenance.

Engine maintenance and service life recommendations

Chevrolet recommends using a specific oil to avoid problems with the timing belt, which is a point of attention. Replacing the belt at a shorter interval than that recommended by the factory, around 100.000 km or five years, can prevent more serious problems in the Onix Turbo's 3-cylinder engine. In addition, preventive maintenance of the cylinder head, including valve seating and replacement of the exhaust valve guides, is essential to ensure that the engine continues to operate efficiently.

The cylinder head grinding process must be carried out by experienced professionals, since the quality of the work directly impacts the engine's compression and, consequently, its durability. Every detail counts: from choosing a good seal to the correct alignment of the internal parts, which prevents failures during ignition.

Does the Chevrolet engine really deliver?

According to specialized mechanics, the Chevrolet Onix's 3-cylinder engine is capable of providing a pleasant driving experience and excellent fuel consumption performance. Customers like Vanderson, who challenge the car in extreme conditions, show that, with proper care, the engine can handle the demands well. However, this performance comes with the warning that inadequate maintenance can compromise the cylinder head and exhaust system more quickly than expected.

The Chevrolet Onix Turbo's 3-cylinder engine is an interesting choice for those looking for economy and power, but it requires special attention in maintenance to ensure its durability.

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Luiz Fernando Ferreira Santos
Luiz Fernando Ferreira Santos
29/10/2024 10:29

How do we earn money in cash working in the company even if this boy is 15 years old?

Thaddeus
Thaddeus
30/10/2024 11:19

Robustness? LOL

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Bruno Castilho

Journalist focusing on oil and gas, investments and opportunities in the national market.

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