How is the quality of Yunnei engines?
2 Answers
Yunnei engines are of good quality, with the following characteristics: 1. The structural design is relatively simple; 2. They are also quite energy-efficient. Technical features of Yunnei engines: 1. The engine uses specialized materials and specially processed plastic intake manifolds to replace traditional metal ones; 2. The engine employs advanced processing techniques for fracture-split connecting rods, using specialized equipment to split the processed big end hole of the connecting rod; 3. The engine uses a heat-shrink camshaft, which not only reduces the weight of the camshaft compared to the original but also achieves higher cam profile accuracy and more precise valve timing; 4. The engine throttle adopts an electronic control device, which can uniformly coordinate and reasonably manage the instantaneous demands of various vehicle operating conditions on engine torque and output power.
I've been in the transportation business for over a decade and have used several light trucks equipped with Yunnei engines. To be honest, Yunnei engines are among the more reliable domestic options. The Dewei series D25 I drove lasted 180,000 kilometers without major repairs. The engine has strong low-end torque, making it effortless to haul two to three tons of cargo up hills, and maintenance is affordable—an oil change costs around 200 yuan. However, be careful not to use off-brand diesel. Once, I refueled at a small gas station, which led to clogged fuel injectors and a repair bill of nearly 2,000 yuan. Overall, the performance gap with established brands like Yuchai isn't significant, and the cost-performance ratio is especially suitable for individual operators like us running urban-rural logistics. Also, the aftertreatment system needs regular cleaning—today's China VI engines are much more sensitive than the China IV models.
