Honestly, there’s a wide range of quality of stuff produced in China, but the expensive stuff isn’t getting brought over. The better stuff is either being used domestically or exported to India/SEA. From my limited experience importing stuff, the biggest common factor is the lack of final quality control. I ordered some small diesel engines because no else makes those but Yanmar and Yanmar prices themselves way out of my range. Even Yanmar doesn’t sell a 5hp engine. The 196cc Chinese diesel was well designed, the parts well built, but final assembly lacks consistence on the bolt torque spec and there was metal shaving left in the crank case. The bigger, more expensive diesel made by a different company had much better quality control, although it’s still necessary to flush the crank case. No one over there seems to do that.
Honestly, there’s a wide range of quality of stuff produced in China, but the expensive stuff isn’t getting brought over. The better stuff is either being used domestically or exported to India/SEA. From my limited experience importing stuff, the biggest common factor is the lack of final quality control. I ordered some small diesel engines because no else makes those but Yanmar and Yanmar prices themselves way out of my range. Even Yanmar doesn’t sell a 5hp engine. The 196cc Chinese diesel was well designed, the parts well built, but final assembly lacks consistence on the bolt torque spec and there was metal shaving left in the crank case. The bigger, more expensive diesel made by a different company had much better quality control, although it’s still necessary to flush the crank case. No one over there seems to do that.