06 September 2021 LadaOnline 88 110 98
On modern VAZ engines, when the timing belt breaks, the valves “meet” the piston, which causes critical damage and requires expensive repairs. In this regard, AvtoVAZ decided to modernize its line of engines by installing new pistons that will eliminate such damage, writes CARscope.ru, citing its sources.
The plant's supplier, Federal Mogul, has mastered the production of pistons with recesses (holes, counterbores) in the bottom. Motors with such pistons are popularly called “plug-free”, that is, when the timing belt breaks, the valves do not “plug” into the pistons, the bottoms of which have special grooves for this case.
The new piston group is designed for a range of 1.6-liter engines that are installed on the Lada Granta, Kalina, Largus, Vesta, XRAY models:
- VAZ-11186 (8 cells, 87 hp)
- VAZ-21126 (16 cells, 98 hp)
- VAZ-21127 (16 cells, 106 hp)
- VAZ-21129 (16 cells, 106 hp)
For the 1.8-liter engine with the VAZ-21179 index, a modified piston group is not provided.
Update 08/29/18: The day before the opening of MIAS-2018, AvtoVAZ representatives presented the updated Lada Granta family to the media. Now, on all Granta engines - both 8-valve and 16-valve - they use “stickless” pistons, that is, with grooves where the valve “falls” if the timing belt breaks, and the piston pushed up by inertia will go to it towards. Nikita Gladky (product manager) told Kolesa.Ru about this.
Update 09/04/18: The Lada.online website clarified the information in the official LADA group on VK. Answer:
LADA cars are equipped with engines with plugless pistons
