The breakup of the GRM straps to Lada Prior with motor 21126 is a fairly common problem. Due to the GRM-belt bypass on the Prior with such a valve engine, the cylinders are collide with the cylinders. This problem has several solutions: Regular rotation of the belt. This method is not always helpful because the market has a large number of sub-decks that do not "foot out". Installing piston from motor 21124. Minus this way is the reduction of the power of the engine due to the reduction of compression and the large inertial masses of piston. As in the previous version, there is a fall in power, but on a smaller scale. Not leading the engine deforation. Minus is quite high price. Use of the GRM from the VAZ 2112. This method does not prevent a meeting of the valves and pistons at the end of the belt, but increases the reliability of the drive at the expense of metallic rollers.
- Regular rotation of the belt. This method is not always helpful because the market has a large number of sub-decks that do not "foot out" time.
- Install piston engine 21124. Minus this way is the reduction of the power of the motor due to the reduction of the compression ratio and the large inertial masses of the piston.
- Use of special "lifeless" pistons from third parties. As in the previous version, there is a fall in power, but on a smaller scale.
- Use of special pistons with valve and propellents. Not leading the engine deforation. Minus is a fairly high price.
- Use of the GRM drive from the VAZ 2112. This method does not prevent a meeting of the valves and pistons at the end of the belt, but increases the reliability of the drive at the expense of metallic rollers.