Solid lifters were once a popular choice for high-performance engines, allowing for high RPMs and a unique sound. However, their reliability and maintenance requirements have made them less desirable for modern car owners. Hydraulic lifters, introduced by Cadillac in the 1930s, offer several advantages over solid lifters.
One major benefit of hydraulic lifters is that they don’t require frequent adjustment, unlike solid lifters, which need careful lash settings to maintain optimal valve travel. Additionally, hydraulic lifters are designed to reduce noise and vibration, making them ideal for everyday driving.
Automakers such as Honda have recently switched from solid lifters to hydraulic lifters in their mass-produced cars and engines. The change has eliminated the need for valve adjustment, allowing for smoother operation and reduced maintenance.
While solid lifters were once a favorite among engine builders, hydraulic lifters are now the preferred choice due to their reliability and simplicity. With modern metallurgy and design advancements, hydraulic lifters have become an excellent option for car owners who want a low-maintenance engine.
In contrast to the unique sound of solid lifters, which some enthusiasts still appreciate, hydraulic lifters offer a much quieter operation. This is especially true in modern cars, where noise reduction has become increasingly important.
Overall, while solid lifters may still have their fans among engine enthusiasts, hydraulic lifters have become the go-to choice for most automakers and car owners due to their reliability, simplicity, and reduced maintenance requirements.
Source: https://www.jalopnik.com/1901954/why-cars-stopped-using-solid-lifters