To provide the correct valve spring pressure. Easier to customize/work with thinner wire. Easier to cool the wire with oil. Easier to control harmonic vibrations in the valvetrain.
Yes.. The combustion chambers are different
No. The valve springs can remain on the head when removing the head.
A valve spring compressor
The camshaft opens the valve via its Lobes, against the valve spring, to open. The valve springs closes the valve back.
The valve springs support the valves in the engine head. They maintain the valves in a closed position when not in operation and provide the necessary force to close them quickly after they open. This ensures proper sealing and performance of the engine during the intake and exhaust cycles. Additionally, the valve retainers and keepers work with the springs to hold the valves securely in place.
Valve springs keep valves firmly seated in the socket.
The valve springs.
Valve springs
Valve springs are not torqued they have no bolts on them at all, they are held in place by keepers that fit into the notches on the end of the valves.
you need to compress the spring with a valve spring compressor tool, and then remove the valve keepers, and retainer.
It closes and keeps the VALVES shut when needed.
To change the valve springs on a Dodge HEMI engine, first, you'll need to remove the valve covers and potentially the intake manifold for better access. Use a valve spring compressor tool to compress the springs and remove the retainers and springs carefully. Replace the old springs with new ones, ensuring they are seated correctly, then reassemble by following the reverse order. Make sure to check the specifications for torque settings and any necessary adjustments during reassembly.