Severity of Broken Valve Damage

The safe answer is to delete it and see if it is bent like damaged rods, since it looks like it is colliding on the wrist pin on one side. By removing the cylinder on the other side, removing the rod from the crankshaft and evaluating what is being seen, you can consult the builder and get his opinion.

Normally, if the valve breaks very early in the life of the engine, it is a bad valve. Many valves are divided into two parts, valve stem and valve head. After mass transformation without bulb failure, I made most of the time fly in the log and used a Manley Valve One Piece Stainless Steel Valve. This is not that I have never encountered a problem. Due to a defect in head casting, there was a problem with my valve guide. There is also a valve spring problem that can be solved by converting it to a Chevrolet valve spring, but this is another story.

Am I interested, have the valve just broken, or have the guide been broken when the piston struck the valve?

If the valve spring of the engine is damaged or weakened, various running performance and performance problems may occur. If the valve spring is damaged, excessive valve noise may occur, compression may be impaired, or serious damage may occur inside the engine. Behavior after break gives the most serious damage to the engine. If the spring breaks, the valve may collapse enough to fall into the cylinder and the piston may hit the cylinder. In addition, the stem lock or retainer releases the valve and falls into the cylinder, seriously damaging the piston, cylinder head, and other nearby parts.

Cylinder head valves are an important part of the engine, opening and closing up to 2,500 times per minute under normal operating conditions. If one or more of these valves are damaged, as a result, the output will be reduced, not only will the fuel economy be insufficient, but the engine could be completely damaged. The two most common types of bulb failure are bending / breaking valves and combustion valves. The most common failure of the valve is due to bending and breakage due to contact with the piston. Valve contacting the top of the piston is caused by erroneous engine synchronization due to timing chain / belt breakage and improper installation of new belt and chain. If you think that the engine has a bent or damaged valve, it is important not to start the engine. This is due to the high cost of damage to the cylinder head, piston, and cylinder bores.