You may need to replace a piston head if you notice significant loss of compression, which can lead to poor engine performance and increased oil consumption. Additionally, visible damage such as cracks, scoring, or excessive wear can indicate that the piston head is compromised. Unusual noises from the engine, such as knocking or tapping sounds, can also suggest piston issues. Regular inspection and monitoring of engine performance are key to identifying when a replacement is necessary.
If it is leaking, cracked, or the piston is seized it needs replaced.
Remove it and bring to an auto parts store for testing
you know the head click on that and your done
easiest way to check pcv is to pull it out of where it is and shake it if it rattles, it is good. if it does not rattle it is clogged up and needs replacing
To ensure the piston top is facing the correct direction after being placed in the block, check for any alignment marks or notches on the piston and block that indicate the proper orientation. Additionally, the piston usually has a specific shape or design (such as a valve relief) that should align with the cylinder head and valves. Finally, confirming that the piston rings are correctly seated and not twisted can also help verify proper installation.
If your gonna scrap it. then yes. If your gonna run it, no way. If you know it has a crack then you've got the head off. Replace it, Dude.
If your engine jumps when accelerating, or when certain noises are made when engine torques.
A head gasket is something that you can replace yourself but it is only advisable if you know how to do so. This sort of project is not something you learn easily.
Do a compression test.
S&W never made a piston as far as I know.
Possibly and you may also have a cracked head, or busted piston. The only way to know for sure is to remove the head and see what you have. You will have damage but it may not be bad or it may be very bad.
You won't know it needs replacing - it fails catastrophically, without any symptoms. Factory recommended replacement mileage is 95,000 miles. If you have passed that mileage you are living on borrowed time.