The piston to the connecting rod.
In an automotive engine, the wrist pin connects the piston to the connecting rod. It allows the piston to move up and down while the connecting rod transfers this motion to the crankshaft. This connection is crucial for proper engine operation and performance.
A wrist pin is the part that connects the piston to the connecting rod.
I believe a gudgeon pin is what the British call a connecting rod pin (or wrist pin or piston pin) in a reciprocating assembly, (piston, connecting rod, crank ) It connects the piston head to the connecting rod.
The gudgeon pin or wrist pin (as it is called in the US), connects the piston to the connecting rod and provides a bearing for the connecting rod to pivot upon as the piston moves.
A wrist pin is a small pin that goes through the side of the piston to hold it to the top of the crankshaft rod. It is called a wrist pin because it allows the piston to move up and down, like moving your wrist up and down.
On a standard patch cable the ends are wired the same. Pin 3 connects to pin 3.
Gudgeon Pin/Piston Pin
The connecting rod has a "wrist pin" which goes through the side of the piston and through the connecting rod. It is one of the most critical fit parts of an engine.The connecting rod or con rod connects the piston to the crank or crankshaft!!!
That is what holds the piston on the rod, You will have to tear the engine down to fix it. Major job.
Rod bearing, cracked piston, loose wrist pin, etc.Rod bearing, cracked piston, loose wrist pin, etc.
Your top end consists of piston, rings, wrist pin and bearings and clips.