Should piston gudgeon pin retainers be replaced at rebuild?
I never had one fail....there is so little load on them unless the rod is bent. I pulled a 310k 318 motor and the floaters were fine. These are made of spring steel and you compress the ends maybe .1 to install? I wouldnt call that stressing, but if you can get new ones and you got the time and money, you may sleep better. Floaters have 2 rotational surfaces while pressed only have 1: you overheat a pressed fit rod and you may gall the pin but the floater has another bearing surface to take the torque. Think about how a pressed pin could even move in a piston after you try and remove one of those! ? Only way would be to seize the small end and turn it out, to me at least.