Originally Posted by rmdhawaii
It's too bad that manufacturers don't put out any specs on Mean Time Between Failures (MTBF) for conrods based on RPM and fuel consumption.
Question(s):
1. Why raise the piston to the compressed position before removing the rear plate?
2. What would cause a crankshaft pin to go out of round?
3. Sustained over revving for how long?
4. What would you consider significant overheating and for how long?
As always, thanks so much for your time and knowledge Alfonso.
1.- You could do it with the backplate off too. In that position the piston is catched by the pinch and by just moving the crank side to side (very little) without the piston moving, you are able to see the play on the crankpin end.
2.- The crankpin will allways go out of round with time, because the greatest stress over it occurs with every change in rotation of the rod/crank after explosion more or less at 45º, which you'll see why when doing the wear/play inspection...ther is a sudden clank on the pin.
3.- For example you loose radio and the car goes loose overrevving until it stops or gets stopped by someone.
4.- Overheating.... for lets say one tank...
AFM