Turtle n Peeps wrote:
It depends on the engine.
For instance the old 1994 on up 6.5 will defuel if the water temp gets over 225 degrees F. It will also defuel if the boost pressures get out of spec.
PS, weak powder rods on the 7.3 have nothing to do with how hot the tops of a piston can get before melting.
I didn't say that piston rods had anything to do with it. I have just heard from many in the Powerstroke forums and my rebuilders that those year model of 7.3L Powerstrokes with the weaker powdered metal rods could not handle as high EGT's and pressures as prior years with forged rods could.
