Limits of stock 1nzfe found once and for all.

[CTScott]

Originally Posted by Blown_xa

I wouldn't tag a certain amount of boost to the limitation of stock rods.... It is power. Most likely the onset of power (torque) is the best measurement of limitation.

True, although it is the instantaneous force of the combustion explosion pushing against the crank before the rotation occurs that does the damage, as that peak force can be in excess of 6000 lbs. That force is the pressure within the cylinder at combustion multiplied by the area of the piston and by the sine of the angle of the rod at TDC (which is about 10 degrees). So, if that force peaks high enough either the bearing or rod will fail.