Kk lets do some math 720/6 = 120 degrees each firing stroke over laps by 33% Therefore every ft lb of torque generated by the crank at 4000 rpms at the same mep will generate 18 percent more stress on the crank at 7000 rpms on the power stroke but it will add additional pressures at the end of the exhaust stroke ona turbo engine which aides keeping rod expansion down. However it has been proven that most engine failures do not occur on the power stroke they occur at the end of the exhaust stroke where there is little pressure to help slow the high velocity piston down. THis causes rod elongation all the way through to the bottem of the intake stroke then the rod is slammed upwards.

This is why more engines fail at high rpm under closed throttle conditions then high rpm while under wide open throttle. Because the cylinders are running extremely low dynamics and causing this to happen twice per a cycle. Yes the stresses are slightly higher but the forces dont make a diffrence where it counts.

As i was explaining the reason the diffrential failed is because a 30+ pound flywheel and a 150 ft lb engine was hitting the spider gears in the diffrential under a very limited amount of time with a very low first gear/final drive ratio with no wheel spin more then likely generating 1000 ft lbs of force or more spike. Would you like for me to draw Delta acceleration/acceleration/velocity graphs of every single part in order and how that affected the diffrential?

Also the hertz comment was not appropriate for the discussion were not adding firing cycles were adding power to each cycle and the speed at which cycle is completed. The hertz at which the engine out puts torque will remain the same within the time frame of the cycling.

By adding a hz to the system you would be adding 6 more cylinders? However i might be off base here. Inertial dynamics/metal fatigues are not a paticular strong point for me.

Also. No im not an engineer. However i am educated.

Point 2 to stop calling me an ass clown. Act as if you were an adult. Have a conversation without buffering your penis size by calling someone a name from 3000 miles away.

Ex-cat cams dealer. Today we do motor mounts.. Tommorow. Intake manifolds