You'd think it would just bust the wrist pin out of the skirt as opposed to twisting the rod. This is the only way I've seen them "twisted". Pics would be cool!

it is bent but is it twisted?i have seen that in a hydraulic lock .

The thickest part of a H beam rod is directly below the pin

The thickest part of a I beam rod is to the sides of the pin, potentially allowing the force to split the rod like a banna peal.

Some brands have stronger I beam designs, but makes you wonder why they use an H beam design on thier less expensive rods?? Maybe because the H beam design is stronger thus helping keep the cost down.....

Also some prefer I beam because they have more potential to be "saved" if damage occurs. Where any little ding you should replace the H beam.

thats the only way I ever seen them, "bent"

My machinist said the H beam is normally stronger also, he uses either depending on customer wants... but did tell me the same thing if they get any imperfection in them it can fail, but like he said... if that is happening you got issues anyway lol

No, it is bent due to hydrolocking. That is why I said twisted in quotes. Would love to see the pics where they are turned like a barber pole.

so would I.i have seen the scrap metal detonation can produce but i have never seen a twisted rod,that is a new on on me.i guess anything is possible.

Me too, but I can't fathom that happening. No twist can be imparted from the big end, and I really don't see any twist from the piston end (thought it may freely do so). Last thing up would be rod's section, but it is symmetrical about X and Y when viewed axially (normal to the primary forces of regular operation).

Maybe he means "twist" as in "bent" not sure... I never seen a rod like a barber pole pic would show us...

i don,t think he means bent because he stated that detonation causes the piston to TWIST.back in my racing days i met a lot of nitrous guys who would push it past the limit.serious detonation can ruin an engine in less than a second.one time a guy took the head off and it and what was left of the piston looked like someone was in there with a torch but no TWISTED rod.