From what I understand, a connecting rod is put to it's greatest test under tensile loads and not compressive force. Does anyone know which connecting rod design, H-beam or I-beam, performs best under said conditions?
H beam vs. I beam
- Thread starter Supadeviljuice
- Start date
I have Pauter rods and they have an I beam design. The tensile strength of the billet material used to make them is 190K; someone correct me if I am wrong. However when I purchased these rods I was more concerned with the fasterners that were attaching them to the crank. A system is only as strong as it's weakest link, be sure to get connecting rod bolts with at least 190K of tensile strength otherwise you will always be prone to mechanical failure. Hope this helps and good luck!
Khris
Khris
Supadeviljuice;1085299 said:
They both do there job correctly given a correct design.
Basically the rods main job at high rpm and power is to keep the piston from launching itself into high orbit as that is where the most force is exherted of a non-slowing piston.
osofast7m;1085374 said:
no, you want the bolts to have equivalent or greater load carrying capacity than the portion of the rod with the smallest cross-section.
for example:
if the rod x-section is 1" square (ie, it can support 190,000 lbs)
and your combined bolt x-section is 0.5" square, you want a minimum bolt strength of 380 ksi.
So in a practical sense, fasteners on high quality rods are the biggest worry. Cool deal. I have eagles w/ ARP's, so I imagine my weakest link is definitely not my rods. :icon_wink
Do you really want tougher bolts than rods? Wouldn't that make your point of failure be the rod itself, rather than a bolt?
I always try to set things up so that the cheapest part to replace fails first...
I always try to set things up so that the cheapest part to replace fails first...
I don't think you'll have to worry about breaking one of the Eagle, Pauter, Crower rods first anyways Grim unless something went horribly wrong with the motor...
GrimJack;1085727 said:
Have you ever seen or experienced a rod bolt failure? If you break a rod bolt, you certainly won't be re-using the rod.
Come to think of it, I don't think so... I've seen lots of failed rods, but I can't recall seeing a failed rod bolt.adampecush;1085735 said:
I don't suppose there is anything connected to the crank that you can get to fail gracefully under load.
Wow, that looks like something took the runner up prize in an axe fight.IJ.;1085745 said:
What's the bit in the center bottom? Or what was it originally?
It was the Cam plug at the back of the block!
It actually broke the boss off and took out the driveplate and torque converter!
It actually broke the boss off and took out the driveplate and torque converter!
or just put in the stockers.........
rule of thumb over 500 whp go forged for the reliability. i know others have done much more on stock internals but my crowers and je's help me sleep at night
-shane
need new tires;1085766 said:
-shane
Shane, what are the end two rods? I am guessing the first two are Stock toyota, the third is Eagle H beam. one a crower? I like you pic. for referance so I am kind of interested in the end two.