Favorite BBC Rod Thread
#72
Registered

Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
#73
Registered

Joined: Mar 2008
Posts: 3,613
Likes: 375
From: Traverse City MI
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.
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.
#75
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.
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.
#76
#77
Registered

Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
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.
#78
Registered

Joined: Jun 2012
Posts: 1,455
Likes: 1
From: OK CIty, OK
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).
#80
Registered

Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
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.



