h beam or i beam
 

if you could choose between h beam and i beam rods for a ls b series motor what would u pick and why

Re: h beam or i beam
 

x-beam....cuz you gotta be a complete ------ retard to break one... but seeings how you posted on HMT, we all know damn well you aint paying 800bucks on a set of rods...

so h-beams, cuz they are like 309shipped from ------------- ;) :-*

Re: h beam or i beam
 

i went with h-beams in my ls, mostly because they are cheap and easy to find

Re: h beam or i beam
 

well i found some i beam rods for ten more bucks than the h beams there probe rods and supposedly decent sh*t so i was wondering i figured if i went eagle i would go h beam im not making uber ass powers so eagle h beams would be ok but for ten extra bucks if i beams are better why not get them you know

Re: h beam or i beam
 

http://pauter.com/acura_honda.htm ;)

h-beams are strong rods, your not gonna break one...

i-beams are generally lighter, thus better for NA apps...

Re: h beam or i beam
 

289 from xenocron ;)

Re: h beam or i beam
 

https://www.homemadeturbo.com/forum/...?topic=89127.0

guess they are... :6

Re: h beam or i beam
 

Re: h beam or i beam
 

tuner toys h-beams FTW!!!!!! :y

Re: h beam or i beam
 

lol thats what i was ganna write

Re: h beam or i beam
 

actually an I beam is structually strong then an H beam.

Re: h beam or i beam
 

You're a damn idiot

Re: h beam or i beam
 

then why do car manufactures use I-beam rods?

Re: h beam or i beam
 

cuz they are lighter and cheaper :1

Re: h beam or i beam
 

there shaped in an I beam over an h-beam for strength.

Re: h beam or i beam
 

yea, im sure auto manufacturers use I beams cause they are stronger.....


i guess thats why they use plastic in stead of steel now too

Re: h beam or i beam
 

they do. an i beam is stronger. the same same rod would be weaker as a h beam

what do they use on buildings and bridges,

Re: h beam or i beam
 

I'm in school for this ----, so I happen to know a little about it. So first off, let me say that your argument that I beams are stronger than H beams, or vice versa, is totally invalid with out other information for a detailed comparison. You cant' just say 'the same rod' and actually know enough to even come close to an accurate estimation. What material are they made out of? What kind of construction are they? Have they been heat treated or not? When you say they are stronger do you mean that if i have an I beam that weighs the same as an H beam, the I beam will withstand larger loads before buckling? What if the H beam is beefed up and weighs 3 times more than the I beam? So be more specific and maybe there can be an actual comparison which will lead to valid information being ------, instead of some information based on wack assumptions



and i'd say an auto maker uses something over a different part because it will save them money, not because its the best part for the application.

Re: h beam or i beam
 

I'd use J-beams, because J-beams are mad JDM y0!

Re: h beam or i beam
 

Don't bother trying to explain to cloud, he won't believe anything unless he reads it posted by some noob on a forum first :S


And accountants have a huge say in what parts get put on a car. Why didn't all our Hondas have built motors from the factory?

Re: h beam or i beam
 

ok, what do top fuel race car's use. I-beam.

http://www.bmeltd.com/rods.htm

and I quote " connecting rods are usually made of forged or cast steel formed in an I-beam shape for strength"

from my text book, automotive service, third edition. and the class is ase natef certified.

Re: h beam or i beam
 

so your book doesn't make the comparison of H and I beams? I thought thats what we were talking/arguing about.....

Re: h beam or i beam
 

there's actually a natef ceft. question that compares the two,. that was on a final.

Re: h beam or i beam
 

Since I have to ask, I'd be interested to see the question.

Re: h beam or i beam
 

I get it tomorrow.

Re: h beam or i beam
 

"most connecting rods are formed in a ________ shape for strength."

T-beam
H-beam
I-beam
U-beam

Re: h beam or i beam
 

How the ---- does that mean I beams are stronger than H beams?

You are totally worthless.

Re: h beam or i beam
 

Depends on which direction the rod will fail. I have no fact content to support my opinion so read on only for my 2 cents, I dropped out of ME like a drunk idiot.

I can't see how rods would have near the side loading to make an H rod better suited the application. The big end of the rod is basically reciprocating front to back at a high rate while the little end sits still. So the rod's going to want to flex in that direction. Then factor in the assembly going up and down in the cylinder and the forces trying to compress the rod it's going to want to bend in the same direction. Most broken rods I've seen were bent in that direction before they broke, not bent towards the other cylinders.

Isn't the point of an h or i beam to separate the material in the same direction as the bending force? basically separating it into two bars, one in compression and one in tension?

With those thoughts I've always wondered which is better and why aftermarket forged rods are H-beams, but I have opinions about cost of manufacturing.

Re: h beam or i beam
 

Re: h beam or i beam
 

so you quoted an article that has no factual evidence on why they chose what they chose other than, "well those guys are using it, so they must be right"? There still is no valid comparison anywhere in any of your posts. I'm not saying you are wrong, I am trying to point out that what you are saying is based on nothing more than a belief that evidently can't be confirmed by you.

Re: h beam or i beam
 

Yes it does matter the direction they would fail. A I beam loaded from the oposite direction is a H beam. I would imagine that the majority of rod failures are in the form of bending. Since we can't be sure of the mode of failure (the plane in which the bending occours), it would be difficult to make any comparison without some serious destructive testing. Again, this depends greatly on many factors, and most engineers who have worked with this stuff could probably make a great guess as to what would happen.

Re: h beam or i beam
 

yes, your right. I haven't found any actually data on why it's stronger, but do I really need to. I'm sure they have already and this is creditable to me. I'm sure I could drudge up some structual engineering books that confirm this.

Re: h beam or i beam
 

STOCK BEAM ftw unless its a d

Re: h beam or i beam
 

Here's what I think.

An "H" and an "I" are the same ------- shape, just turned 90 degrees

You can make a rod wider perpendicular to the crank, as long as it clears the base of the bore, more easily than you can make the rod wider parallel with the crank. You'd be limited by the size of the journal.

Therefore the H beam provides more room to leave more material, thus making the rod beefier and stronger than the I beam.



Maybe the I beam is a stronger shape if the two rods use the same amount of material, I don't know. What I do know is H-beams for an LS are a lot cheaper and are stronger and beefier. Therefore buy H-beams



But I don't know ----. I'm done babbling.

Re: h beam or i beam
 

H-Beams, no reason not to

Re: h beam or i beam
 

Punkisdeadfag

Re: h beam or i beam
 

Heres a vague answer:
1/12*(b)(h^3)