[jer66nova]

Poll/opinions??

Which are stronger for stroker race application 4340 forged I beam rods or 4340 H beam rods trying to decide, leaning toward the H beam but the I beams are lighter?? anyone??

 

[The Big Al]

I like the H-beam.

I think they are stronger in the main cap area.

IMO
AL

 

[jer66nova]

h beams

I like the H-beam.

I think they are stronger in the main cap area.

IMO
AL

what about clearancing for stroke, ease of fitment, HP ratings looking for feed back??

 

[JRouche]

I dont think either of them need to be clearanced for stroke, if its not a stroked crank. I went the less expensive route at the time (in the 90s), I beams, 4340, 6" rods. Dont think they are gonna break. JR

 

[bowtie0069]

It seems like the most expensive, lightest, highest h.p. rated rods are I-beams. When it comes to cost/h.p. ratings H-beams are slightly more economical. Weights depend on whose rod and what it's made from; I have some H- beams that are in the mid 500g range, but the light ones (500g or less) are usually I-beams.

 

[D-Man]

It seems like the most expensive, lightest, highest h.p. rated rods are I-beams.

Not always.:no: Look at Dyers Top Rods and the old tried and true Carillo rods. Both are H-beam's.

On the flip side, 99% of the billet rods are all I-beam designs. Carillo, Lunati, Crower, Oliver, Howards, etc. all make KILLER I-beams.

As to which design is stronger?? I've seen the arguments made on both sides by some pretty sharp engine builders:yes: and the jury is still out. That fact of the matter is unless you are making the kind of power to put you in the top 1%, you'll never need to worry about either.:no: Because at that point you'll be needing to run aluminum rods to try and lengthen the life of the crank.:devil:

As for stroker clearance, that has more to do with the big end design. 99% of the good aftermarket rods are already a "Cap screw" design that is already clearanced for most applications.:yes:

 

[jer66nova]

rods

Not always.:no: Look at Dyers Top Rods and the old tried and true Carillo rods. Both are H-beam's.

On the flip side, 99% of the billet rods are all I-beam designs. Carillo, Lunati, Crower, Oliver, Howards, etc. all make KILLER I-beams.

As to which design is stronger?? I've seen the arguments made on both sides by some pretty sharp engine builders:yes: and the jury is still out. That fact of the matter is unless you are making the kind of power to put you in the top 1%, you'll never need to worry about either.:no: Because at that point you'll be needing to run aluminum rods to try and lengthen the life of the crank.:devil:

As for stroker clearance, that has more to do with the big end design. 99% of the good aftermarket rods are already a "Cap screw" design that is already clearanced for most applications.:yes:

The rods I am looking at are pro series I beam and are actually heavier than scat h beams and are supposed to handle 850+ hp 4340 material with 874 arp cap screws 670 grams liteweight version weigh in at 595 g.

 

[jer66nova]

rods

I like the H-beam.

I think they are stronger in the main cap area.

IMO
AL

reading this again, Understood what you mean but you meant to say rod cap area Al rolleyes:

 

[levisnteeshirt]

these rods

my engine builder long time friend , gives me hell for looking for cheap stuff , but i think these rods look pretty good. I've saw everything break so i don't put much in a name myself.

these look good to me , even though they're not priced to the moon
http://www.kmjent.com/cart/product.php?productid=1138&cat=7078040&page=1

 

[The Big Al]

reading this again, Understood what you mean but you meant to say rod cap area Al rolleyes:

yea, that thingy that holds the spacer thing-a-ma-jig!:devil:

 

[The Big Al]

It seems like the most expensive, lightest, highest h.p. rated rods are I-beams. When it comes to cost/h.p. ratings H-beams are slightly more economical. Weights depend on whose rod and what it's made from; I have some H- beams that are in the mid 500g range, but the light ones (500g or less) are usually I-beams.

Good point!

I suppose we need to have a budget limit first with the question!:devil:

AL

 

[D-Man]

Good point!

I suppose we need to have a budget limit first with the question!:devil:

AL

Absolutely!!
There's some good budget rods of both designs out there!!:yes:

Like these...

 

[Ragidy57]

i think the rod bolts has alot to do with it

 

[jer66nova]

rods

Absolutely!!
There's some good budget rods of both designs out there!!:yes:

Like these...

those are the type rods i am looking at, now is there anybody out there that can post some pictures of the block where it needs to be clearanced during/after the build up?? and of course you get it to fit then get it balanced after grinding and clearancing the rods