then you get some US race engine guru saying;-
"For years the battle has raged on as to which is better, an I-beam or an H-beam. In pure tension and compression, they are both equally capable, assuming equal cross-sectional area. But when you add the fact that some components of the combustion event attempt to screw the piston down the cylinder, the greater distance from the center-line of the pin to the edge of the beam gives the H-beam an advantage in resisting such twisting forces. We've seen both designs used successfully in a wide variety of extreme applications, so the jury is still out. Perhaps the biggest advantage of the H-beam design is that it gives the manufacturer more flexibility when sculpting the rod into the most effective form from a strength-to-mass standpoint"
Honestly i believe for our cars that ultimately the quality is more important than design, take for example TOMEI, TRUST (Carrillo) and various other companies all choose to use H-beam over I-beam because the service life is considered longer.
Tomei
http://www.tomei-p.co.jp/_2003web-catalogue/e060_conrod.html
GREDDY (offer H as premium and I as entry level)
http://www.trust-power.com/05engine/connecting_rod_i.html
HKS (premium rods)
http://www.hks-power.co.jp/products/engine...ting/index.html
Flip a coin and go for a reputable brand....
Budget - I-beam or A-beam (brand) or SCAT H-beams
Flush - H-beam (brand)
Rolling- exotic shizzle