Recently made 717/508 with the Manley H-Beam rods, seems to be holding great so far; I have the ARP 2000 studs for both the head and rods too.

 

nice. how many miles now?

 

A little under 5000. Actually my rings are worn now so I'm doing a rebuild in the next few weeks and will be upgrading to Ibeams; just want to be on the safe side incase they actually do snap/bend.

 

I'm wondering now how these "turbo tuff" H beams compare to the "turbo tuff" i-beams in terms of absolute strength.

 

let us know hows the rod holds after 5000 during your rebuild.

given the price and and studs, i would like to know too.

 

I beam will always be stronger

 

Yes. Stronger to withstand vertical compression forces from pistons, but weaker to resist lateral tension from its own mass at high RPMs. I wonder if there is a high enough RPM where the I beam will start vibrating (like a tuning fork). Yes, I wonder on the weirdest things!

 

i was on i beams before the bearings gave way. able to hold alot of abuse and it was pushing 700hp. There are alot of reviews for ibeams and hbeams but not the htuff.

 

how high were you revving? And which bearings were you using?

 

Jackson Auto Machine was recommending these before, they know their way around a 4G63. It's going to be somewhere between the budget rod and the I-beam. I'd guess safe to 700ish whp? For the extra $44 over the budget rod, might as well. ExtremePSI sells them for $399.

 

9k. acl bearings. was on motul xcess iirc when it gave way

can share link for the recommendation?

 

Do you think the rod weight wore a bearing out at 9k?

 

possible. but i reckon its the oil. because i usually used motul 300v and it was detuned to 600hp at the point when it broke.

 

Do you have pictures of broken bearings and close up of the wear areas?

 

i didnt take any photos but the bearings and crankshaft gone, block scratched, rod and piston ok.