ARP Rod Bolt Torque and Rod Deformation

[Kickerbeast]

So I had a total brain fart and I picked up ARP rod bolts and was going to swap them in my 6-bolt bottom end while I had the pan off just to be safe since I'll be pushing the bottom end pretty hard. The head is still on it and I didn't have any plans to pull the head right now. I didn't think about the fact that you need to recheck and machine the rods to be round again at the higher torque. My main question is this. Has anyone run stock torque on the ARPs? This would keep the bore from being out of round but I don't know what overall effect this would have on the strength of the bolts. I would think there wouldn't be a change because there would be less stress on the bolt but then again does that mean the bolt would actually be able to stretch some since it isn't under as much preload? Looking to see if anyone has or knows of anyone who has done this.

 

[BogusSVO]

Its the swedging, and the act of knocking the bots out and in that deforms the rod bore, not so much the torque setting.

 

[Kickerbeast]

I wonder then if I could make something that could press the bolt out and be less likely to deform anything. I certainly don't want to go to town hammering on it or anything.

So how does this compare to using ARP main bolts then? You are supposed to line bore those as well. Is this mostly due to the increased torque flexing the block a little more? Same reason for using a torque plate when line boring?

 

[BogusSVO]

A lot less metal on a rod than a main cap and block

Along with mass and stress that rods have to deal with.

Rod bolts have a press fit, where a main stud is threaded into the block.

If you made something like that, you make a mint and take work away from me.

 

[90laserRSfwd]

Dale speaks the truth..

 

[Kickerbeast]

Oh I'm not doubting it. Just trying to figure out any options now. I have a spare set of 6 bolt stock rods so maybe I'll tinker with some removal and install methods and see what happens.