I need to install ARP rod bolts on my LS rods. My local builder told me that he was going to heat up the stock bolts and tap them out and tap in the ARP's. He said that there will be no need to re-size them. Other people have told me the same.

Is this a mickeymouse way of getting around re-sizing or has it been done before?

I'm new to this stuff so any input would be good.

 

my stock LS rods had to be re-sized for the ARP's..
as for the stock bolts, you can press them out...

 

ttt before I go to sleep.

 

You need to re-size the big end after the APP's have been torqued to spec.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">You need to re-size the big end after the APP's have been torqued to spec.</TD></TR></TABLE>
How does that work, can you just torque them down and then pull em out to resize the rod or do you have to torque it down on the crank and remove it?

 

i had arp rod bolts installed on my gsr rods. they knock out the old bolts, install the new ones. put them in a clamp or something like that and torque them down to the proper specs. once they are torqued down they begin hte process of resizing them which is kind of like honing them(at least from what i can tell from they way they looked when i got them back). the guy at the machine shop did this twice to make sure that they are within spec. i've been running them for about 3k miles so far and nothing has happened.

 

How much out-of-concentricity is ok for the big-end?

I just wanted to here a different (or affirmative viewpoint). I've been told that they're supposed to be no more than .0005" out-of-round by a couple of sources (ARP being one). That way the eccentricity can be determined exclusively by the bearing w/o any of the big-end's eccentricity to bias it. True?