- Apr 4, 2018
Ive never seen ARP hardware used on a stock n54 rod but it can be done as long as you dont distort the bore of the rod. The ARP tightening / stretch specification is to get the fastener just short of its yield point to achieve the fasteners rated clamping load. If the rod isnt designed for that clamping load it can distort the large end bore of the rod. If you want to use ARP spec I would tighten the rod caps with the ARP hardware to ARP spec with the bearings installed off the crank. Check with a bore gauge and make sure you aren't distorting the rod. If your having a shop do it, they should know this already.That is a kit specced for a different BMW engine, not an N54. VAC just did the research to find out the bolts dimensions would work on an N54, marked the price up, and sold them as N54.
When you use ARP rod bolts you are supposed to use ARP torque specs, not OEM. the ARP spec ended up being a lot higher than OEM on mine.