Straightening Rolls Royce Springfield Silver Ghost rods after boring. In this case, all rods are straight, but have a slight twist. Which is likely an artifact of the clamps on our rod boring machine. They are exactly consistent and this is typical of our machine. The actual twist is just a couple of thousandths, but needs to be removed by twisting the rod past its elastic limit and re-checking on the rod machine. It’s a small detail, but a vital part of a smooth running Ghost engine. Www.vintagegaragevt.com