New Bolt / Fastener Installation Instructions

While our recommended bolt stretch and clamp loads have been working well for many years, we can’t ignore the fact that rods continue to be subjected to more demanding tensile loads as RPM’s increase. In light of this, CP-Carrillo has taken a closer look at our bolt stretch numbers and we have done extensive testing to determine what is best suited.

In conclusion, increasing stretch and clamp load helps reduce bore distortion at higher RPM and reduce the occasional split-line fretting and micro-welding of the bearing back and the housing bore. Please download our new bolt Installation Instructions and follow these closely. If you have any questions, please call our Technical Sales staff at : 949-567-9000 or email: