Callies CompStar Connecting Rods,
6.125" length,
2.100" crank pin,
.927 wrist pin,
Includes ARP 2000 Series Connecting Rod Bolts
618 grams ea
Sold as set of 8

Compstar engineering leads the way in High Value connecting rod design. The original Compstar H-beam rods were conceived around the idea that high quality and affordability can come in the same package. The time saved in preparation for use becomes an added value that you'll discover during your engine build. Dimensional repeatability and the proper clearances for high performance use right out of the box also add value, as well as peace of mind. Attention to detail has long been the trademark of Compstar rods.

Features of the CompStar Rod

 · PARTING SURFACE EDGE CHAMFERED This is normally done by the engine builder to prevent scraping material from the backside of the bearing insert during installation of the bearing into the rod.

· BEARING TAB SLOT FREE OF BURRS Many of our competitor's rods share a common issue of burrs left in the bearing tab slot during manufacturing. In this situation, the burr prohibits the bearing locator tab from fitting into the receiver slot in the rod.

 · PIN BUSHING CHAMFERED BEFORE HONING Another common problem is a burr on one, or both ends of the wristpin bushing. This occurs when the manufacturer trims, or chamfers the bushing after honing to finished size. In this case, the pin either won't slide into the bushing, will slide into one side, but won't pass through the other, or fits tightly in the bushing, as if it has insufficient clearance.

 · ARP 2000 SERIES BOLTS The ARP 2000 bolt is an upgrade from the typical 8740 material used in most rods of this type. Use of this bolt increases clamping force between the rod and cap by approximately 2000 psi.

 · RE-TORQUE DURING MANUFACTURING During manufacture our rods are initially torqued and rough honed. The bolts are removed, and the rod & cap are then separated allowing the release of residual stress. The rods are then reassembled and re-torqued for final honing. This assures that the rod will still be round when you install it in an engine.

 · LESS PREP TIME By incorporating the above features into our rod, we've saved the end user a minimum of an hour of his valuable time. Few things can be more annoying than to unpackage a product for use, only to find that it's not really ready for use. Our goal is to produce a rod that's ready for assembly right out of the box.

 · SUPERIOR QUALITY CONTROL Finish honing is done on a state of the art Sunnen Krossgrinder. Tolerance is less than .0002" maximum out of round, taper, hourglass, or barrel shape. The bearing housing surface finish typically has an RA of 9-13.