Is a cap part of a connecting rod?
Connecting rods and their matching caps are fastened to the engine’s crankshaft to convert linear motion into rotary motion. They are often constructed together as one piece. Then a process of breaking the cap away from the rod is done at the factory.
What is important when removing main and connecting rod caps?
Note the position of each piston, connecting rod and connecting rod cap before removal, to ensure reinstallation in the same location. Check the tops of the pistons and the sides of the connecting rods for identifying marks.
How are connecting rods and rod caps attached?
Connecting rods and their matching caps are fastened to the engine’s crankshaft to convert linear motion into rotary motion. They are often constructed together as one piece. Then a process of breaking the cap away from the rod is done at the factory. Connecting rods and caps must remain a matched set.
What’s the best way to repair a connecting rod?
Place the connecting rod into the straightening fixture using the correct size big-end and small-end adapters. Install the cap and torque the cap bolts to specifications. Select the appropriate bending bar. It should closely fit the rod to prevent nicks and scratches. Use the bar to bend the rod in small increments.
Is it OK to tighten a rod cap by torque?
“Tightening the fasteners by torque value alone is not an acceptable method for installing the rod cap and should never be used. Since torque value is only measuring the resistance to turning, lube amount and type can introduce too many variables to make sure that the fastener is properly preloaded,” says Skeen.
Why do you need a rod cap on a stroker crank?
This saves weight, allows more clearance for a stroker crank and usually does a better job of holding the rod cap tightly against the rod. It’s also important to remember that rod bolts have a limited service life in racing applications and can only be reused a limited number of times before replacement is necessary.
Do You mark the caps on connecting rods?
Marking the caps with their corresponding rods is done only when necessary. Making an indentation on a connecting rods shaft is a terrible idea. These rods are made of durable metals and often hardened to retain their strength as the engine wears. Even scratching into one of these rods will weaken it, and could end in catastrophe.
Place the connecting rod into the straightening fixture using the correct size big-end and small-end adapters. Install the cap and torque the cap bolts to specifications. Select the appropriate bending bar. It should closely fit the rod to prevent nicks and scratches. Use the bar to bend the rod in small increments.
Do you have to have a connecting rod inspected?
Regardless of a connecting rod’s application (stock, performance or racing), prior to rebuilding or engine assembly, all rods must be inspected, measured and reconditioned before installation. With the cap fully installed onto its rod, measure the rod big-end.
How do you measure the diameter of a connecting rod?
†Using an inside mic, measure the diameter of the big- end bore (with cap installed and fully torqued to spec). Take this measurement from the 12 o’clock point (center of the rod saddle radius) to the 6 o’clock point (center of the cap radius).