Manufactured from USA made oversized proprietary steel forgings to enable proper grain flow and guarantee removal of any surface inclusions, CP-Carrillo ensures strength and durability of each Carrillo rod. Consistent and reliable from the first point of precision manufacturing all the way to extreme uses in racing world, exclusive Carrillo H beam and Pro (S)A designs offer the highest strength-to-weight ratio; Custom designed fasteners; 100 traceability; multi-step final inspection; CP-Carrillo moly based fastener lubrication included.
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What bolts do these conrods use and how should I tighten them?
These rods use ARP conrod bolts, usually ARP2000 as standard with L19 or CA625+ available on some models. ARP2000 bolts are generally torqued to around 55 ft-lb for 3/8 inch and around 75 ft-lb for 7/16 inch when using ARP Ultra-Torque lube. L19 bolts must be tightened by stretch, not torque. Always refer to the latest ARP instructions for exact specifications.
Do these conrods have a horsepower rating or warranty?
No. Like other performance rods, they do not carry a horsepower or performance warranty. Spool warrants workmanship before installation, but once fitted, power handling depends entirely on machining, clearances, tuning, fuel, boost level and rpm.
Do the big end and small end need machining?
They often do. Crank journals and pin bores vary between engines, so your builder should measure the big end oil clearance and small end pin clearance and hone as required before assembly.
What are the recommended machining requirements for the SCR5458 conrods?
The SCR5458 conrods may require honing of the big-end and small-end to achieve the correct clearances. It's essential to measure the journal and pin sizes accurately, as factory tolerances can vary. Always consult the engine builder's specifications for precise machining needs.
What is the weight of the SCR5458 conrods, and how does it affect performance?
The SCR5458 conrods have a total weight of 568 grams, with a rotating weight of 400 grams and a reciprocating weight of 168 grams. The lightweight design contributes to reduced inertia, allowing for quicker engine response and higher RPM capabilities, which is beneficial in performance applications.
Can the SCR5458 conrods be used in a high-boost application?
Yes, the SCR5458 conrods are designed for high-performance use, including turbocharged applications. However, reliability at high boost levels will depend on proper machining, clearances, tuning, and fuel quality. Ensure that the engine is built to handle the expected power levels.
What is the centre-to-centre length of the SCR5458 conrods, and why is it important?
The SCR5458 conrods have a centre-to-centre length of 5.03 inches (127.75 mm). This dimension is critical for maintaining the correct geometry in the engine, ensuring optimal piston motion and preventing issues such as piston-to-valve interference.
What type of fasteners are included with the SCR5458 conrods?
The SCR5458 conrods come with 3/8-inch ARP2000 bolts as standard. These fasteners provide excellent strength and reliability for high-performance applications. Always follow ARP's latest instructions for installation and torque specifications.
