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 specific machining requirements for the SCR5471 conrods?
The SCR5471 conrods may require honing of the big-end or small-end to achieve the correct fitment due to potential variations in journal and pin sizes. It's essential to check clearances and ensure proper alignment during installation.
What is the recommended installation procedure for the SCR5471 conrods?
When installing the SCR5471 conrods, ensure that the big end is properly aligned with the crankshaft journal. Use ARP's latest instructions for bolt tightening, and verify that the rod bolts are torqued or stretched according to the specifications for 3/8" bolts.
What is the weight of the SCR5471 conrods and how does it affect performance?
The total weight of the SCR5471 conrods is 562 grams, with a rotating weight of 401 grams and a reciprocating weight of 161 grams. A lighter conrod can improve engine response and RPM capabilities, but ensure that the overall rotating assembly is balanced for optimal performance.
Can the SCR5471 conrods be used in applications beyond the Porsche 964 and RSR engines?
While the SCR5471 conrods are specifically designed for Porsche 964 and RSR engines, they may be adaptable for other applications with similar specifications. However, it's crucial to verify compatibility with the specific engine setup and requirements.
What type of fasteners are included with the SCR5471 conrods?
The SCR5471 conrods come with custom-designed Carrillo fasteners, which are engineered for high strength and reliability. Ensure to follow the recommended installation procedures for these fasteners to maintain the integrity of the conrod assembly.
