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Home › Engine & Components › Pistons & Con Rods › 8 x ARP 2000 K Series Con Rod Bolts
8 x ARP 2000 K Series Con Rod Bolts
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Pack of 8 x ARP2000® K Series Con Rod Bolts
ARP was the first company to design and engineer fasteners specifically for racing.
ARP2000® is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and 2000 share similar characteristics – 2000 is capable of achieving a clamp load at 220,000 psi.
ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminium rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.
They are far superior to OEM fasteners in terms of durability and service life. Threads are rolled after heat treat to ensure optimum fatigue strength.
The most important fasteners in any engine are the connecting rod bolts. A broken bolt will lead to catastrophic engine failure. The most critical joint is where the connecting rod halves mate. The rod bolts must support the primary tension loads caused by each rotation of the crankshaft.
When the crank rotates, the big end of the connecting rod essentially becomes oval-shaped and the rod bolts bend. As the crankshaft continues to rotate, the rod becomes round again. With alternating tension loads and cyclic bending of the bolts, it is very important to install fasteners that are able to exert a clamping force greater than the load imposed upon the joint.
In addition to utilising a rod bolt with sufficient strength to withstand the tremendous cyclical strains placed upon it, it is imperative that the bolts be properly tightened.
Included in the pack is a sachet of assembly lubricant.
This material is heat-treated to provide a tensile strength in the 220,000 psi range, which is substantially stronger than the OEM bolts.
Cycle testing shows ARP High Performance rod bolts to be nearly five times more reliable than stock bolts.
Can be used on our EP Tuning High Strength balanced steel con rods also with Arrow, Farndon or standard K Series Con Rods.
This fits the following models:
- S1 K SERIES ELISE
- S2 K SERIES ELISE
- S1 EXIGE & MOTORSPORT
- LOTUS 340R
