ARP Rod Bolt Kit: Honda/Acura K20

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Your Price: $115.47
Part Number:arp208-6003

A large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They%u2019re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The "weak link" in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005". Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.


In some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved 

reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you're on a budget, it's best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load - plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective - but will definitely give you an extra margin of safety and longer service life.


You should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you'll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It's easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You'll find the ARP name proudly stamped on each bolt as your assurance of quality. 


Features:

* Forged in-house at ARP using only the finest quality materials

* Heat-treated using special vertical racks to assure complete 360� penetration

* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength

* Precision CNC-machined to exacting specifications

* Specially designed for optimum reliability in each application


Wave-Loc Features:

* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress %u2013 which strengthens the rod itself!

* Provides snug fit for all OEM connecting rods (interference range of .001" to .005"), despite wide range of factory rod bolt hole tolerances.

* Available for most applications.

* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and "built-in" stress risers.

* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no "digging"


Materials Used In ARP Connecting Rod Bolts:

8740 CHROME MOLY:

Until the development of today's modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.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 ARP2000 share similar characteristics - ARP2000 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 aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.


Bolt/Stud Head: E Style (12Point)


Part Number: 208-6003


FITMENT:

2002-2006 Acura RSX-S

2006-2011 Honda Civic Si

2008 Honda Civic Mugen Si

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