Produktbeschreibung
ARP Kopfschrauben für Nissan 200SX S13 Motor CA18DET "head stud kit"
ARP The World Leader In Fastener Technology!
Automotive Racing Products produce high grade engine fasteners. When building an engine it is critical to obtain optimum sealing.
During the manufacturing process all ARP fasteners are constructed from premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is then placed vertically in special racks and precisely heat treated to 200000 psi. This procedure ensures complete heat penetration and the results are far superior to lesser quality studs from other manufacturers.
Following heat treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. Its important to note that lesser quality studs are not even centerless ground. The material is thread rolled in bar stock form (mostly before heat treat when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that wont happen with inferior quality head studs.
ARP studs are thread rolled after heat treat, which gives them about 1000% (thats ten times) better fatigue strength than those studs that are threaded prior to heat treat (a very common industry practice). It costs a lot more to do it this way, because its tough on tooling, but the results are well worth the extra effort.
Clearly, they are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.
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