ARP kopbouten (Honda B20B-motoren + B16 Cilinderkop)
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Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers.
That's why ARP head studs are popular among leading Sport Compact/Import racers.
ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heattreat.
B20B lower block+B16 or B18C cylinder head (B20B VTEC conversion)