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ARP Head Studs Gen 1

  • ARP MINI Cooper Head Studs 201-4301
8.00 LBS
Calculated at checkout

Product Description

Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons (like the ones in a Cooper) or power adders like an RMW Jesus head and your stock S supercharger. That's why ARP head studs are popular among leading Sport Compact/Import racers.

You should know that ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is precisely heat-treated to 200,000 psi. 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. It's 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).

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 heat-treat. You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) equalizes the "stretch" of the studs, which makes for a more consistent clamping force. This helps prevent blown head gaskets, and assures optimum sealing!

Premium parallel ground washers and assembly lube are also included with each kit.

Note: You will need a 12 point, 12mm,  Deepwell 3/8 drive socket.

Instructions Download

Product Videos

Special Presentation: How ARP Fasteners Are Made Video Series Part 1/3 V8TV (05:29)
http://www.v8tvshow.com - It's no secret that ARP manufactures the highest quality hardware to assemble your engine, but we wanted to learn exactly what makes ARP fasteners different from the original factory bolts. In this 3-part video series, V8TV's Kelle Oeste takes an extensive tour of the 9-building ARP manufacturing complex in Southern California to learn all about the technology and processes that make ARP bolts the fasteners of choice in nearly every form of engine powered racing. The ARP crew also gives us installation, torquing, and fastener selection tips of their all USA made products.
  • Special Presen...
    http://www.v8tvshow.com - It's no secret that ARP manufactures...
  • Special Presen...
    http://www.v8tvshow.com - It's no secret that ARP manufactures...
  • Special Presen...
    http://www.v8tvshow.com - It's no secret that ARP manufactures...

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