{"product_id":"head-stud-kit-arp-202-4301","title":"Head Stud Kit ARP 202-4301","description":"\u003cp\u003e(RB20\/25 DET head stud kit) Built for the (89-98) Nissan Skyline.\u003c\/p\u003e\u003cp\u003eIn small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide, and superchargers, obtaining the optimum cylinder head-to-block sealing is especially critical.\u003c\/p\u003e\u003cp\u003eARP head studs are popular among leading Sport Compact\/Import racers for this reason.\u003c\/p\u003e\u003cp\u003eA premium grade 8740 alloy, rated far superior to 'aircraft' quality, is used by ARP.\u003c\/p\u003e\u003cp\u003eEach stud is precisely heat-treated to 200,000 psi.\u003c\/p\u003e\u003cp\u003eAfter heat-treat, each stud is centerless ground to achieve close to perfectly concentric dimensions.\u003c\/p\u003e\u003cp\u003eThis procedure involves about ten very slight cuts, resulting in an exceptionally straight part.\u003c\/p\u003e\u003cp\u003eLesser 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.\u003c\/p\u003e\u003cp\u003eManufactured to such exacting tolerances, ARP studs allow gaskets and cylinder heads to glide into position and align perfectly, which does not happen with inferior quality head studs.\u003c\/p\u003e\u003cp\u003eAfter heat-treat, ARP studs are thread rolled, giving them about 1000% (ten times) better fatigue strength than those threaded prior to heat-treat.\u003c\/p\u003e\u003cp\u003eARP also offers specially undercut studs for several engines.\u003c\/p\u003e\u003cp\u003eThis procedure, done only to the shorter studs, equalizes the 'stretch' of both studs, resulting in a more consistent clamping force that compensates for head gasket compression when the head is installed.\u003c\/p\u003e\u003cp\u003eThis helps prevent blown head gaskets and assures optimum sealing.\u003c\/p\u003e","brand":"ARP Inc.","offers":[{"title":"Default Title","offer_id":51709147087130,"sku":"ARP202-4301","price":190.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/71Pz5S4BBUL.jpg?v=1771335568","url":"https:\/\/trybeepbeep.com\/products\/head-stud-kit-arp-202-4301","provider":"TryBeepbeep","version":"1.0","type":"link"}