{"product_id":"h13-tool-steel-head-stud-kit-street-series-gr-yaris","title":"H13 Tool Steel Head Stud Kit - Lamspeed Street Series - GR Yaris G16E-GTS","description":"\u003cp\u003e\u003cstrong\u003eLamspeed Cylinder Head Stud Kit - H13 Tool Steel - For the GR Yaris G16E-GTS Engine\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eFor applications where you have turned the boost right up over 30psi and plan to keep the head from lifting. This is the first thing that occurs from testing when pushing the limits when Lamspeed set the World Drag Record in a GR Yaris running a 10.5 @ 131mph to then setting the GR Yaris record around Sydney Motorsport Park at the 2022 World Time Attack Challenge with a 1.36.8\u003cbr\u003e\u003cbr\u003eLamspeed are the first to develop and put into production an aftermarket head stud solution by taking their own measurements to ensure the studs are of the correct length so that they bottom out on the block, the factory bolts do not. \u003cbr\u003e\u003cbr\u003eThese H13 tool steel head studs are manufactured specifically for Lamspeed and are much stronger than the typical 8740 chromoly.\u003cbr\u003e\u003cbr\u003eConventional washers are only 23-24mm OD, whereas our new oversize washers are designed to encompass the entire head bolt boss. CNC machined from 4140 chrome moly bar stock, hardened to HRC 45 and blackened for appearance.\u003cbr\u003e\u003cbr\u003eWith the Street Series they have not included the hex broach to reduce cost and will suit majority of the market. This means you will need to either thread them in by hand or double nut them to thread them into the block.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhat makes Lamspeed's head studs better than the competition?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe dogpoint feature seats the stud in the block and preloads the fastener for a more accurate and repeatable torque sequence. We also include the ARP ultra torque assembly lube with each set. When it comes to head stud performance properly torqueing the studs is paramount and we have made every effort to ensure torque precision and repeatability.\u003c\/li\u003e\n\u003cli\u003eDirect OEM replacement, no modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is H13 Tool Steel?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25% more clamping force than typical ARP 8740 head studs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eH13 is a \u003c\/span\u003e\u003cb\u003eHot work tool steel with 5% chromium\u003c\/b\u003e\u003cspan\u003e. Its high impact strength protects against cracking and is easy to machine. This steel is designed to retain hardness at elevated temperatures and withstand the effects of alternate heating cooling.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThis material type will suit most customers looking for extra reliability on builds up to around 600bhp\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTorque Settings\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv dir=\"auto\"\u003e\n\u003cul\u003e\n\u003cli\u003e Use 30W engine oil on the end of the stud that threads into the block and wind them in finger tight until the stud bottoms out in the hole.   \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"auto\"\u003e\n\u003cul\u003e\n\u003cli\u003eUse the moly grease provided on the nut, washer face and threads on the other end of the stud.   \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"auto\"\u003e\n\u003cul\u003e\n\u003cli\u003eM12 Initial Torque 100nm, final Torque 128nm   \u003c\/li\u003e\n\u003cli\u003eM11 Initial Torque 80nm, final Torque 108nm   \u003c\/li\u003e\n\u003cli\u003eRecheck the torque after 1 hour.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"auto\"\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Lamspeed","offers":[{"title":"Default Title","offer_id":39833190498417,"sku":"LSR-H13G16HS \/ 603650","price":495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/9099\/9409\/products\/LSR-H13G16HS-2.jpg?v=1657553087","url":"https:\/\/www.fensport.co.uk\/products\/h13-tool-steel-head-stud-kit-street-series-gr-yaris","provider":"Fensport Performance","version":"1.0","type":"link"}