{"product_id":"integrated-engineering-holdstrong-head-studs-audi-vw-2-0-tfsi-tsi-ea888-iehsvn1","title":"Integrated Engineering HoldStrong Head Studs","description":"\u003cp\u003e\u003cstrong\u003eKEEP IT TOGETHER\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMeet your ultimate defense against head lift. iE HoldStrong Head Studs are engineered and manufactured for structural integrity to go toe-to-toe with the demands of high-output engines. They’re made to keep your engine together and sealed tight using a rolled-thread process, chromium-based H11 tool steel and aircraft grade J-threads for maximum strength.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCHROMIUM H11 TOOL-STEEL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt’s not rocket science, but it’s close. Our chromium-based H11 tool steel alloy is known for its use in aerospace industry applications like helicopter blades and landing gear. H11 is widely used for its crack-resistant properties to prevent thermal fatigue or thermal shock. This alloy’s low-carbon content gives it strength with minimal distortion when tooling. If it’s good enough to land a plane, it’s the right choice for your high-performance engine.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIT'S ALL IN THE THREADS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eiE head studs are manufactured using a rolled method in a pure oil solution. The alloy material is shaped rather than removed (cut) which creates a compressive force that strengthens the thread and eliminates imperfections that could cause stress cracks. Rolled threads are built for strength and extreme fatigue resistance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eiE ROLLED THREADS\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrecise surface finish\n\u003cul\u003e\n\u003cli\u003eRoll forming the threads in a contained die produces an incredibly smooth thread surface that greatly reduces the chances of stress cracks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompressed material\n\u003cul\u003e\n\u003cli\u003eInstead of removing material, the alloy is compressed to form the threads which greatly increases strength and fatigue resistance. To maintain the structural integrity of the material during this process, heat caused by friction is reduced using a cooling oil.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccurate thread profile\n\u003cul\u003e\n\u003cli\u003eThe precise thread forming also produces a very consistent thread profile and dimensional accuracy, which delivers greater thread engagement and improves the overall performance of the fastener.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTRADITIONAL CUT THREADS\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSurface imperfections\n\u003cul\u003e\n\u003cli\u003eThe thread surface of a machined (cut) fastener is at risk to surface chatter and burrs. These small imperfections can cause stress concentrations and thread failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemoved material\n\u003cul\u003e\n\u003cli\u003eForming the threads by cutting material away removes and weakens the alloy. Less material means lower strength and fatigue resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnstable thread profile\n\u003cul\u003e\n\u003cli\u003eWhile faster and cheaper to produce, cut threads can not maintain a truly consistent thread profile, making them less than ideal for critical clamping loads required for performance builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eNOT ALL THREADS ARE EQUAL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sharp edges and corners of standard cut thread can cause stress points that lead to bolt failure. To prevent this, iE head studs have been engineered with J-threads. This higher quality thread profile has a curved minor-diameter structure to reduce stress points and prevent breakage from vibration. J-threads also provide a more accurate sizing for an exact dimensional fit.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWHAT IS HEAD LIFT?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe VW and Audi MQB Gen 3 EA888 engine is an incredibly popular platform for power hungry enthusiasts. With many builders pushing into bigger turbos, race fuels, and big boost it's not uncommon to see these engines pushing 500+HP. These massive gains result in higher cylinder pressures that put a lot of stress on the factory head bolts. When the factory bolts hit their limit, they stretch and cause head lift. This breaks the cylinder head gasket seal which results in compression loss, oil\/coolant contamination, loss of power, and in extreme conditions; catastrophic engine failure.\u003c\/p\u003e","brand":"Integrated Engineering","offers":[{"title":"Default Title","offer_id":51103479464239,"sku":"IEHSVN1","price":719.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/IEHSVN1_01_720x_4fc4b6c3-6ab9-44ea-a6ef-1974fad7fe27.webp?v=1741909953","url":"https:\/\/www.prospeedracing.com.au\/products\/integrated-engineering-holdstrong-head-studs-audi-vw-2-0-tfsi-tsi-ea888-iehsvn1","provider":"Pro Speed Racing","version":"1.0","type":"link"}