{"title":"TMZPerformance","description":null,"products":[{"product_id":"dsm-center-differential-4-spider-hardened-chromoly-cross-shaft","title":"DSM Center Differential 4-Spider Hardened Chromoly Cross-Shaft - W5M33","description":"\u003cdiv class=\"span_7 col col_last single-product-summary\"\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"panel entry-content\" id=\"tab-description\"\u003e\n\u003cp\u003eThis custom cross-shaft is designed by Beyond Redline Performance and is used in our Heavy Duty 4-spider center differential upgrade for the DSM AWD 5-speed transmission.  We have been using this cross shaft in all 4-spider center differential builds for the DSM since 2009 with excellent results.  \u003c\/p\u003e\n\u003cp\u003eIt is forged 4340 chromoly tool steel that is machined from an ingot by a 5-Axis CNC Mill, then oil-grooved, shot-peened, heat-treated and carbonized. Rockwell hardness is around 60-62. That results in an approximate tensile strength around 115,000-120,000psi. It is essentially classified as a hardened tool steel part.\u003c\/p\u003e\n\u003cp\u003eIt is by far the strongest cross-shaft on the market for these vehicle applications and provides owners with complete streetability on high-horsepower AWD applications.  Instead of machining down the stock cross-shaft to accept 4 spider gears, this part started from scratch with better material, a beefier structure, surface hardening, and oil passage grooves on its posts to provide proper oiling to the spider gears to prevent surface galling.\u003c\/p\u003e\n\u003cp\u003eThe Beyond Redline Performance cross-shaft has been proven to hold over 1000HP and 950TQ at the crank on my race car for the last 8 years without signs of galling or damage.  It has been proven on the race track, the street, and the dyno to survive the harshest conditions without failure.\u003c\/p\u003e\n\u003cp\u003eWe are no longer doing 4 spider center differential machinework or assembly due to the shop fire loss, and losing all inventory of obsolete parts needed to build them.  The cross shaft is the only part available currently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TMZPerformance","offers":[{"title":"Default Title","offer_id":68071034224916,"sku":"DSM_4_spider_cross_shaft","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/3886\/4404\/files\/Cross-Shafts.jpg?v=1794512643"},{"product_id":"tmz-performance-dsm-evo-shouldered-dowels-for-cylinder-head-reinforcement-11mm-12mm-1-2","title":"TMZ Performance DSM\/Evo Shouldered Dowels For Cylinder Head Reinforcement (11mm, 12mm, 1\/2″)","description":"\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e TMZ-4G63-Head-Dowel-(size)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 Dowels Per Set\u003c\/p\u003e\n\u003cp\u003e(Head Studs and Head Gaskets Sold Seperately)\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003e\u003cstrong\u003e*Note:\u003c\/strong\u003e\u003c\/span\u003e With Evo 4-9 cylinder heads, select the “EVO” version that has 1x short dowel that is placed in the rear #4 oiling port side so it does not block the oiling passageway in the cylinder head.  This set has 9x long dowels, and 1x short dowel.  The “DSM” version has 10x long dowels in the set and is made for cylinder heads that have the oil passageway below the dowel location.\u003c\/h3\u003e\n\u003cp\u003eThese are specially machined 4340 Pre-Hard Chromoly Alloy Steel shouldered dowels that are designed to be inserted into the cylinder head at the head stud locations to reinforce the cylinder head casting and prevent crushing of the casting under high boost pressure applications.  The inserts sit below the head stud washer, and allows the torque applied to the head stud to be properly distributed into the cylinder head casting.  It also will reduce the issue of elongating the head stud holes from using a 7-bolt DSM motor with 6-bolt DSM cylinder head and 11mm studs.  With the larger 1\/2″ inserts installed you can use the potential of the stud without worries of crushing your cylinder head casting.\u003c\/p\u003e\n\u003cp\u003eThe cylinder head bosses must be spot faced and then the head stud holes are bored with an SAE-sized tool to fit the OD listed below, then the dowels are press-fit \/ tap-fit installed.  With 1\/2″ head studs, the engine block and cylinder head both get machined, and the 4G63 7-bolt blocks can be tapped to 1\/2″ without any issues.  The 6-bolt applications require (10) 1\/2″ “Time-Serts” to be installed into the block by the machinist.\u003c\/p\u003e\n\u003cp\u003e11mm uses a 0.625″ OD on the dowel.  Uses 11mm head studs.  Uses 5\/8″ boring tool.\u003cbr\u003e12mm uses a 0.656″ OD on the dowel.  Uses 12mm head studs.  Uses 21\/32″ boring tool.\u003cbr\u003e1\/2″ uses a 0.6875″ OD on the dowel.  Uses 1\/2″ head studs.  Uses 11\/16″ boring tool.\u003cbr\u003eThe shoulder OD is 0.940″ on all versions.\u003c\/p\u003e\n\u003cp\u003eThese are also great repair parts for cylinder heads that have seen elongation or crush on the seats that is repairable so you don’t have to toss your cylinder head in the garbage if this scenario happens; a likely one when you are running a high boost application.\u003c\/p\u003e","brand":"TMZPerformance","offers":[{"title":"11mm Head Studs \/ DSM \/ Evo 1-3 \/ GVR4","offer_id":68079151415572,"sku":"TMZ-DSM-Head-Dowel-11mm","price":165.0,"currency_code":"USD","in_stock":false},{"title":"11mm Head Studs \/ Evo 4-9","offer_id":68079151448340,"sku":"TMZ-EVO-Head-Dowel-11mm","price":165.0,"currency_code":"USD","in_stock":false},{"title":"12mm Head Studs \/ DSM \/ Evo 1-3 \/ GVR4","offer_id":68079151481108,"sku":"TMZ-DSM-Head-Dowel-12mm","price":165.0,"currency_code":"USD","in_stock":false},{"title":"1\/2\" Head Studs \/ DSM \/ Evo 1-3 \/ GVR4","offer_id":68079151513876,"sku":"TMZ-DSM-Head-Dowel-Half-Inch","price":165.0,"currency_code":"USD","in_stock":false},{"title":"1\/2\" Head Studs \/ Evo 4-9","offer_id":68079151546644,"sku":"TMZ-EVO-Head-Dowel-Half-Inch","price":165.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/3886\/4404\/files\/11mmheaddowels300x300.jpg?v=1794545064"}],"url":"https:\/\/tmzperformance.myshopify.com\/collections\/tmzperformance.oembed","provider":"TMZPerformance","version":"1.0","type":"link"}