{"product_id":"empi-gtv-2-dual-port-cylinder-head-94mm-42-37-5mm-ss-big-valves-dual-spring-part-98-1439-b","title":"EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 94mm | 42\/37.5mm SS Big Valves, Dual Spring (98-1439-B)","description":"\u003ch2\u003e\u003cb\u003eEMPI GTV-2 Dual Port Cylinder Head — 94mm Bore, 42\/37.5mm SS Big Valves, Dual Spring (98-1439-B)\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003eWhen you need the most valve and flow EMPI puts in a GTV-2 dual-port head, this is it. The \u003cb\u003e98-1439-B\u003c\/b\u003e is the big-valve racing version — machined for \u003cb\u003e94mm pistons\u003c\/b\u003e and built with massive \u003cb\u003e42mm intake \/ 37.5mm exhaust stainless Manley valves\u003c\/b\u003e on \u003cb\u003edual hi-rev springs\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eThe oversized valves need the dual-spring valvetrain to keep up with high-lift cams. \u003cb\u003eSold each.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVW Beetle:\u003c\/b\u003e dual-port engine, 94mm bore\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Bus:\u003c\/b\u003e dual-port engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Karmann Ghia:\u003c\/b\u003e dual-port engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eConfirmed:\u003c\/b\u003e VW Type 1 dual-port big-bore \/ racing builds running 94mm bore with high-lift, high-RPM cams — 1914cc, 2110cc, 2276cc, 2332cc (Beetle, Bus, Karmann Ghia, Type 3, Thing). \u003cb\u003eNot confirmed:\u003c\/b\u003e stock 85.5mm or 90.5\/92mm bore, single-port engines, Type 4 engines.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eWhy Choose EMPI?\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThis big-valve GTV-2 head is the top of its dual-port range.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003e94mm bore, GTV-2 dual port casting.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e42mm intake \/ 37.5mm exhaust stainless Manley valves (3-groove).\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eDual hi-rev valve springs.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eChromoly retainers and hardened keepers.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eBronze valve guides.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e57cc combustion chamber.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003ePorts 20% larger than stock.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e12mm 3\/4\" reach spark plug holes.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eRocker, exhaust, and intake studs included.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eCompetition 3-angle valve job.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eSold each.\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eValves:\u003c\/b\u003e 42mm intake \/ 37.5mm exhaust, stainless Manley\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSprings:\u003c\/b\u003e dual hi-rev\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCombustion Chamber:\u003c\/b\u003e 57cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e special aluminum alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSpark plugs:\u003c\/b\u003e 12mm 3\/4\" reach\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 98-1439-B | UPC: 707924461909\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSold as:\u003c\/b\u003e each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eHow big are the valves?\u003c\/b\u003e 42mm intake, 37.5mm exhaust — the largest in the GTV-2 dual-port range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhy dual springs?\u003c\/b\u003e The big valves and high-lift cams need the dual-spring valvetrain to control valve motion at high RPM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat bore are these for?\u003c\/b\u003e 94mm pistons (1914-2332cc).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDo I need lash caps?\u003c\/b\u003e Yes — required with stainless valves, sold separately (00-4006-0).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat's the part number?\u003c\/b\u003e EMPI 98-1439-B (UPC 707924461909).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAre you an authorized dealer?\u003c\/b\u003e Yes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eInstallation\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eLash caps (P\/N 00-4006-0) are required for all stainless steel valve applications — sold separately. 12mm long-reach spark plugs (e.g. NGK DCPR8E) must be used in place of stock Bosch plugs. Verify rocker arm geometry and check for coil bind with dual springs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cb\u003eExplore Related Categories\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/engine-parts\"\u003eEngine Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/all-vw-aircooled\"\u003eAll VW Air-Cooled\u003c\/a\u003e · \u003ca href=\"\/collections\/vw-beetle\"\u003eVW Beetle\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eProp 65 Warning\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eWARNING: This product can expose you to chemicals including lead which are known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. All parts legal for use on pre-pollution controlled vehicles only.\u003c\/p\u003e","brand":"EMPI","offers":[{"title":"Default Title","offer_id":44924458467443,"sku":"98-1439-B","price":641.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/98-1439-B-scaled.jpg?v=1778011837","url":"https:\/\/www.washburnsmetal.com\/products\/empi-gtv-2-dual-port-cylinder-head-94mm-42-37-5mm-ss-big-valves-dual-spring-part-98-1439-b","provider":"Washburn's Metal","version":"1.0","type":"link"}