EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 94mm | 42/37.5mm SS Big Valves, Dual Spring (98-1439-B)

EMPI GTV-2 Dual Port Cylinder Head — 94mm Bore, 42/37.5mm SS Big Valves, Dual Spring (98-1439-B)

When you need the most valve and flow EMPI puts in a GTV-2 dual-port head, this is it. The 98-1439-B is the big-valve racing version — machined for 94mm pistons and built with massive 42mm intake / 37.5mm exhaust stainless Manley valves on dual hi-rev springs.

The oversized valves need the dual-spring valvetrain to keep up with high-lift cams. Sold each.

Vehicle Fitment

• VW Beetle: dual-port engine, 94mm bore
• VW Bus: dual-port engine
• VW Karmann Ghia: dual-port engine

Confirmed: 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). Not confirmed: stock 85.5mm or 90.5/92mm bore, single-port engines, Type 4 engines.

Why Choose EMPI?

This big-valve GTV-2 head is the top of its dual-port range.

Key Features & Benefits

• 94mm bore, GTV-2 dual port casting.
• 42mm intake / 37.5mm exhaust stainless Manley valves (3-groove).
• Dual hi-rev valve springs.
• Chromoly retainers and hardened keepers.
• Bronze valve guides.
• 57cc combustion chamber.
• Ports 20% larger than stock.
• 12mm 3/4" reach spark plug holes.
• Rocker, exhaust, and intake studs included.
• Competition 3-angle valve job.
• Sold each.

Technical Specifications

• Valves: 42mm intake / 37.5mm exhaust, stainless Manley
• Springs: dual hi-rev
• Combustion Chamber: 57cc
• Material: special aluminum alloy
• Spark plugs: 12mm 3/4" reach
• Part Number: 98-1439-B | UPC: 707924461909
• Sold as: each

Frequently Asked Questions

• How big are the valves? 42mm intake, 37.5mm exhaust — the largest in the GTV-2 dual-port range.
• Why dual springs? The big valves and high-lift cams need the dual-spring valvetrain to control valve motion at high RPM.
• What bore are these for? 94mm pistons (1914-2332cc).
• Do I need lash caps? Yes — required with stainless valves, sold separately (00-4006-0).
• What's the part number? EMPI 98-1439-B (UPC 707924461909).
• Are you an authorized dealer? Yes.

Installation

Lash 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.

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Prop 65 Warning

WARNING: 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.