Garrett GVW-40 Wastegate Kit 40mm

Garrett's 40mm external wastegate kit GVW-40 allows for venting of exhaust gas around the turbine and precise regulation of turbocharger shaft speed on racing turbochargers. The GVW wastegates (also available as GVW-45 and GVW-50) were a challenge to craft; that expectation of a simple design completely changed after the team spent a whole year perfecting it.

The GVW-40 wastegate has undergone extensive CFD testing for optimal flow, thermal efficiency, and durability. Constructed from high-temp stainless steel, the Garrett GVW-40 valve body is designed to withstand exhaust temperatures of up to 1050°C. It provides consistent performance no matter the temperature, offering a 5% increase in maximum flow over competitors for optimal turbocharger and engine output.

The GVW-40 is shipped at 1 bar (14.5 psi) and, with its included springs, can be configured to output from 0.2 bar (2.9 psi) to 1.7 bar (24.7 psi) base boost. Every single fastener, spring, fitting, V-band, clamp, and flange necessary for installation is included, so setup is effortless. Note: This is especially suited for twin-scroll dual wastegate applications.

TECHNOLOGY & FEATURES

• CFD tested for maximum flow and thermal efficiency
• Superb durability thanks to optimized actuation stability and unrivaled temperature resistance
• Bushing components are fully-replaceable, increasing service life
• Easy Nomex diaphragm replacement
• Anodized aluminum top cap with optional watercooled actuator port

MECHANICAL SPECS

• Valve diameter: 40mm
• Valve mass: 1.27kg | 45 oz
• Maximum spring base pressure: 1.7 bar | 25psi (1:1 backpressure ratio)
• Minimum spring base pressure: .02 bar | 3psi (1:1 backpressure ratio)
• Port fitting, air: M10x1.0 to hose barb (hose ID 6mm | .25in)
• Port fitting, liquid: M8x1.0 to AN-3

MATERIAL SPECS

• Valve housing: high-temp stainless steel rated up to 1050 degrees C
• Diaphragm: high-temp Nomex reinforced elastomer
• Actuator cover: fully-machined anodized 6061 aluminum
• Valve guide/bushing: Nitronic 60
• Valve: high-temp stainless steel with plated stem
• V-band: CNC machined 304 stainless steel
• Flanges: full-machined 304 stainless steel
• Springs: 17/7 PH stainless steel

THERMAL SPECS

• Maximum Exhaust Gas Temperature, peak: up to 1050 degrees C
• Maximum thermal stress (non-cooled): 270 degrees C actuator body temperature during thermal cycle testing
• Maximum thermal stress (watercooled): 130 degrees C body temp during thermal cycle testing
  

*Direct Replacement for these other wastegates: TiAl MVR, Turbosmart 45mm, Precision 46mm

GARRETT VENT | EXTERNAL WASTEGATES ARE OUTLINE AND FLANGE COMPATIBLE WITH, BUT IS DESIGNED TO OUTFLOW, OTHER GATES