TiAL Sport MV-S 38mm External Wastegate – All Springs & Colors

OVERVIEW

The MV-S is TiAL Sport's 38 mm external wastegate, a far more compact successor to the F38 that stands only 3.7 in tall. Its V-flanged inlet and outlet give much more freedom when fabricating a hot side, and TiAL rates it as the highest-flowing 38/40 mm wastegate on the market. Integrated −4AN water-cooling ports cycle a small amount of coolant through the actuator to keep diaphragm temperatures down in extreme conditions.

Every gate ships as a complete assembly with valve seat, air and coolant fittings, inlet and outlet flanges and clamps. Choose a single spring rate or the All Spring set, which includes the full spring range so boost can be set on the bench.

SPECS

• Valve size: 38 mm
• Mass flow: 34 lb/min
• Control range: 0.3–1.7 bar
• Height: 3.7 in
• V-band inlet and outlet; mating weld flanges are 304L stainless
• High-temperature alloy valve and stainless steel valve housing, valve seat and bushing
• High-temperature silicone-reinforced diaphragm; stainless steel spring
• Integrated −4AN water-cooling ports
• 3 lower and 2 upper air ports, so the actuator top never needs rotating; plugs supplied for unused ports
• Clamp style: new band clamp set or V-clamp set
• Colors: Silver, Blue, Black, Purple, Red; position-sensor version in Black only

PARTS INCLUDED

• MV-S wastegate assembly
• Valve seat
• Inlet V-band clamp and flange; outlet V-band clamp and flange
• CNC-machined air and coolant fittings
• Plugs for unused air ports
• Spring or springs per the option selected

TECH RESOURCES

Additional Parts Required

• Exhaust fabrication. The supplied flanges must be welded into the manifold or hot side. Spare flanges and clamps: TiAL Sport MV-S / MV-R Wastegate Flanges & V-Band Clamps.
• Coolant plumbing to the −4AN ports. If routing coolant is impractical, the air-cooled TiAL Sport MV-SA 38mm Air-Cooled External Wastegate is the alternative.
• A boost control source — manual controller, electronic solenoid or ECU-driven.

Installation

• TiAL Sport MV-S product drawing (PDF)
• TiAL Sport MV-S spring selection guide (PDF)
• TiAL Sport wastegate routing and plumbing guide (PDF)
• TiAL Sport wastegate static bench-testing instructions (PDF)
• TiAL Sport wastegate FAQ (PDF)

Notes

• The MV-S valve seat is NOT interchangeable with the F38 seat.
• Universal part: fits any turbocharged application with a hot side built for a 38 mm V-band wastegate.
• MV-Series gates are custom-built; TiAL notes assembly can take up to two weeks.
• Competition / off-road use only. Price is for parts only; labor and fabrication are not included.

PART NUMBER

• 003889 — MV-S 38mm, 0.5 bar, Silver
• 003841 — MV-S 38mm, 0.5 bar, Blue
• 003888 — MV-S 38mm, 0.5 bar, Black
• 005777 — MV-S 38mm, 0.5 bar, Purple
• 003422 — MV-S 38mm, 0.5 bar, Red
• 003868 — MV-S 38mm, 1.0 bar, Silver
• 003828 — MV-S 38mm, 1.0 bar, Blue
• 003046 — MV-S 38mm, 1.0 bar, Black
• 004327 — MV-S 38mm, 1.0 bar, Purple
• 003512 — MV-S 38mm, 1.0 bar, Red
• 001931 — MV-S 38mm, All Spring set, Silver
• 002952 — MV-S 38mm, All Spring set, Blue
• 002953 — MV-S 38mm, All Spring set, Black
• 002954 — MV-S 38mm, All Spring set, Purple
• 002955 — MV-S 38mm, All Spring set, Red
• 007255 — MV-S 38mm with position sensor, Black
• 006171 — MV-S position sensor retrofit kit

VEHICLE APPLICATIONS