It’s no secret that turbocharging an engine can produce big horsepower gains. But a turbocharger system is more than just slapping on the biggest turbo you can find and watching the boost and horsepower rise. That’s why Summit Racing created its own line of top-quality turbochargers, wastegates, blow-off valves, and other components to help you build a reliable system for street, mild race, or full-bore race applications.
Summit Racing™ Performance Turbochargers
Our turbochargers have the latest in compressor aero technology. With 10 turbos to choose from, you’ll be able to find the right one for your particular build. This Summit Racing tech video gets into more detail on sizes and specifications for the Summit Racing Performance Turbochargers.
The 2600 Series Performance Turbochargers are robust enough to handle serious horsepower. They spool quickly for excellent performance on the street or off the line.
• GTX3582R, 66mm billet compressor/62mm turbine, .82 A/R ratio, T4 turbine inlet/outlet
• S475, 75mm cast compressor/96mm turbine, 1.32 A/R ratio, T6 turbine inlet/outlet
• S400 7875, 78mm billet compressor/83mm turbine, 1.25 A/R ratio, T4 turbine inlet/outlet
• G42-1450R, 79mm billet compressor/75mm turbine, 1.15 A/R ratio, T4 turbine inlet/outlet
The 2700 Series Race Turbochargers are designed, balanced, and precision assembled in North America. They feature 3-D milled 2618 billet forged compressor wheels for superior flow and dependability at high boost levels.
• S476, 76mm compressor/82mm turbine, 1.12 A/R ratio, T4 turbine inlet/outlet
• S476, 76mm compressor/88mm turbine, 1.32 A/R ratio, T6 turbine inlet/outlet
• S476, 76mm compressor/88mm turbine, 1.30 A/R ratio, V-band/T6 turbine inlet/outlet
• S479, 79mm compressor/82mm turbine, 1.10 A/R ratio, T4 turbine inlet/outlet
• S479, 79mm compressor/88mm turbine, 1.32 A/R ratio, T6 turbine inlet/outlet
• S479, 79mm compressor/88mm turbine, 1.30 A/R ratio, V-band/T6 turbine inlet/outlet
• S488 V2, 88mm compressor/88mm turbine, 1.30 A/R ratio, V-band/T6 turbine inlet/outlet
• S488 V2, 88mm compressor/88mm turbine, 1.32 A/R ratio, T6 turbine inlet/outlet
• S488 V2, 88mm compressor/92mm turbine, 1.32 A/R ratio, T6 turbine inlet/outlet
Summit Racing™ Mechanical Wastegates
These diaphragm-style wastegates have a cast stainless steel base and a 6061 aluminum top cap for durability and corrosion resistance, which is vital given the wastegate’s proximity to exhaust gasses and intense heat cycling. The 44mm wastegate comes with swappable 7mm PSI and 14 PSI springs. The 50mm wastegate has the same size springs and has a 12 PSI spring already installed.
Summit Racing™ Pro Mechanical Wastegates
Our Pro Wastegates have the same cast stainless steel and aluminum construction as the standard wastegates, but have a two-piece piston with a 150 PSI of dome pressure. They come with 5 PSI, 7 PSI, and 14 PSI springs that can be stacked for high-boost systems. They are available in 45mm and 60mm exhaust flange sizes.
Summit Racing™ 50MM Blow-Off Valves
These Blow-Off Valves take the load off your turbocharger when the throttle is suddenly closed, preventing damage to both the turbo and your engine. The machined aluminum valves are adjustable from 0 to 50 PSI.
The Performance Blow-Off Valve comes with 10 to 14 inHg and 18 to 22 inHg springs, vacuum fittings, an aluminum weld flange, and a V-band assembly.
The Pro Blow-Off Valve has a two-piece billet aluminum dome, 1/8 inch NPT upper boost reference ports, and a 1/16 inch bottom boost reference port. It also has extra-thick weld-on flanges to prevent warpage. The Pro Blow-Off Valve comes with 4 inHg, 6 inHg, and 10 inHg springs and a V-band assembly.
Summit Racing™ Turbo Hot Side Fabrication Kits
Our Turbo Hot Side Fabrication Kits take some of the effort out of building the hot side of the system from the header or manifold outlet to the turbine inlet flange. The universal-fit kits come with 2.5 inch stainless steel tubing bends, flange(s), bung, and fitting. They’re available for single T4 and T6 turbos and dual T4 turbos.
We also have these Summit Racing turbocharger components to help you finish your system: