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On a turbocharged engine, building boost fast is the name of the game. However, making too much boost can lead to disaster. That’s where the wastegate comes in to save...
On a turbocharged engine, building boost fast is the name of the game. However, making too much boost can lead to disaster. That’s where the wastegate comes in to save the day!
Inside of a wastegate is a spring pressing against a diaphragm. Once the pressure of the air leaving the compressor exceeds the pressure of the spring, it moves the diaphragm, which is linked to a bypass valve before the exhaust turbine. The bypass opens, and some of the exhaust gas pressure is released into the exhaust (or, on some race vehicles, the atmosphere), mitigating boost.
An internal wastegate actuates a bypass valve located inside the...
On a turbocharged engine, building boost fast is the name of the game. However, making too much boost can lead to disaster. That’s where the wastegate comes in to save the day!
Inside of a wastegate is a spring pressing against a diaphragm. Once the pressure of the air leaving the compressor exceeds the pressure of the spring, it moves the diaphragm, which is linked to a bypass valve before the exhaust turbine. The bypass opens, and some of the exhaust gas pressure is released into the exhaust (or, on some race vehicles, the atmosphere), mitigating boost.
An internal wastegate actuates a bypass valve located inside the turbocharger itself, while an external wastegate operates a bypass valve separate from the turbocharger. An internal wastegate system is more compact and requires less plumbing (most OE turbochargers use an internal wastegate), but is limited by the housing of the turbocharger. Most high performance and racing vehicles use an external wastegate system for its greater versatility.
When it comes to protecting your turbocharger and engine, you want a wastegate from a trusted manufacturer. That why Summit Racing Equipment only partners with proven brands like STS Turbo, Precision Turbo & Engine, Turbosmart, and VS Racing.
Performance Wastegate, 50mm Diaphragm style, Cast Stainless Steel Base, Black Anodized Aluminum Top Cap, 6.2 and 4.6 psi springs installed.
Part Number: SUM-260074
Estimated Ship Date: Monday 4/28/2025
Estimated Ship Date: Monday 4/28/2025
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PerformanceWastegate, 60mm Piston style, Cast Stainless Base, Black Anodized Aluminum Top Cap, 6.2 and 4.6 psi springs installed.
Part Number: SUM-260073
Estimated Ship Date: Monday 4/28/2025
Estimated Ship Date: Monday 4/28/2025
Wastegate, GEN2, PW46, Mechanical, 46mm Diameter, Cast Stainless Steel Body, Aluminum Top Cap, Each
Part Number: PTU-PBO085-2001
Not Yet Reviewed
Estimated Ship Date: Monday 4/28/2025
Estimated Ship Date: Monday 4/28/2025
Wastegate, 44mm, Mechanical, External, Stainless Steel Flange, Natural, Black, Each
Part Number: VSG-VSR44WGD
Estimated Ship Date: Monday 4/28/2025
Estimated Ship Date: Monday 4/28/2025
Wastegate, Mechanical, 44mm Diaphragm type, Stainless Base, Black Anodized Aluminum Top Cap, Each
Part Number: SUM-260072
Estimated Ship Date: May 28, 2025 if ordered today
Estimated Ship Date: May 28, 2025 if ordered today
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Wastegate, Gen-V Hyper-Gate, 45mm, Mechanical, External, Aluminum Top, Black Anodized, 7 psi, Each
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Summit Racing™ 60mm Wastegate SUM-260073
