HKS 60mm GT Wastegate #20372
This super rare HKS GT gate is massive. It's brand new and is polished. This is your chance to own a piece of history.
AS-IS , No Warranty.
HKS external wastegates are race proven units that offer unsurpassed craftsmanship, reliability and functionality for a diverse range of applications. Each HKS wastegate is constructed with a stainless steel valve, a die-cast mount base and valve seat, a fully sealed shaft and a high temperature resistant diaphragm. Available in three different types, Standard, Racing, and GT, HKS has the appropriate wastegate for every application and performance level. The Standard Wastegate utilizes a 40mm valve and is rated to applications producing upwards of 500 horsepower. The Racing Wastegate utilizes a 50mm valve and supports up to 1000 horsepower. The GT Wastegate is the largest of the series and utilizes a 60mm valve to support applications producing well over 1000 horsepower. Each wastegate type offers several different spring rates for various boost pressure levels. Also available are universal base flanges, flexible outlet tubes, barb fittings and gaskets for custom applications.
To better understand the benefits of the HKS external wastegates, a simplified understanding of the operations of a wastegate is needed. To build boost pressure, the wastegate diaphragm/valve remains closed in order to direct all exhaust energy to the turbine. To maintain a given boost pressure, the wastegate (positioned upstream of the turbo) reroutes excess exhaust energy around the turbine wheel by opening its diaphragm/valve. As greater exhaust output is created from higher levels of engine performance, the stock internal wastegate actuators begin to lose their effectiveness because the amount of exhaust flow to be bypassed is now beyond their intended operating range. As the result of exhaust flow being greater than the valves’ capacity to discharge, more exhaust flow is directed to the turbine and additional boost is created, which is commonly referred to as boost creep. Boost spikes may also occur due to the larger volume of exhaust energy now being created.
The GT Wastegate is the highest flowing of the HKS Wastegates. Its 60mm diameter valve is design to accommodate high output applications producing from 600 horsepower to well beyond 1000 horsepower. The adjustable rate GT wastegate spring is specifically engineered to provide ample resistance to the extreme exhaust pressure developed by these high output applications. The enhanced diaphragm and spring design being provides stable consistent boost levels by preventing the valve from over opening and releasing exhaust energy. Despite its complex structure, the GT Wastegate is a very compact unit that utilizes a V-band inlet and outlet structure that provides extremely smooth flow characteristics and better sealing at high temperatures. The use of V-band clamps also offers extremely versatile mounting and adjustment options for custom applications.
PART # 1405-RA025