SKU: MTQ-TbSmart-C1811-AG155

Turbosmart 1/16" Npt -6mm Barb Fitting TS-0505-3009 Premium Quality

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Content : Turbosmart 1/16" Npt -6mm Barb Fitting

Part No :TS-0505-3009

  • Wastegate choice is dependent on how much, and how quickly exhaust needs to be flowed away from the turbocharger to adequately control boost pressure - while being careful not to flow too much away, slowing boost response.
  • To determine the size of the wastegate you need, you must first look at engine size and target power. This will allow you to calculate the mass airflow required to produce your target power.This information is used to select the right turbocharger.
  • Once you know how much mass flow the engine puts out and how much mass flow the turbine requires, you'll then be able to determine how much mass flow the wastegate needs to bypass to keep the turbine running in its optimum range.
  • As you can see, this throws up an infinite number of variables related to wastegate sizing.
  • All applications differ slightly, so it is best to speak with an experienced engine builder or tuner for advice on what's been tried and tested.
  • If you are tossing up between two wastegate sizes, it's always better to go larger as this gives you more ability to control boost with future modifications and it will give the wastegate better heat handling capabilities.
The mounting position of your wastegate is largely determined by your turbo and manifold setup and may be constrained by space restrictions in your engine bay.
The following points should be considered when mounting your wastegate:
  • The weld flanges should be welded to your exhaust system.
  • The weld flanges should be compatible with Stainless Steel and Mild steel welding rod material.
  • Secure the wastegate to the weld flanges with the supplied V-Band clamps. Do not forgetto put the valve seat into the body before mounting the unit on the exhaust manifold. Tighten the supplied M6 screws to a torque value of 14 Nm (10 ft/lbs)
  • For best results an attempt should be made, if space allows, to mount your wastegate at an a shallow angle in line with exhaust flow. See the schematic diagrams above for examples of mounting positions.
  • Wastegates should be mounted within adequate airflow to provide cooling.


With so many contradicting opinions and recommendations, it's a little wonder choosing the right Wastegate for your application can be a confusing. We try to dispel some myths and shed some light on the most common misconceptions regarding wastegates.
This is one of the more popular misconceptions. A wastegate is possibly the only component in your whole engine package that can actually be made smaller as you increase your boost/ horsepower output. Use this simple guide:
Big Turbo/Low Boost = Bigger Wastegate
Big Turbo/High Boost = Smaller Wastegate
Small Turbo/High Boost = Smaller Wastegate
Small Turbo/Low Boost = Bigger Wastegate
Contrary to the popular belief, external wastegates are usually mounted at the hottest part of the exhaust. It's the place where all the exhaust gases meet, creating extra heat.
This, combined with the late combustion of unburnt fuel (due to rich mixtures, retarded timing and high octane fuels) significantly raises the exhaust temperature.
While the valve diameter is without a doubt an important part of the flow rate, equally important, but often misunderstood, is the importance of the flow path.
When comparing wastegates with similar valve size, it is important to have a balanced
body/valve/spring combination that is designed to work together to allow for maximum boost control. All Turbosmart wastegates are designed with this in mind.

Turbosmart is a world leading manufacturer in performance accessories for forced induction vehicles.Turbosmart engineers,builds and track tests all of the products in-house to make sure that they are continually producing the highest quality blowoff valves,wastegates,boost controllers,gauges,pressure regulators,and hoses for both the track and the street.Turbosmart is the concatenation of two words that symbolizes what we want to achieve as a brand;to make turbo control smarter.We believe that every product that we produce creates a new level of efficient boost control for turbo vehicles,prolonging the life of turbocharged vehicles.


SKU MTQ-TbSmart-C1811-AG155


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