Precision Turbo & Engine |
616A South Main Street P.O. Box 425 46341-0425 |
Phone (219) 996-7832 |
Fax (219) 996-7749 Web: www.precisionturbo.net |
Thank you for purchasing our PW46 external wastegate. With over 60 years of combined turbocharger development and racing experience, we at Precision Turbo take great pride in providing you with the best external wastegate on the market today. The PW46 is made from high grade, high temperature stainless steel and billet aluminum components. It features our own purpose designed Kevlar reinforced wastegate diaphragm and a 347 stainless investment cast valve body. Our investment cast valve body has a smooth internal surface, giving you better flow and more accurate boost control. Our PW46 was designed to be a direct replacement for other existing 44mm wastegate flanges, but will work best with the flange provided. The PW46 features a Nickel Chromium Alloy valve and 5 different 17-7 precipitation hardened springs. Also included are stainless steel inlet and outlet flanges with clamps. With a satin black anodized, 6061 aluminum billet wastegate cap you will have years of good looks and protection from the elements. The PW46 is generally compatible with most aftermarket manual and electronic boost controllers on the market today. If you have any questions or need any technical support, our experienced Sales Staff are here to help.
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PART NUMBER: |
PBO085-2000 |
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NAME: |
PW46 |
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DESCRIPTION: |
46MM EXTERNAL WASTEGATE |
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Contents
Please verify that the following parts are included in the box.
PART NUMBER |
QTY |
DESCRIPTION |
WG002 |
1 |
External wastegate assembly |
WG002-104 |
1 |
Small natural 1.5 psi wastegate spring |
WG002-103 |
1 |
Medium yellow 3 psi wastegate spring |
WG002-102 |
1 |
Medium red 6 psi wastegate spring |
WG002-101 |
1 |
Large green 9 psi wastegate spring |
WG002-100 |
1 |
Large blue 18 psi wastegate spring |
WG002-052 |
2 |
Banjo barb fitting assemblies |
WG002-026 |
1 |
Pressure port cap |
WG002-019 |
1 |
Seal washer |
WG002-010 |
1 |
Valve seat |
WG002-011 |
1 |
304 Stainless steel inlet flange |
WG002-050 |
1 |
Inlet clamp assembly |
WG002-012 |
1 |
304 Stainless steel outlet flange |
WG002-051 |
1 |
Outlet clamp assembly |
PW46-MAN |
1 |
Instruction manual |
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PART NUMBER: |
PBO085-2000 |
NAME: |
PW46 |
DESCRIPTION: |
46MM EXTERNAL WASTEGATE |
Operational overview
Your PW46 wastegate, controls turbocharger boost by bypassing turbine inlet exhaust gas via a spring loaded valve diaphragm assembly. Spring rate, in conjunction with boost pressure signal, and back pressure, control the opening point of the wastegate valve. Once the spring rate has been over come, the valve will open. This causes exhaust flow to be diverted away from the turbine side of the turbocharger, effectively slowing and/or stabilizing the turbine wheels’ speed. This stabilization results in a smooth and steady boost pressure level, created by the compressor wheel of the turbocharger. Open pressure of the valve can be controlled via spring rate and or a boost controller, such as a manual boost controller or an electronic boost controller.
See diagram below.
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