Precision Turbo and Engine Precision Turbo & Engine PW39 Wastegate - Manual (Page 3)

PART NUMBER: PBO085-1000
NAME: PW39
DESCRIPTION: 39MM EXTERNAL WASTEGATE
Operational overview
Your PW39 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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