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Definition

Blow-off Valve -- a pressure relief valve used in the air intake piping of turbocharged engines between the turbocharger and the throttle body. When a turbocharged engine is generating full boost and the thottle is quickly released (such as when the driver shifts gears), the thottle is closed, and a slug of high pressure air will slam into the throttle plate causing a hihg pressure spike. This can damage the throttle body or other parts, or can cause parts to disconnect. The blow-off valve provides a path for the excess pressure to be released.

Glossary of Terms

Below is a list of automotive and road racing terms. Click on any of the letters to go to the start of that section, click on the term to open a window with the definition.

Terms J - R

J K L M N O P Q R

J

terms coming soon

K

terms coming soon

L

loose (handling)

M

terms coming soon

N

terms coming soon

O

oversteer

P

psi and psig
push (handling)

Q

terms coming soon

R

reference points

Terms S - Z

S T U V W X Y Z

S

terms coming soon

T

tactile feedback
tight (handling)
trail braking
toe
turn-in point

U

understeer

V

terms coming soon

W

terms coming soon

X

terms coming soon

Y

terms coming soon

Z

terms coming soon

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