Talk:Dump valve

I'm unsure the definition between a Dump valve and a blowoff valve is accurate. Can anyone give any more info? A lot of what was written there seems shakey. TiHead 22:30, 16 April 2006 (UTC)

I believe the ricers who wrote these articles have got their definitions backwards.

Are dump valves only able to fit cars with turbos or can they fit standard cars as well? no they cant fit standard cars you need a turbo.

It sounds like blow off valves and dump valves are the same thing. Basically while you are at constant throttle, the turbo is providing a constant level of pressure above atmosphere. When you take your foot off the accelerator, the momentum of the spinning turbine maintains the pressure despite the throttle plate being closed. As a result you have compressed gas trapped between the turbine compressor and the throttle plates. To prevent surge (the compressed air forcing it's way out of the compressor in reverse), there is a relief valve that provides another option to the compressed gas.

-If it vents to atmosphere, it is a blowoff valve or dump valve. (IMHO)

-If it vents into the intake before the turbine compressor, it is a bypass valve. This provides the possibility of reusing some of the pressurized air to spool up the turbo faster if you stomp on the gas again immediately (as may happen after a sharp turn in racing).

Someone with knowledge please feel free to verify or counterpoint. If my assessment above is correct, I would recommend merging the articles on blow off valves and dump valves and creating a separate article for bypass valves.74.214.48.212 (talk) 01:42, 3 December 2010 (UTC)