Jellybean Posted January 21, 2009 Share Posted January 21, 2009 Waste Gate Spring -- My Understanding The Spring Keeps the waste gate closed due to X amount of tension in the Spring So if you have a Spring Rated @ 1 Bar, When the pressure builds beyond 1 bar this over comes the Springs tension and opens the waste gate to relief the excess pressure and this regulates the Pressure to 1 Bar Questions Add a Boost Controller into the equation -- You can use this to increase the Boost but if you Wastegate Spring Rate is @ 1BAR can you increase the boost beyond 1 BAR? This is my understanding How does it work will it not just keep venting until the volume of pressure vented superseeds the capacity of what the Wastegate can vent therefore when this happens you get you increased boost, Basically because the Wastegate cannot vent the pressure quick enough you get an increase in boost Link to comment Share on other sites More sharing options...
Wez Posted January 21, 2009 Share Posted January 21, 2009 Wastegate spring is your mechanical min pressure, this is why 0.8bar is a nice spring, the boost controller is then used to raise it above wastegate pressure. Link to comment Share on other sites More sharing options...
heckler Posted January 21, 2009 Share Posted January 21, 2009 Wastegate spring is your mechanical min pressure, this is why 0.8bar is a nice spring, the boost controller is then used to raise it above wastegate pressure. unless you have an ITS wastegate with an adjustable spring Link to comment Share on other sites More sharing options...
Jellybean Posted January 21, 2009 Author Share Posted January 21, 2009 Wastegate spring is your mechanical min pressure, this is why 0.8bar is a nice spring, the boost controller is then used to raise it above wastegate pressure. How does the boost controller raise it above wastegate Spring rate pressure Will the wastegate not just keep on opening if you try to exceed the mechanical min pressure preventing you increasing the boost? Link to comment Share on other sites More sharing options...
Wez Posted January 21, 2009 Share Posted January 21, 2009 The wastegate has a manifold pressure feed working against the spring, the boost controller sits in between and meters the amount of air/pressure. Link to comment Share on other sites More sharing options...
Jellybean Posted January 21, 2009 Author Share Posted January 21, 2009 The wastegate has a manifold pressure feed working against the spring, the boost controller sits in between and meters the amount of air/pressure. So if I understand correctly, The waste gate vents excess boost and the boost controller tells the manifold pressure feed: X Bar is excess pressure anything above X Bar send to waste gate otherwise feed it via the turbo Link to comment Share on other sites More sharing options...
Wez Posted January 21, 2009 Share Posted January 21, 2009 http://en.wikipedia.org/wiki/Wastegate Link to comment Share on other sites More sharing options...
edge Posted January 21, 2009 Share Posted January 21, 2009 Link to comment Share on other sites More sharing options...
heckler Posted January 21, 2009 Share Posted January 21, 2009 cool, that was actually quite interesting... Link to comment Share on other sites More sharing options...
edge Posted January 24, 2009 Share Posted January 24, 2009 cool, that was actually quite interesting... Yeah good little vids that explain it quite well if you can put up with the yanks talking. Link to comment Share on other sites More sharing options...
jacko Posted January 25, 2009 Share Posted January 25, 2009 the boost controller just bleeds air out of the vac line to the wastegate, so it makes the wastegate think the car is running less boost than it actually is Link to comment Share on other sites More sharing options...
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