Adam Kindness Posted June 23, 2002 Share Posted June 23, 2002 Bleed Valve Im toying with the idea of fitting a bleed valve! I've searched the tech forum and found a few articles on the subject... BUT could someone just explain the process again I know the more air you 'bleed' off increases the boost, i also know its not the easiest way to control boost! Where do i put the T - piece? any pics? sorry, i put this on the end of another post!!! Doh Link to comment Share on other sites More sharing options...
vibrio Posted June 23, 2002 Share Posted June 23, 2002 Right. my GT had (he he he) an electronic boost controller to adjust boost (0.8 bar actuator).I replaced it with the bleed valve. http://upload.turbosport.co.uk/gallery5/20026121440624340.jpg It had three pipes going into it. one from the actuator (pipe coming down from top), one that goes into the inlet track (the one on the left) just behind the AFM and the other pipe comes from the turbo (the one you can't see). witht he valve fully unscrewed max boost is 13psi against 15psi normal. then you screw it is bit by bit tell you get the boost you want (18psi). you can get two way bleed valves as well. this is what a superchip dealer will fit when you get a superchip on the GT. the hose that goes to the inlet track is blocked. if you fit a two way bleed on the actuator pipe then you should be able to control boost http://upload.turbosport.co.uk/gallery5/200262235934584392.jpg Link to comment Share on other sites More sharing options...
Guest Martin F Posted June 23, 2002 Share Posted June 23, 2002 Adam, answered in other thread. Please tell me why would somebody replace an electronic boost controller with a bleed valve ? Link to comment Share on other sites More sharing options...
Adam Kindness Posted June 23, 2002 Author Share Posted June 23, 2002 no control - http://www.mkiv.com/techarticles/bleedert/bleedert.htm with valve - http://www.mkiv.com/techarticles/manual_boost_controller/manual_boost_controller.htm Link to comment Share on other sites More sharing options...
Adam Kindness Posted June 24, 2002 Author Share Posted June 24, 2002 see pic Link to comment Share on other sites More sharing options...
Demon Posted June 24, 2002 Share Posted June 24, 2002 Why take out a boost controller and fit a bleed valve instead ??? Opps just seen Martin asked the same thing Link to comment Share on other sites More sharing options...
Adam Kindness Posted June 24, 2002 Author Share Posted June 24, 2002 ignore the punto boy!!!! is that the correct pipe to fit the bleeder too? Link to comment Share on other sites More sharing options...
Terminator Posted June 24, 2002 Share Posted June 24, 2002 Bleed valve - simple, fixed, adjustable only from under the bonnet requires a boost gauge to set it up. Boost controller - complex sophisticated, adjustable from in the car on the move, several settings, often comes with a boost gauge built in. If you have the latter, why oh why go for a bleed valve. How much did SC's charge, just a s a matter of interest? Link to comment Share on other sites More sharing options...
Adam Kindness Posted June 24, 2002 Author Share Posted June 24, 2002 Phil - i havnet any at the mo!!! Link to comment Share on other sites More sharing options...
vibrio Posted June 24, 2002 Share Posted June 24, 2002 teh peirburg valve does not spin the turbo up quickley and is not adjustable. bleed makes the car more drivable. Link to comment Share on other sites More sharing options...
Dragonball Posted June 25, 2002 Share Posted June 25, 2002 Ok Guys - apart from the obvious (£500 v £nix) what would you say are the pro's and cons of fitting a manual bleed valve? From what has been said and on the links posted - the little blighter looks like nothing but good news? Please enlighten oh great Obi-wan's Cheeeeeeeeers Paul:cool: Link to comment Share on other sites More sharing options...
GavinL Posted June 25, 2002 Share Posted June 25, 2002 Originally posted by Paul E Ok Guys - apart from the obvious (£500 v £nix) what would you say are the pro's and cons of fitting a manual bleed valve? From what has been said and on the links posted - the little blighter looks like nothing but good news? Please enlighten oh great Obi-wan's Cheeeeeeeeers Paul:cool: Some cars have boost spikes when running bleed valves. A EBC will stop this happening and allow faster spooling of the turbo's. In short , some owners/tuners say a bleed valve is perfectly okay, cheap too buy and easy too disguise and others advocate the use of an EBC. The EBC is probably the better solution in the long run but I can see no real reason to replace a one with a bleed valve. Link to comment Share on other sites More sharing options...
Guest Martin F Posted June 25, 2002 Share Posted June 25, 2002 Right here's my stab :- Bleed Valve Pro's It's cheap Con's Boost will vary with air-temp\humidity Can only be adjusted under the bonnet (unless you want to plumb vacuum pipes into the cockpit). Hard to calibrate, i.e. obtain a certain boost figure. Electronic Boost Controllers (EBC's) Pro's Tend to hold boost at a set level. Easy to change to different boost settings and a stock level as you drive. Generally easy to tune for a certain level of boost. Can aid in spool up of turbo's. Usually include a boost meter. Con's Can be expensive Some are not easy to setup. You pay's your money you take's your choice. Link to comment Share on other sites More sharing options...
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