_Shane_ Posted March 17, 2008 Share Posted March 17, 2008 well my piping for my ssqv ripped the other day so driving the supra now at the moment with the bov flange blocked etc and the car feels well mint, really responsive, dunno is it just me or what lol might even leave the bov off full time Quote Link to comment Share on other sites More sharing options...
jaymdee Posted March 17, 2008 Share Posted March 17, 2008 You may find this rather reduces the life of your turbos, as the BOV prevents the boosted air from backing up and stalling them when you lift off the throttle. Race cars get a way with no BOV as they get rebuilt all the time, but on a road car, you need it or I think it will be new turbos in a short while. Quote Link to comment Share on other sites More sharing options...
_Shane_ Posted March 18, 2008 Author Share Posted March 18, 2008 you still hear loud chattering going through blitz filter will have the ssqv back on as soon as i get a bit of hosing Quote Link to comment Share on other sites More sharing options...
Daston Posted March 18, 2008 Share Posted March 18, 2008 that chattering is your turbos stalling Quote Link to comment Share on other sites More sharing options...
Scott Posted March 18, 2008 Share Posted March 18, 2008 Why does this chattering still happen on some singles that have dump valves? Can the valve just not let the boost out fast enough? Scott =op Quote Link to comment Share on other sites More sharing options...
jaymdee Posted March 18, 2008 Share Posted March 18, 2008 Singles have an external wastegate and that is what you can hear chattering on the Singles, not the turbo stalling. As stated, Shane, the noise you can hear is your turbos stalling when the boosted air has nowhere to go when the throttle plate closes. 10,000 rpm to nothing - not good for them! Quote Link to comment Share on other sites More sharing options...
kieren1234 Posted March 18, 2008 Share Posted March 18, 2008 Singles have an external wastegate and that is what you can hear chattering on the Singles, not the turbo stalling. As stated, Shane, the noise you can hear is your turbos stalling when the boosted air has nowhere to go when the throttle plate closes. 10,000 rpm to nothing - not good for them! Wrong, the chattering noise isnt the wastegate as far as i know and is in fact compressor stall, some singles need to have two BOV's to avoid this. Quote Link to comment Share on other sites More sharing options...
Daston Posted March 18, 2008 Share Posted March 18, 2008 actually wastegates make no noise its just that single turbos stall a little bit due to the bigger diamator (it has been discussed before ) Quote Link to comment Share on other sites More sharing options...
Scott Posted March 18, 2008 Share Posted March 18, 2008 Thought so, cheers guys I was pretty certain wastegates weren't loud and certainly didnt chatter. At most i would expect a hiss or woosh when on full boost. Scott =op Quote Link to comment Share on other sites More sharing options...
jaymdee Posted March 18, 2008 Share Posted March 18, 2008 Oh Well - learnt something new then. Was sure it was to do with the external wastegate, but seems not Quote Link to comment Share on other sites More sharing options...
SteveR Posted March 18, 2008 Share Posted March 18, 2008 . . Quote Link to comment Share on other sites More sharing options...
kieren1234 Posted March 18, 2008 Share Posted March 18, 2008 Oh Well - learnt something new then. Was sure it was to do with the external wastegate, but seems not Wastegate makes a loud whooshing noice (if with a screamer pipe) when you have reached the boost level of either the WG spring pressure or boost controlled pressure. Quote Link to comment Share on other sites More sharing options...
Scott Posted March 18, 2008 Share Posted March 18, 2008 Wastegate makes a loud whooshing noice (if with a screamer pipe) when you have reached the boost level of either the WG spring pressure or boost controlled pressure. Yeah, if you watch some of the vids on youtube, when you hear the big singles on full chat, you hear the wastegate open and the woosh sounds like a jumbo jet. Scott =op Quote Link to comment Share on other sites More sharing options...
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