Pig Posted April 24, 2006 Author Share Posted April 24, 2006 You trying to say i dont know my single setups homer lol. p.s too late to ring terry + he is pretty difficult to get hold of! Quote Link to comment Share on other sites More sharing options...
DamanC Posted April 24, 2006 Share Posted April 24, 2006 Jon are you trying to describe the fluttery noise from the mrpoo in this clip? http://www.pistonheads.tv/video.asp?id=703&nr=1 Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 24, 2006 Share Posted April 24, 2006 Surely the others that get the noise wouldnt run the car with out a BOV as this would be really bad for the turbo?? ran mine for ages without a bov with no probs, but i was advised to fit one Quote Link to comment Share on other sites More sharing options...
supragold Posted April 24, 2006 Share Posted April 24, 2006 I only get the noise your talkin about on higher boost and when I'm driving it like I stole it. Quote Link to comment Share on other sites More sharing options...
Branners Posted April 24, 2006 Share Posted April 24, 2006 Im trying to find the video that was taken at the j-tuner event at Brunters, my car was there and you can hear it make that noise as it goes past the camera. I have been told its my stock bov on a single turbo car that does it. JB Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 24, 2006 Share Posted April 24, 2006 Look guys, it IS wastegate flutter. This occurs when the pressure that is in the inlet system is almost equal to the Wastegate spring / reload - thus opening and closing the wastegate quickly (air out, turbos still spinning and air back in... and so on). You can get this noise with a BOV but to my knowledge its only a 3 way type such as the HKS SSQV, and then you would need a recirc kit to keep the air balance right. You can do it without but you just need to get it right, and its difficult. It is NOT compressor stall, although running without a BOV at the boost pressures you guys are talking about is dangerous and can cause a compressor shaft to shatter / sheer. Hope this helps Quote Link to comment Share on other sites More sharing options...
Pig Posted April 24, 2006 Author Share Posted April 24, 2006 No its the noise in the bov video. Not the fluttery noise! A Question to all that now know the noise i am talking about. How should i describe it? Could it be that my t61 wont be pushing enough boost to sort it?? Bring on the vid JB Cheers martin Quote Link to comment Share on other sites More sharing options...
RedM Posted April 24, 2006 Share Posted April 24, 2006 Do you mean a noise that sounds like an intake of breath through clenched teeth while waggling your toungue around your teeth? Try it! Quote Link to comment Share on other sites More sharing options...
Pig Posted April 24, 2006 Author Share Posted April 24, 2006 No that the dump valve chu chu chusssss noise! Quote Link to comment Share on other sites More sharing options...
RedM Posted April 24, 2006 Share Posted April 24, 2006 I'm confuddled then. Do you mean the noise right at the end? The high pitched one that sounds like a fart on a leather chair? Quote Link to comment Share on other sites More sharing options...
Homer Posted April 24, 2006 Share Posted April 24, 2006 No that the dump valve chu chu chusssss noise! If you mean the noise from CJ's car at the end of the vid I posted, thats not the dump valve, thats the noise from the external wastegate. Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 24, 2006 Share Posted April 24, 2006 If you mean the noise from CJ's car at the end of the vid I posted, thats not the dump valve, thats the noise from the external wastegate. Sort of yes, but also teh INduction kit will play a large part in you being able to hear this. All turbo cars can make this sound, but you can't hear it due to a closed air box system. Quote Link to comment Share on other sites More sharing options...
Homer Posted April 24, 2006 Share Posted April 24, 2006 Okay, just played this back in slow tempo and amplified the sounds. There seem to be two distinct sounds on lift off. A very quick 'csh cssh cssssh csssssh' sound (wastegate) and a louder, longer single 'Tssssssh' sound (dump valve?) Quote Link to comment Share on other sites More sharing options...
Pig Posted April 24, 2006 Author Share Posted April 24, 2006 If you mean the noise from CJ's car at the end of the vid I posted, thats not the dump valve, thats the noise from the external wastegate. Yep, thats the puppy! Matt's car makes the noise too! Quote Link to comment Share on other sites More sharing options...
chilli Posted April 24, 2006 Share Posted April 24, 2006 lmao now I'm confused too, is it a fart or a sharp intake of breath or a flutter or what? Quote Link to comment Share on other sites More sharing options...
RedM Posted April 24, 2006 Share Posted April 24, 2006 Sort of sounds like really skittish wheelspin? Quote Link to comment Share on other sites More sharing options...
chilli Posted April 24, 2006 Share Posted April 24, 2006 Sort of yes, but also teh INduction kit will play a large part in you being able to hear this. All turbo cars can make this sound, but you can't hear it due to a closed air box system. agreed that the induction kit makes it more pronounced Quote Link to comment Share on other sites More sharing options...
TRD3000GT Posted April 24, 2006 Share Posted April 24, 2006 You guys crack me up.. Just get an external waste gate and you will get this noise. Quote Link to comment Share on other sites More sharing options...
Jake Posted April 24, 2006 Share Posted April 24, 2006 He's got one already Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 24, 2006 Share Posted April 24, 2006 errrm okay... so why do I get it on my UK spec with just an HKS mushroom? Quote Link to comment Share on other sites More sharing options...
TRD3000GT Posted April 24, 2006 Share Posted April 24, 2006 your cars are all broke Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 24, 2006 Share Posted April 24, 2006 your cars are all broke Damn... another job for tomorrow. Quote Link to comment Share on other sites More sharing options...
Thorin Posted April 25, 2006 Share Posted April 25, 2006 It's the flux capacitor. Quote Link to comment Share on other sites More sharing options...
bromy Posted April 25, 2006 Share Posted April 25, 2006 I'm going with turbo stall, dont think it has anything to do with the bov as I did not used to have one and was still getting this noise Quote Link to comment Share on other sites More sharing options...
chilli Posted April 25, 2006 Share Posted April 25, 2006 I'm going for turbo stall too, often amplified by the induction kit, but typically caused by not dumping enough pressure quickly enough, when lifting off (closing the throttle) from full / high boost. if it were wastegate related, surely it would make that noise as you pass the pressure that opens the wastgate, i.e. not just on lift off but on boost and boost rise too. conversly, the well known tsssshhh is the bov operating normally... that's my two cents but if someone has the difinitive answer then I'd like to know, it's a cool noise so long as you can be sure it's not harmfull. Like I said my old car ran for years with that noise on tap, I don't think I was just lucky. Quote Link to comment Share on other sites More sharing options...
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