ericem Posted June 13, 2012 Share Posted June 13, 2012 Just curious recently put in this bpv, bought it used. Whenever I rev the engine (obviously yes the bpv will close) it makes a audible tap or knock sound. Would this be normal for the valve to make or is something possibly wrong? I will post a vid later. Link to comment Share on other sites More sharing options...
bmx045 Posted June 13, 2012 Share Posted June 13, 2012 the tapping is there to alert nearby ricers that you are ready to race Link to comment Share on other sites More sharing options...
jasejase Posted June 13, 2012 Share Posted June 13, 2012 full recirc correct? I added my TS BPV at the same time in intake and turbo went on... So i dont really know what noise came from where. lol But under some mild acceleration, as soon as you lift off the gas, it makes a bit of a knock. It sounds like a cough almost. AZP said it was likely the larger wastegate.... But eh - not sure what it is. My buddy with a near similiar build has the same exact noise. When you hammer on it - its a good ol psssshhhhhhh sneeze though. Can you ever get the sneeze noise? or is it always a knock and a tap? Link to comment Share on other sites More sharing options...
No DRFT Posted June 13, 2012 Share Posted June 13, 2012 Can you take it apart and lube the moving parts? I have no control over drippie. Link to comment Share on other sites More sharing options...
chutrain Posted June 13, 2012 Share Posted June 13, 2012 Have the GFB and does the same thing. Did it all the time, but I took it apart and lubed up the piston and sleeve and that helped. Haven't paid too much attention to see if it is still making the noise. Link to comment Share on other sites More sharing options...
ericem Posted June 13, 2012 Author Share Posted June 13, 2012 Yes it is a full recirculate, going to take it out and take it apart. At first I thought the engine was knocking whenever I tapped the gas scared the shit out of me lol. The valve itself makes no noise from in the car, but windows down it I can hear it. Even letting off the gas sounds as quiet is not quieter than the stock valve. Link to comment Share on other sites More sharing options...
ragman Posted June 15, 2012 Share Posted June 15, 2012 ...It sounds like a cough almost.... sounds like possible compressor surge. if it is, that is bad for turbo. Can you adjust the bpv at all turbosmart? Link to comment Share on other sites More sharing options...
ericem Posted July 22, 2012 Author Share Posted July 22, 2012 I watched my knock sum btw it does definitely pickup that knock it is quite annoying I like the way the bpv reacts definitely closes sooner and I hear less hiss if any at partial throttle where as the stock one would noticeably be hissing! Any ideas? I lubed it with motor oil plus there is PLENTY of blow by going through the valve. Should I just grease up the piston really well although I don't personally see this being a good idea. I can get a forge one, but I feel bad selling this one. Maybe get a rubber gasket instead of the paper one? ideas ideas... lol Link to comment Share on other sites More sharing options...
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