Jump to content
SAU Community

Recommended Posts

Hey guys, i recieved my hks ssqv bov today, put it on, and its causing a shitload of chatter.

I dont get it, its a full atmospheric valve, why is it doing this?

I cant open the valve manually all the time, it will go from being able to be pushed open by fingers, to being "stuck" and feels like its hitting something????

Any help????

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/
Share on other sites

pull it apart and have a look? pretty sure the SSQV are fairly simple, most BOV's are. Just make sure you remember where everything goes and oil it before re-assembling. It shouldnt be hitting anything if you just got it unless something has come dislodged inside

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409275
Share on other sites

the screw on the back of it, loosen the lock nut and then adjust that, mine was way tight and pretty much surged all the time, also your length of intercooler piping and may make a difference and i also found that where my wastegate actuator line was coming from made a difference EG standard spot, big surge so i drilled and tapped into the boost pipe right after the turbo and it surged less

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409829
Share on other sites

the screw on the back of it, loosen the lock nut and then adjust that, mine was way tight and pretty much surged all the time, also your length of intercooler piping and may make a difference and i also found that where my wastegate actuator line was coming from made a difference EG standard spot, big surge so i drilled and tapped into the boost pipe right after the turbo and it surged less

Is the fact im only running 9 psi going to make a difference??

The little pink pin slightly opens, but the rest of seal barely moves, the stock bov is louder than this one

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409843
Share on other sites

they are meant to work in two stages but 9psi should be enough to open it fully, is the signal line going to it coming from your manifold (after the throttle body)

its in the exact same location as where the stock bov was, same vacuum line aswell. if i rev it and push the valve with my finger, its very loud, what i was expecting it to do normally. I took it apart today, moved the spring around and i am able to push it in now. But its as if the second stage is just way to weak to open properly.

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409854
Share on other sites

it wont be loud if your just free revving it as no load on motor = not much boost when free rev.

take it for a spin, even take a spanner and adjust it on the road, until you are happy with it, it was said before and im sure you know now you have rebuild it they are pretty simple so no much can go wrong, im pretty sure that if the adjusting screw is out then it causes more surge and if its screwd in then you will have less of a surge but dont take my word for it it has been a long time since i have adjusted mine, good luck

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409867
Share on other sites

it wont be loud if your just free revving it as no load on motor = not much boost when free rev.

take it for a spin, even take a spanner and adjust it on the road, until you are happy with it, it was said before and im sure you know now you have rebuild it they are pretty simple so no much can go wrong, im pretty sure that if the adjusting screw is out then it causes more surge and if its screwd in then you will have less of a surge but dont take my word for it it has been a long time since i have adjusted mine, good luck

Thanks for your help mate, one last question, wheres the adjusting screw??

This is the bov below

post-69443-1282395898_thumb.jpg

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409871
Share on other sites

that style (the newer one) is not adjustable and works of pressures, if you have lubed up the seat and the valve moves freely now take it for a drive and see what you think, if not then im sorry i was thinking you had the other type.

sorry again and good luck

Link to comment
https://www.sau.com.au/forums/topic/333692-bov-problem/#findComment-5409882
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Thanks everyone for the replies and suggestions. Got the seats out (hoping I could find some existing grommets but no such luck). By tapping and measuring etc. I could figure out where I could drill through if needed. But first I borrowed an inspection camera and managed to go through factory holes in the chassis rail and could see that the captive nut was holding steady which is why it could retighten. So it was indeed a stripped section of thread, so I applied downforce by levering the bolt head with a screwdriver and went slowly back and forth until it came out. Camera helped a lot cos I could monitor that the captive nut was holding tight. Now I just have one very seized main subframe nut to tackle 馃槄
    • BOVs do have a purpose, if you ever log pressure before and after the throttle body, you will see a spike pre throttle on lift off from a WOT condition. Enough to bend throttle blades / damage e-throttle motors or simple assist in blowing off cooler pipes. FWIW, the above on really applies to those running at least 2 bar of boost. OP shouldn't have an issue, on the other hand, here are some videos of my shit box over a decade ago with some succulent dose with the airbox on and off. That shit box is unrecognisable these days 馃珷    
    • I've tried all different combinations of BOVs/ no BOV and stock bypass valves over the years, on gear changes the stock bypass valve seems to get the car back on boost quicker because in part the turbos wheel speed isn't being slowed down by reversion, although they have issues holding boost much over the stock setting. Most aftermarket BOVs you can adjust the spring, tighter will make it open later and close sooner, but in my experience it'll cause a bit of flutter at low load/rpm anyway. I've also got some input into this whole no bov causing turbo wear, never had an issue on any on my turbos HOWEVER, I got my R33 GTST with 200k kms on it, with from what I can see still has the original turbo, no lateral shaft play but has about 4-5mm of play in and out which to me seems like a worn thrust bearing from years (100-150k kms?) of turbo flutter running no bov, so maybe there is some truth to it in the long run. But that'll never stop me loving the Stutututu while I have the car.   OP just wants to know if he can run a atmo vented BOV with no major issues and the answer is YES, plenty of people do it, there's no harm in installing it and seeing how it runs before spending $$$ on an aftermarket ecu, last time I bought a Nistune it was $2400 for install and a tune , unsure of todays prices but you get me. Crazy money to spend just to fix the minor inconvenience of stalling that can be overcome by letting the revs come down to near idle before putting the clutch in or a little bit of throttle to avoid it. You're better off leaving the ecu and tune for after a bigger turbo/injectors have been installed to take full advantage of the tune and get your moneys worth.   Let OP have his Whoosh sound without trying to break his bank haha
    • I see you missed the rest of the conversation where they have benefits, but nothing to do with avoiding breaking turbos, which is what the aftermarket BOV made all the fan boys, tuners, and modders believe was the only purpose for them...
    • But they do so for the other reasons to have a compressor bypass. It's in the name.
  • Create New...