Bov Problem

[TMW-R34]

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????

[89CAL]

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

[hypergear]

Need to make sure your vacuum source to the BOV is after the throttle body

[TMW-R34]

I have replaced the stock bov i had on there, blocked off the recirc pipe, connnected the vacuum line back into it, and just bolted it straight on to the flange.

[R31Nismoid]

increase the line size to the BOV

or loosen the BOV itself off, sounds like its set too tight.

[TMW-R34]

increase the line size to the BOV

or loosen the BOV itself off, sounds like its set too tight.

How do you loosen it?? I have taken the main cover off, it spins but doesnt seem to get any looser??

[PaulosECR33]

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

[TMW-R34]

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

[PaulosECR33]

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)

[PaulosECR33]

and if its getting stuck or feels like its binding up it wouldnt hurt to lube up the stem seal and the seat,

[TMW-R34]

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.

[PaulosECR33]

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

[TMW-R34]

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

[PaulosECR33]

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

[PaulosECR33]

as you can see this type has the screw on the back

[The Mafia]

Put the stock one back on so you don't sound like a dickhead, and stall all the time?

[TMW-R34]

Put the stock one back on so you don't sound like a dickhead, and stall all the time?

It doesnt actually stall at all. its same as the stock bov. But i have put the stocker back on.

[30three]

Sorry dude forgot to reply to your PM the other day but everyone has answered your questions. I have a GTR stocky on mine. Works very well and sounds tough as

[Luke_GTS-T]

put the stock one on... problem solved