Lol. There is one or two for sale in the forced induction FS section right now I believe.

 

I did try oiling it before replacing... I went with a Tial Q. Buy a new vband clam as the flange on the BOV is a different size

 

Did you rev to 6-7K rpm and let off? Mine needs to be rev higher for the BOV piston to move. Gently pulling on the throttle cable is not going to move the BOV piston. The rpm is not high enough.

Take out the BOV and put your weight on the piston using a soft handle such as a hammer or screw driver. It takes considerable weight to push it down, but it should move freely.

 

Thanks, would you say that the Tial Q is significantly louder?

Right after my tune last august, the piston on the BOV did move by gently pulling on the throttle cable. So it's not functioning as it normally did.

I think yours might not be functioning properly also, but I am not an expert on BOV's, I just know that it used to move.

I'll have to try pushing the piston down to see if it even moves.

 

I don't think it s any louder..you really need a lot of force to engage the bov

Sent from my Galaxy S II using Tapatalk

 

What do you mean "a lot of force"? When pushing it down by hand or when the engine opens it?

 

Here's a quick test. Run the car at idle. The S2000 at idle draws a vacuum of around 21 in/hg. Check your boost gauge. The vacuum at idle should help with the reducing the BOV spring pressure. Go to the BOV and wrap your fingers around the BOV piston. You should be able to compress the piston with your fingers when the car is at idle.

Also make sure the BOV is connected to a vacuum source. I have mine teed off from my boost gauge vac line.

As per Mr.C, your BOV should have the pink and blue spring.



https://www.s2ki.com/s2000/topic/788...page__st__2079

Also recommended by turbosmart base on vacuum,

Turbo SMART Spring Chart

 

I took it apart and oiled it. Was I supposed to oil the diaphragm too?

Reinstalled and tried what you said. Had the car idle and the pushed the piston up. It moved up stayed in the "up" position until either 1) I pushed it back down or 2) I gently revved the engine.

Any thoughts?

 

That's funny your bov isn't working.... mine did the same crap...frustrating that multiple kit owners have the same issue.. When I sent the bov into ptuning they told me the wrong spring was in it...well that's the damn spring you all gave me when I bought the kit....

 

LMFAO!!! What the hell?!?