R33 Bov

[33wishes]

So I've read some where on here, what does the little hole do on the inside of the end plate of my bov. I remember something about blocking it up.

[hypergear]

Its a re-circulation valve. I believe Its there getting rid of compressor surge. Proper BOV is recommended.

[33wishes]

Oh! Sounds like I need a new one, any recommendations on a tight budget.

[scotty nm35]

Tight budget, just tap an M5 grub screw into it, at least that way you can remove it if you don't like the way it drives...

Otherwise the Turbosmart Kompact plumback is perfect to replace it.

[KiwiRS4T]

Or buy my GTR bov!

[hardsteppa]

I tried turbosmart kompact, its way smaller inside than stock bov and gave me turbo flutter. Thought it was shite, snd ditched it, put stock back on. Small hole is 'slight leak' making the on/off of bov smoother but less responsive. Plug it up as scotty says, better from a performance point of view.

[scotty nm35]

Smaller inside? Mine doesn't flutter, even on 40 psi.

The springs are replaceable, and they come slightly on the tight side from the factory. If your setup flutters slightly you could just ask them for a softer spring.

[Dose Pipe Sutututu]

Stock and unmodified BOV will hold 1 bar no worries.

I'm assuming your car is stock, which I believe. Just leave it alone.

[33wishes]

not stock about 400hp @wls , I was getting a whistle noise on full boost.like a leak. I since have blocked the mentioned whole , and now whistle is gone, but bov now sounds different.

[Trex]

But plugged my hole. Best thing for boost.

[RBrennan25]

not stock about 400hp @wls , I was getting a whistle noise on full boost.like a leak. I since have blocked the mentioned whole , and now whistle is gone, but bov now sounds different.

I'm actually getting the same thing, any chance of getting a photo of the aforementioned hole?

[Ben C34]

I'm actually getting the same thing, any chance of getting a photo of the aforementioned hole?

Take off your bov. Look at it.

If you can't see the hole give up on everything.

You can't block.the hole with the bov on the car.

As the hole is a little larger than m5 tapping size you can simply cut slots in a bolt to make a tap if you don't have a tap handy.

[hardsteppa]

I just used a selftapping roofing screw, they have a reallly flat head too so sits flush in the limited space there

[Blackkers]

Oh look this thread again.

GTR bobs are a good option too. People have run 25+ psi no issues

Edited December 15, 2014 by Blackkers