Gtr Bov On Rb25det Neo

[mattis96]

this is probably a stupid question, does the gtr bov need to be plumbed in or can it be left to vent to atmo? about to purchase a new bov before full tune so it would get tuned if needed to be. thanks

[R31Nismoid]

^ needs to be plumbed, they leak @ idle (by design)

I'll update more tonight guys on what needs to occur... bit flat chat @ work

[Mr. Untouchable]

I've fitted dual GTR bov's on my car. They work perfectly, as for sound, they sound excellent - very quiet. as far as sounding "exactly" like a GTR, I think you really need to mount them in the same position as a GTR (under the right hand front skirt) on the cooler entry and run the factory plastic solid return pipe etc.

there is some pics in this thread how I mounted them... http://www.skylinesaustralia.com/forums/Pr...90&start=90

cheers

Edited May 3, 2010 by Mr. Untouchable

[ako299]

do the gtr bov fit directly onto the rb20 aswell?

[Hanaldo]

I've fitted dual GTR bov's on my car. They work perfectly, as for sound, they sound excellent - very quiet. as far as sounding "exactly" like a GTR, I think you really need to mount them in the same position as a GTR (under the right hand front skirt) on the cooler entry and run the factory plastic solid return pipe etc.

there is some pics in this thread how I mounted them... http://www.skylinesaustralia.com/forums/Pr...90&start=90

cheers

Great stuff, exactly what i was looking for, cheers mate!

I'm not after loud, i just want the sound. I still don't really know what i'll be looking for to fit these as i haven't got the engine yet, but where is the stock bov located on an R34 GTT? Can that setup be made to fit in the factory location, or will i have to move it?

[R31Nismoid]

Hi Guys, sorry to hijack the thread but are you using GTR bovs on RB25DET's just for noise or is there another purpose?

Will the standard RB25DET one handle 300rwkw?

Usually just replacing a dead factory one.

GTR ones are just stronger. Stock BOV might be fine either way. Plenty making 300rwkw on them.

Ok but that still sounds quite similar to the twin setup. I'm not really after the flutter effect, just the sound of the bov. Does your bov sound like that all the time, or just under heavy load?

Say i wanted to install the twin setup on my car, what would need to be done? Is it possible? How would it differ to the single setup?

MOST people don't use them just for the noise, rather the fact that they are a very very good bov and can handle a lot of boost. I personally love the sound of them, i think they are the best sounding bov you can get. So i'm going for the upgrade, but really want the sound as well seeing as they sound so good.

Ok the issue is room. Once you see the GTR BOV assembly you'll understand, there is not a lot of room with the return piping etc.

You have to have cooler piping that goes in/around the guard on the drivers side - that's where a GTR has them - POST cooler.

That BOV setup was when i had a single - running duals now in a different config however the BOV was right next to the throttle body (basically like a factory RB25 for all intents and purposes).

It would only blow off like that on 24psi, when it was doing 17psi it was nowhere near as pronounced.

Doubles differ to single as on low throttle the dual ones "bounce" off each other. Its very hard to explain unless you've heard a GTR on light/trailing throttle and back off. It does sound very cool IMO. No other BOV setup sounds like it as they are all single.

[Hanaldo]

Usually just replacing a dead factory one.

GTR ones are just stronger. Stock BOV might be fine either way. Plenty making 300rwkw on them.

Ok the issue is room. Once you see the GTR BOV assembly you'll understand, there is not a lot of room with the return piping etc.

You have to have cooler piping that goes in/around the guard on the drivers side - that's where a GTR has them - POST cooler.

That BOV setup was when i had a single - running duals now in a different config however the BOV was right next to the throttle body (basically like a factory RB25 for all intents and purposes).

It would only blow off like that on 24psi, when it was doing 17psi it was nowhere near as pronounced.

Doubles differ to single as on low throttle the dual ones "bounce" off each other. Its very hard to explain unless you've heard a GTR on light/trailing throttle and back off. It does sound very cool IMO. No other BOV setup sounds like it as they are all single.

So it's not as simple as remove stock bov, replace with GTR bov and replace stock plumbing with bigger plumbing to suit GTR bov? I will have a FMIC with piping going from drivers side back over the fan shroud. What do i need to do to install the bovs?

I do understand what you mean with the "bouncing", i've driven a couple of GTR's that sounded great with their stock bovs. Made me fall in love with the GTR bovs

Edited May 3, 2010 by Hanaldo

[R31Nismoid]

Well that's what you do to install a single one.

Duals look like this though:

So you can see it's a tad more involved as they run off the same feed/return.

[Hanaldo]

So you can't just join the stock plumbing to the GTR plumbing? Using a reducer hose or something?

[R31Nismoid]

And what, just have them hang there?

They are the size of two grown mans hands roughly in terms of area (as you can see from the pic)

I'm going to struggle to see where you can mount something like that neatly in a factory GT-T/GTS-T position