Factory Gtr Bov

[Marcus89]

I believe my GTT's stock BOV is leaking boost due to opening too easily. I have found little bits of information claiming that GTR bov's are supposed to be able to handle much more boost but there doesn't seem to be any definitive answer as to how much.

Now I don't want any wanky noises or legality issues a GTR BOV will look pretty much stock making life much easier.

[Hanaldo]

Mine holds 20psi rock solid, no issues. Have seen people on here running lots more.

[Piggaz]

Have run 30 on mine.

[Marcus89]

Hanaldo is your's a GTR Bov or just the stock GTT?

Cheers piggaz looks like I might grab one asap then

[R31Nismoid]

Have seen over 35psi through GTR BOV's

I've said it in plenty of threads, search would confirm other users as well. It will be fine.

[Marcus89]

Awesome saves me worrying about any of these stupid aftermarket ones surprised they can handle that kind of boost pressure thought it would of been maybe 20psi

[Hanaldo]

Hanaldo is your's a GTR Bov or just the stock GTT?

Cheers piggaz looks like I might grab one asap then

GTR mate

[Mitcho_7]

Are gtr bovs a direct bolt on for gtst's with same size return lines and everything?

[Hanaldo]

Are gtr bovs a direct bolt on for gtst's with same size return lines and everything?

No. Flange is exactly the same, but GTR has a much bigger outlet.

[Mitcho_7]

No. Flange is exactly the same, but GTR has a much bigger outlet.

Is the gtr like 1.5" or something like that? I think the gtst outlet is 1 1/8" or so.

[TTT]

heat up the return hose and push it on the end of the bov..

or lube it up a little

[Bsa]

Hope these are as good as what people say I'll be running one on the bmw

[KiwiRS4T]

I put a GTR bov on my RB25DET - alongside the stock item you can see the more robust construction of the GTR unit.. As said bolts right up just have to adapt the bigger outlet.

[Hanaldo]

heat up the return hose and push it on the end of the bov..

or lube it up a little

Not sure if standard 25's are different to Neo's, but there was no chance of this on mine. The standard GTT return hose could actually fit inside the GTR bov outlet.

I ended up using a large piece of radiator hose to go over the GTR outlet, then pushed the standard return hose inside to act as a reducer. Clamped it down hard and never had any trouble with it. When I put it back on my new setup I will see if my fabricator can make me a reducer out of hard pipe, will make it look a bit better.

[Marcus89]

I also wasn't too sure on the install figured I'd just get one and give it a shot sounds like it's very easy the best part is the flange being the same different size outlet isn't a big deal hose is cheap. I'll probably copy Hanaldo's job unless I have something hand around to use as a reducer

[Mitcho_7]

are 32, 33 and 34 gtr bov's all pretty much the exact same thing? Anyone know the exact OD of the gtr bov exit ?

[Marcus89]

are 32, 33 and 34 gtr bov's all pretty much the exact same thing? Anyone know the exact OD of the gtr bov exit ?

If I remember I will measure it up when I recieve mine. I hope they all work pretty much the same not sure which GTR the BOV I have bought is coming from

[Hanaldo]

are 32, 33 and 34 gtr bov's all pretty much the exact same thing? Anyone know the exact OD of the gtr bov exit ?

Measured mine last night with some verniers. The GTR bov is a 35mm diameter outlet, you'll need a hose with a 40mm ID. The standard 25 bov is a 25mm outlet.

*EDIT* Millimeters not inches

Edited April 19, 2012 by Hanaldo

[Bsa]

*EDIT* Millimeters not inches

That's not what she said

[Mitcho_7]

Measured mine last night with some verniers. The GTR bov is a 35mm diameter outlet, you'll need a hose with a 40mm ID. The standard 25 bov is a 25mm outlet.

*EDIT* Millimeters not inches

Thanks for that. If the outlet is 35mm od, a 38mm id silicone reducer should be about right shouldn't it?