Jump to content
SAU Community

Recommended Posts

Hi, and thankyou to those who gave advice on my G-FORCE thread!

Some interseting things came from that!!

Anyways....Installed the GFB BOV last nite (after boost/rev problem was sorted as per previous thread), and I'm about to take the bloody thing BACK OFF! Noise is nice..if ur into that...but power flow is lost...that is...boost comes on slower, but still there. I've checked for leaks: I suspect that the valve itself is so badly built that it has inherent leaking abilities. After my G-FORCE issue thread, I now realise that even the slightest leak in our cars induction system will cause grief...and potentially more dollars to find and fix.

Has anyone else expd this? GOOGBYE to Go Fast Bits BOV......and f**k you!

Thanx.Mark.

stock BOV leaks

I'm willing to bet that a good condition stock BOV is still better, in this case!!

Just way too many 'joints and screw in parts' on the After Market stuff.

Do you think the whole BOV thing on a relatively standard car may be a bit of a wank??? I mean, they look good 'en all.....but........

Guest RedLineGTR

i have a GFB hybrid BOV installed on my car for about a year or so now experimenting with the stock one (temp), the GFB one held boost fine didnt notice any type of leaks or anything, the boost came on harder with the GFB one as compaired to the stock BOV which does leak abit and you get boost comming on much smoother, but i like the whiplash :)

stock BOV leaks

I've seen ppl running over 1 Bar using stock BOV and it's fine. If yours leak, change the BOV spring so you can hold more boost. Might worth to check that your wastegate is not leaking before accusing the stock BOV as the culprit.

BTW, who needs choo choo sound anyway? Leave it to locomotives....

guys, depends on the individual setup on your car...

is it mounted:

1. After the intercooler and before the throttle body?

or...

2. After the turbo and before the intercooler?

reason i ask is because if there is a pressure variance between what's actually trying to "push" the BOV open and what's running down it's vacuum hose, then you're bound to get leaks. I wouldn't be quick to blame the BOV to be at fault. As quite often than not, the problem can be associated with situation number 2 (above).

In most situations, for example, there might be 15psi coming from the turbo compressor housing, but by the time the boost pressure makes its way through the intercooler and piping, this pressure may have dropped to say 12 psi due to intercooler and piping restrictions...

The pressure in the inlet manifold which travels down the vacuum line to the BOV will not being "enough" to hold the BOV shut when the throttle is open. Hence, your leaks you are reporting...

I used the proper GFB adaptor kit, (Ofcourse you want the best chance of it working),

seemed to mount on nicely to the pipe, then the sus bit, you have to install a pissy little O ring inside the BOV base that really seems slack. Between that O ring and the vac nipple i could just see POTENTIAL for leaks...I just was not confident even before turning the key!! Then that bloody 'flutter" and woosh..My little brother loves it, but if someone took my rego down, I wouldn't be surprised. If i was to PLUM it straight back into the turbo and block off the 'trumpet' part (1 of 3 options in the kit), then what's the point of having it......it still leaks..Now the ridgey didge is back on....***** ACE!!

I havnt put mine on yet but the first thing i changed with it was the adapter, and swapped it with a direct bolt-on to fit a skyline..

yep, that's wot I did ,bro........test it in second gear going hard....does your boost feel like it's coming in later and ..i don't know...just different??

GOOD LUCK!!!

I'm expecting one of these to turn up in my mailbox any day now. The first thing I am planning to do is get it welded to a proper adapter so there is absolutely no leaks.

keep an eye on that O ring and 'nipple' , maybe you should 'teflon tape'it?

I've seen ppl running over 1 Bar using stock BOV and it's fine. If yours leak' date=' change the BOV spring so you can hold more boost. Might worth to check that your wastegate is not leaking before accusing the stock BOV as the culprit.

BTW, who needs choo choo sound anyway? Leave it to locomotives....

ummm, my friend....mmmm..good comment on the choo choo, I agree.

But, ummm....did I not base the entire thread on saying that the stock BOV is good? Have a re-read my GT brother, andhavagoodweekend.

fatgts-r, i should have been more careful with my explanation. i think you understood the point i was making, but you also picked up on my mistake. good spot!

setup number 2 is the culprit. not setup number 1. all GTR skylines are setup like situation number one. have you heard an gtr owners complain about boost leaks?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
    • The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
    • Yes they do. For some maybe. But for those used the most by abusers, ie Skylines, the numbers are known. The stock eyebrow height for R32/3 Skylines is about 365/375mm or thereabouts. The minimum such heights are recorded in adjacent columns in the database.
×
×
  • Create New...