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GFB BOV Hybrid #1003 installed.YUK YUK YUK YUK!!!!

superspit
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superspit Mentor

superspit

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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.

superspit Mentor

superspit

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  Messiah said:
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

Guest RedLineGTR

Posted
Posted

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 :)

rs73 Grand Master

rs73

Posted
Posted
  Messiah said:
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....

Zensoku Collaborator

Zensoku

Posted
Posted

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...

superspit Mentor

superspit

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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!!

superspit Mentor

superspit

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  Quote
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!!!

superspit Mentor

superspit

Posted
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  Shane said:
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?

superspit Mentor

superspit

Posted
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  Quote
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.

Zensoku Collaborator

Zensoku

Posted
Posted

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?

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