boost controller - bleed valve

[sumfatchin]

ive just fitted a bleed valve to my gts25t to wind up to boost to 10

pounds.

Someone told me the other day that a bleed valve can be really bad for the motor and eventually blow it up! Is this correct? if so what precautions should i follow? or should i just pull the thing off?

[MM2death]

Who ever told you that isn't very smart. The only thing that's potentially bad about bleeders is that they can have a tendancy to spike (creep higher than the boost you set).

[hippy]

i think thats why ur friend is telling u it could blow it up .. if u set it very high .. it might creep higher than the turbo can tolerate .. but 10 psi should be fine .. r33 should be able to stand 13 or maybe 14 absolute max .. run 12 absolute max to be safe is the general consensus ... someone correct me if i'm wrong.

[G0DF4Th3R]

if u run 12psi which is rougly 0.8 bar you should be having quite a bit of fun. though u should go for a EBC which will ultimately hold boost better.

13-14 psi is ok with an R33 but i wouldnt go near there without an FMIC

[dojobi]

I'm running 14psi on mine via a bleeder and it hasn't blown up yet. It's been like this for over 6 months now too.

I still recommend an EBC though. I'm just a cheap arse.

[G0DF4Th3R]

MIC33R, im a cheap arse too so mind telling me what bleeder u using? heard some work better than others

[dojobi]

I use a GFB bleeder (I think it's called the Atomic Boost Controller or something along those lines). My mechanic is a GFB reseller so he gets their parts quite cheaply. I've forgotten the price, but it was around $60 or slightly more. I was going to make my own, but at that price the parts would have been more. I really like GFB products as they're cheap and do the job.

[dojobi]

Actually one other thing. I don't think the GFB one is double gated (is that what they call it?), so it just bleeds instantly meaning it isn't like an EBC and holds the wastegate shut until it reaches the preset level. Some bleeders can do this.

[G0DF4Th3R]

thanks for the info MIC33R

yeah ive heard that GFB bleeders are better than the others (Turbo XS, Turbosmart) but so far its been thru word of mouth.

[TTT]

My TurboXS one works fine on my R32 GTST.

I've set it to 13psi and on a cold night, when I mash my foot, it will spike to about 14psi then settle back down to 13psi..

I bought it 2nd hand for $50.

new they are about $110.. (retail)

the GFB atomic is also $110 (retail). unless you know someone..

[dojobi]

$110 eh? My mechanic must have given me a REALLY good price then.

[TTT]

yeh you got it cheap..

details for those that haven't seen the GFB boost controller.

Quote from GFB..

"GFB puts the key to boost control in YOUR hands! All turbocharged vehicles utilize some form of factory boost control, most of which display a tendency to be conservative in allowing the boost to build up, and then taper away noticeably toward redline (see diagram). A GFB Boost Controller however, not only allows quick and easy boost level adjustment, but it can also reduce the boost threshold (the RPM at which boost starts to rise) and maintain a rock-steady upper limit.

The simple explanation is - more power, earlier and longer!

$109 including GST (Part No. 3001)"

[R31 POWER]

My RB20det runs 12psi at the manifold and I don't have a bleeder but does have stock dump/front pipe,2 1/2inch zorst,pod and no cooler:rolleyes: .Don't flame me for no cooler as a supra front mount is going in soon:uh-huh:

[TTT]

would this supra cooler be my one?

[Guest Boxhead]

umm the GFB atomic whatever bleed valve is what i have in myn set for 12, i was told by dyno tuner is that if you keep the lines shorter, you will get less spike, and on teh dyno, we set it for 12psi, and it spiked to 12.3 at max i think.....

so my advice is keep lines short....

secondly, i think autobarn sell it for like $69 or 70 but its not that dear...

[R31 POWER]

GTST would this supra cooler be my one?

No this one I got for free coz it was twisted and had lots of damage,but it's all welded up and untwisted.

[rev210]

bleeder systems don't stack up very well against electronic boost control. The boost is quicker to build and more stable on the ebc.

I would love to turf the turbosmart bleeder valve.

[TTT]

Originally posted by rev210

bleeder systems don't stack up very well against electronic boost control. The boost is quicker to build and more stable on the ebc.

I would love to turf the turbosmart bleeder valve.

no-one is argueing against that..

I just couldn't justify that much cash

[Guest RedLineGTR]

$100compiared to a 500unit....on bleed valves check it on a dyno and adjust it so it dosent spike anyhigher than you would like it to. All bleed valves spike no doubt

[rev210]

I'd argue my time would drop 2 tenths with a good ebc over what I have atm. They are less than $400 to buy.