ilikebigbutts

i've been reading and reading lately about boosted setups and it seems a good amount of people had their engines blown up by boost creep...well, how do i avoid such a thing?i am planning on running external wg.Is the design of the manifold critical to creep from happening?thanx in advance.

ILBB

93supercoupe

Yeah, when a wastegate is positioned on a specific runner, it seems to have the most creep, so u want a wastegate outlet close or on the collector of all 4 runners.

ilikebigbutts

so a wastegate positioned in the middle of the collectors would be the ideal place?

ILBB

B18C1CYA

Dual wastegates is the way to go for rock solid boost

dunkd

an EMS with boost cut...

and stear clear of the guy that posted above me, he's definetley a boost creep

ilikebigbutts

^^^uber doesnt have boost cut right?and crome does?

HNLV

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C1CYA &raquo;</TD></TR><TR><TD CLASS="quote">Dual wastegates is the way to go for rock solid boost </TD></TR></TABLE>
must be drunk

u only need a dual wastegate setup for a divided manifold

ForceThis!

one wastgate per runner. problem solved.

Snafubmx234

You want your wastegate positioned in a way that it exhaust gases can easily flow out of it. Also, you want to properly size your wastegate with your desired power levels.

Look at BMC's S2000 turbo manifold. That's the "ideal" way to prevent boost creep.

JDM turbo DC

iTrader: (6)

just make sure you have the wastegate positioned on the manifold to "bleed exhaust" from all four runners. another thing i know that makes a difference is run a bigger wastegate (44mm) for low boost applications and run a smaller wastegates (38mm) for high boost applications. the bigger gate would bleed out more exhaust and a smaller gate can control less exhaust from being bled.

B18C1CYA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HNLV &raquo;</TD></TR><TR><TD CLASS="quote">
must be drunk

u only need a dual wastegate setup for a divided manifold</TD></TR></TABLE>

Not true

blackeg

uber does have boost cut, ive been using it for a long time now

JDMs1eeper

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C1CYA &raquo;</TD></TR><TR><TD CLASS="quote">Dual wastegates is the way to go for rock solid boost </TD></TR></TABLE>

myjdmsucks

i agree with snafu
i remember seeing a hytech setup and i was blown away



also i seen wastegates off the turbine housing absolute no creep
i cant seem to find a pic

BlackCRX

cheap spring loaded style MBC's can also cause spikes and creeps

93supercoupe

Supposedly, boost creep is the exhaust gasses not being able to make the hard angles to go out the wastegate, so the less of a bend, the less boost creep.

ilikebigbutts

thanks alot for the responses guys

ILBB

vtec.dc2

design of manifold matters so does good boost controller and good wastegate.