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how to hook up all the vacuum lines.......

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Old 06-14-2002, 07:59 AM
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Default how to hook up all the vacuum lines.......

i just bought a used drag 3 kit.......
are all the vacuum lines gonna go to one junction?
where does the
BOV vaccuum goes
FMU vacuum goes
the one on the turbo..vacuum goes
and the 2 vacuum on the wastegate....are they all gonna get connected to
the vacuum line on the intake manifold??

pics would help too..........

Thanks
Old 06-14-2002, 09:53 AM
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Default Re: how to hook up all the vacuum lines....... (skunk2allmotorSi)

BOV and FMU boost signal should be connected to a source on the manifold(FPR, or cruise control, etc).
The fitting on the compressor side of the turbo can go to the side port of the wastegate.
The top of the wastegate can be left open, unless you run an electronig boost controller.
Old 06-14-2002, 03:18 PM
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Default Re: how to hook up all the vacuum lines....... (inspyral)

Exquisitely put!
Old 06-14-2002, 04:17 PM
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Default Re: how to hook up all the vacuum lines....... (GTM)

My hks BOV has two ports.

Is the top for vac/boost and the bottom boost only (from compressor)?
Old 06-14-2002, 04:30 PM
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Default Re: how to hook up all the vacuum lines....... (niedejb)

My hks BOV has two ports.

Is the top for vac/boost and the bottom boost only (from compressor)?
The top port isn't needed unless you're running an EBC, so if you're relying on just the wastegate to control boost, the top port can stay open to the atmosphere. The bottom port needs to see a boost signal. Some people like to run the boost signal from the side port of the w/g to manifold pressure. This lets the w/g open slower and thus gives you more boost, with an increased chance of overboosting or boost creep. Running the signal from the comrpessor housing is more reliable and you'll have less of a chance of overboosting, but the w/g opens sooner and may not hold the same amount of boost as it would if it were connected to manifold pressure. Try both, see which one you like better.
Old 06-14-2002, 08:47 PM
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Default Re: how to hook up all the vacuum lines....... (inspyral)

i'm gonna put a DIY manual boost controller on it...
where do i put that?
thanks...that really helped..inspyral
Old 06-14-2002, 09:51 PM
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Default Re: how to hook up all the vacuum lines....... (skunk2allmotorSi)

i'm gonna put a DIY manual boost controller on it...
where do i put that?
thanks...that really helped..inspyral
If the MBC you're using is the kind that restricts the w/g's boost signal in order to raise boost levels, then it would go inline(in series) with the w/g's boost signal(to the side port). So it would go something like: compressor or manifold pressure==>MBC==>side port of w/g. The top port on the w/g would still be unused.
Old 06-14-2002, 11:05 PM
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Default Re: how to hook up all the vacuum lines....... (inspyral)

My hks BOV has two ports.

Is the top for vac/boost and the bottom boost only (from compressor)?
The top port isn't needed unless you're running an EBC, so if you're relying on just the wastegate to control boost, the top port can stay open to the atmosphere. The bottom port needs to see a boost signal. Some people like to run the boost signal from the side port of the w/g to manifold pressure. This lets the w/g open slower and thus gives you more boost, with an increased chance of overboosting or boost creep. Running the signal from the comrpessor housing is more reliable and you'll have less of a chance of overboosting, but the w/g opens sooner and may not hold the same amount of boost as it would if it were connected to manifold pressure. Try both, see which one you like better.
he was talking about his bov not wg!!
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