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what is this hole for on my turbo?

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Old 12-17-2002, 04:45 AM
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Default what is this hole for on my turbo?

i'm pretty sure the hole is to connect a vaccum hose to the wastegate, but just wanna be 100% sure

Old 12-17-2002, 05:25 AM
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Default Re: what is this hole for on my turbo? (rbf351)

That would be my 99.99% sure guess as well...
Old 12-17-2002, 05:28 AM
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Default Re: what is this hole for on my turbo? (fsp31)

i was thinking about sealing up the hole and running the wastegate from the intake manifold, does that sound better?
Old 12-17-2002, 05:37 AM
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Default Re: what is this hole for on my turbo? (rbf351)

Its usually used as a boost source for a boost controller
Old 12-17-2002, 05:41 AM
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Default Re: what is this hole for on my turbo? (MiraiZ)

how come the company i got the revhard kit from said to connect that to the side port on the tial wastegate?
Old 12-17-2002, 05:44 AM
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Default Re: what is this hole for on my turbo? (rbf351)

I would guess that they said that becausse it is the port for the wastegate. The closer it is to the compressor th faster esponce the wastegate has.

-Dustin
Old 12-17-2002, 05:45 AM
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Default Re: what is this hole for on my turbo? (rbf351)

because a revhard kit doest come with a boost controller. you can hook it up to your wastegate, but you will see less boost than if you were to use a vaccum source on your IM. i'd say plug it for now
Old 12-17-2002, 06:10 AM
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Default Re: what is this hole for on my turbo? (TurboedGSR)

From my personal experience, I would run your wastegate vac source off the turbo as shown in the pic.

Reason being, a few months back, I had my wastegate tapped off the Intake Manifold, well low and behold, i couldnt figure out why i was only boosting 4 psi instead of 6. well i always thought it was the delta gate wastegate since i was getting atleast some boost.....

Turns out, i tore a rubber coupling and it was leaking boost, meanwhile spooling the **** out of my turbo. The wastegate never opened because it didnt see the 6 psi....

Moral of the story, Its safer to run the wastegate vac source off the side of the turbo.
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