2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

TURBO GUYS!!!! wastegate plumbing...

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Old Aug 9, 2011 | 05:39 PM
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TURBO GUYS!!!! wastegate plumbing...

My turbo builder didn't put a nipple fitting on the compressor housing for the wastegate to hook up to...

I've been told I can just drill and tap the intercooler piping on the turbo side since its pressureized as well and put a nipple fitting there and run that to the wastegate so it will open.

Is that true??? Can I do this??

Drill/tap compressor housing or drill/tap intercooler piping???

Thanks all.
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Old Aug 9, 2011 | 07:45 PM
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Drill / tap compressor housing.
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Old Aug 9, 2011 | 08:40 PM
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I use a port off the intake manifold...
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Old Aug 9, 2011 | 09:23 PM
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It doesn't matter where it is so long as it sees positive manifold pressure. You do understand how a wastegate works correct?
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Old Aug 9, 2011 | 09:57 PM
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The compressor housing is usually the best spot for thermal efficiency and limiting the boost to a set value, although response is a little slower. You can use the intake plenum if boost response (and torque) is more important than heat control (detonation). You can use the intercooler plumbing as a compromise between the two, but make sure you place the nipple between the intercooler and the throttle body.
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Old Aug 11, 2011 | 12:48 AM
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Yes, I know how it works. I've just been reading this and that from people. I'm going to the intercooler piping for pressure source.


Mods can close. Thanks all.
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Old Aug 11, 2011 | 12:50 AM
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Originally Posted by Evil Aviator
The compressor housing is usually the best spot for thermal efficiency and limiting the boost to a set value, although response is a little slower. You can use the intake plenum if boost response (and torque) is more important than heat control (detonation). You can use the intercooler plumbing as a compromise between the two, but make sure you place the nipple between the intercooler and the throttle body.

Hmmmm. I'm doing intercooler piping 8 1/2 inches from my compressor housing outlet.. That's before the intercooler. I've been told to do this..
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