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Aac Valve Plumbing, plumb to Boost side or Atmosphere

LJ RB
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LJ RB Rookie

LJ RB

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Hi, I have an Modded RB25 in an LJ Torana and have aquestion regarding the AAC valve, I have an aftermarket Plenum and not sure of the correct or factory plumbing for the AAC Valve, is the intake pipe to the valve supposed to be to atmosphere pre-Turbo or should it be plumbed pre-throttle body on the boost side? Thanks 

20160719_204039.jpg

20160719_204039.jpg

Edited by LJ RB
HarrisRacing Proficient

HarrisRacing

Posted
Posted

If single TB plenum just find a location to "jump around" the throttle body. This will be pressurized under boost and of course the leg from the plenum (vacuum side) will be under vacuum so plan your hose accordingly. My Hypertune came with an adapter that actually could have been threaded directly to the manifold on the vacuum side (but I just used some pretty thick silicone hose I had).

 

LJ RB Rookie

LJ RB

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Ok thanks for that, yes it is a single throttle body. The Value wasn't plumbed when I Bought it, it was just vented to Atmosphere and I wasn't sure if it would leak boost back through it when under pressure. I will plumb it back before the throttle body in the intercooler pipe.

Cheers

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
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pressure side so the valve doesn't essentially have pressure against it.. pressure in the plenum and pressure on the coldside pipe would have the same +ve pressure on boost

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