aac valve help

Discuss the RB20, RB25 and RB26 series engines.
alysesparents
Posts: 33
Joined: Sat Nov 04, 2006 4:45 pm
Car: 91 240

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hey i am in the end of doing a intake manifold swap and i am haveing trouble figureing out how to route the aac valve vacuum lines so the car will idle and run rite any pictures or diagrams would help alot i tried to look at pictures but they arent clear enough for me to figure it out thanks you guys


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Coolwhip
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Thanks to TomTomTuning

Hope it helps

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Spazz
Posts: 210
Joined: Tue Sep 07, 2004 4:40 am

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is that the ebay knockoff manifold?

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matafied
Posts: 423
Joined: Mon Jan 08, 2007 8:15 am
Car: 1989 240 rb25det 1992 240 rb25det

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this might help, page 6 and 9 has the diagrams i think

zerothread?id=220376

alysesparents
Posts: 33
Joined: Sat Nov 04, 2006 4:45 pm
Car: 91 240

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thank you for the help got the aac problem solved and yes it is a ebay knockoff but now it seems like under full throttle it dosent pull like it should do you think that I need to re gap my my spark plugs or get a hotter plug because the air is flowing better than before they are currently gapped at .30thanks

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krayton
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wheres does this guy go?

alysesparents
Posts: 33
Joined: Sat Nov 04, 2006 4:45 pm
Car: 91 240

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it bolted under my manifold in the center

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krayton
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meant the open plug. does it just go to intake?

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matafied
Posts: 423
Joined: Mon Jan 08, 2007 8:15 am
Car: 1989 240 rb25det 1992 240 rb25det

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Yea ive been wondering about this my self, the greddy instructions are kinda unclear I have mine blocked off for now but im not driving it yet. The greddy kit came with a hose adapter to extend the hose to the front; I think your suppose to attach it to your intake in front of the throttle body, thats how it set up on the stock mani. idk anyone know for sure??man i wish i could read Japanese

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Coolwhip
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that hose goes to the cold pipe (in front of the throttle body) its there to allow air to bypass a closed throttle plate in order to correct idle.

Sil240
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Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

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Ohhhh.

So the RB25 Air regulator is built into the AAC valve???

The RB20 Has a seperate air regulator, that looks like the neck of a soda bottle.

Yup your right I was looking at the hose routing for the AAC and Air regulator for the RB20 and it does go BEFORE the Throttle body.


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