were do the hoses go on the recercilation valve on the down pipe on the rb25det

Discuss the RB20, RB25 and RB26 series engines.
ilmyer15
Posts: 9
Joined: Thu Sep 11, 2008 7:12 pm
Car: nissan 240sx with RB25DET swap

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'''''''i cant find out wich vac goes on top and wich vac goes on the bottom of the waste gauge and i know the three vacs are the heater pipe vac and boost vac and the one that goes into the pipe that leads into the turbo and that comes off ... wich one goes were i have no clue because i got 3 cords i can put on the two prongs sticking out of the waste gauge one from the heater hose and one from the boost controller and one from the pipe that goes into my turbo'''''

''''O and in the green it says recurcil;ation valve i ment to say waste gauge to the downpipe'''''.



Modified by ilmyer15 at 8:17 PM 9/14/2008
Modified by ilmyer15 at 7:49 PM 9/15/2008


mott6904
Posts: 679
Joined: Tue Jan 30, 2007 2:50 pm
Car: rb20 big turbo big cams s13, 97 kouki, turbo audi a4,turbo busa

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I'm lost....Read your post...

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USMCgetsome
Posts: 2030
Joined: Wed Apr 14, 2004 7:38 pm
Car: OWN S13.5 RB25DET/2003 G35
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pick any available vacuum line and use the TOP NIPPLE on the wastegate only. You can leave the other bottom nipple open. you can cap it if you'd like. Also cap any other vacuum lines not used.

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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Depends on your wastegate and how it operates. The Tial gates operate by lifting the valve to allow air past the seat. Boost pressure from the boost controller is used to push against the bottom of a diaphragm to lift the pressure on the valve and allow it to open. If yours operates the same way, then the boost source only needs to be connected to the nipple labeled VAC#1. VAC#2 can be left open to atmosphere.


ilmyer15
Posts: 9
Joined: Thu Sep 11, 2008 7:12 pm
Car: nissan 240sx with RB25DET swap

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o aight man thanks alot o yea and i mean the waste gauge not the recucilation vavle like in the picture i mean to say waste gauge and my boost controler vavle it has three holes should i have the line run like in a line or sholud i have a L shaped pateren

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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I think there's usually an ON, COM, and OFF port. I can't remember which goes where for an EBC. Look up the instructions for your boost controller. It will tell you there.


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