wipe Posted August 25, 2009 Share Posted August 25, 2009 hi guys, just wondering if someone can help me identify what a hose does and what i can do with it when i put in a pod filter. the hose i am talking about is connected to the right hand side of the filter box and apparently connects to some kind of sensor according to one of the guys at autobarn who had a quick look for me. i will try to get some pictures to help tomorrow or next monday. Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/ Share on other sites More sharing options...
4 door love Posted August 25, 2009 Share Posted August 25, 2009 what engine? Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788120 Share on other sites More sharing options...
wipe Posted August 25, 2009 Author Share Posted August 25, 2009 what engine? rb25de Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788137 Share on other sites More sharing options...
N-DAWG Posted August 25, 2009 Share Posted August 25, 2009 (edited) I believe I know which one you're talking about. It's a vacuum line. There's a vacuum assembly towards the back of the engine, two vacuum lines run together past near the power steering reservoir, one of them goes into the airbox, the other one keeps going down to the charcoal canister. The one that goes to the airbox just needs to be tucked away when you remove the box to fit a pod. Don't block this vacuum line! This vacuum line ultimately connects to the variable air intake control actuator in the intake plenum on RB25DE NEO's. Basically when you look at the intake plenum where the Y piece connects to it, you'll see the rod for the solenoid. Inside the middle of the plenum is a butterfly valve that partially separates the intake into 2 parts. At around 4700RPM this valve in the plenum opens completely. This is to assist with response in the low RPM on the N/A RB25DE NEO Motors. If this vacuum line is blocked, this valve won't function properly and power will be lost. Tucking it out of the way and removing the airbox for fitment of the pod won't effect anything, so long as the vacuum line isn't blocked. Edited August 25, 2009 by N-DAWG Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788198 Share on other sites More sharing options...
N-DAWG Posted August 25, 2009 Share Posted August 25, 2009 To give a bit of a visual, courtesy of the Nissan R34 Maintenance Manual: Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788226 Share on other sites More sharing options...
wipe Posted August 25, 2009 Author Share Posted August 25, 2009 I believe I know which one you're talking about. It's a vacuum line. There's a vacuum assembly towards the back of the engine, two vacuum lines run together past near the power steering reservoir, one of them goes into the airbox, the other one keeps going down to the charcoal canister. The one that goes to the airbox just needs to be tucked away when you remove the box to fit a pod. Don't block this vacuum line! This vacuum line ultimately connects to the variable valve solenoid in the intake plenum on RB25DE NEO's. Basically when you look at the intake plenum where the Y piece connects to it, you'll see the rod for the solenoid. Inside the middle of the plenum is a butterfly valve that partially separates the intake into 2 parts. At around 4700RPM this valve in the plenum opens completely. This is to assist with response in the low RPM on the N/A RB25DE NEO Motors. If this vacuum line is blocked, this valve won't function properly and power will be lost. Tucking it out of the way and removing the airbox for fitment of the pod won't effect anything, so long as the vacuum line isn't blocked. thank you for the reply. so if i understand correctly as long as i do not block it in anyway i do not have to connect it to anything once i fit the pod? Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788240 Share on other sites More sharing options...
N-DAWG Posted August 25, 2009 Share Posted August 25, 2009 thank you for the reply.so if i understand correctly as long as i do not block it in anyway i do not have to connect it to anything once i fit the pod? Correcto Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788244 Share on other sites More sharing options...
wipe Posted August 25, 2009 Author Share Posted August 25, 2009 instead of tucking it away would it be possible to remove the hose at the other end or would it no longer work correctly? Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788261 Share on other sites More sharing options...
AYW550 Posted August 25, 2009 Share Posted August 25, 2009 instead of tucking it away would it be possible to remove the hose at the other end or would it no longer work correctly? the shop who installed my pod removed the entire hose and ive had no ill effects Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4788726 Share on other sites More sharing options...
wipe Posted August 27, 2009 Author Share Posted August 27, 2009 thanks for all the help, i can now go through with the modification Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-4792657 Share on other sites More sharing options...
bra0063 Posted October 13, 2011 Share Posted October 13, 2011 I believe I know which one you're talking about. It's a vacuum line. There's a vacuum assembly towards the back of the engine, two vacuum lines run together past near the power steering reservoir, one of them goes into the airbox, the other one keeps going down to the charcoal canister. The one that goes to the airbox just needs to be tucked away when you remove the box to fit a pod. Don't block this vacuum line! This vacuum line ultimately connects to the variable air intake control actuator in the intake plenum on RB25DE NEO's. Basically when you look at the intake plenum where the Y piece connects to it, you'll see the rod for the solenoid. Inside the middle of the plenum is a butterfly valve that partially separates the intake into 2 parts. At around 4700RPM this valve in the plenum opens completely. This is to assist with response in the low RPM on the N/A RB25DE NEO Motors. If this vacuum line is blocked, this valve won't function properly and power will be lost. Tucking it out of the way and removing the airbox for fitment of the pod won't effect anything, so long as the vacuum line isn't blocked. what number is it on the diagram? Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-6060365 Share on other sites More sharing options...
N-DAWG Posted October 22, 2011 Share Posted October 22, 2011 what number is it on the diagram? 7 - it runs directly into the box Link to comment https://www.sau.com.au/forums/topic/285037-r34-pod-modification/#findComment-6074601 Share on other sites More sharing options...
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