R34 Pod Modification

[wipe]

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.

[4 door love]

what engine?

[wipe]

what engine?

rb25de

[N-DAWG]

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

[N-DAWG]

To give a bit of a visual, courtesy of the Nissan R34 Maintenance Manual:

[wipe]

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?

[N-DAWG]

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

[wipe]

instead of tucking it away would it be possible to remove the hose at the other end or would it no longer work correctly?

[AYW550]

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

[wipe]

thanks for all the help, i can now go through with the modification

[bra0063]

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?

[N-DAWG]

what number is it on the diagram?

7 - it runs directly into the box