Jump to content
SAU Community

Recommended Posts

45 minutes ago, adam wicks said:

IMG_1504062381.823913.jpg

Also this has 2 spots for vac hoses do they both go to the manifold ?

And this is a solenoid that is used to trigger (I think) the vacuum to the charcoal canister when the (factory) ECU determines that it is OK to do it.  So, no, both do not go to the manifold.  On the stocker, one would go to a vacuum source and the other snakes off towards the front of the car.

5 hours ago, adam wicks said:

 


Is it for vac?

Yes, but not in the way that you're thinking.  That pipe is visible there, and on the other side of the timing cover.  On the inlet side, it is connected to the plenum.  On the other side it is connected to the suction port of the charcoal canister.  It provides the suck that purges the canister (and fuel tank) into the engine.

The solenoid valve you posted earlier is also connected to both the plenum and the charcoal canister.  It is the switch that makes the valve on the charcoal canister open.  There's no flow in that line, just a vacuum signal.

All the plenum vacuum you could ever want is available off the many vac ports they added down the back end of yoru new one.

Did you decide to put this plenum on without making notes on how the original setup was plumbed up?

  • Like 1
Yes, but not in the way that you're thinking.  That pipe is visible there, and on the other side of the timing cover.  On the inlet side, it is connected to the plenum.  On the other side it is connected to the suction port of the charcoal canister.  It provides the suck that purges the canister (and fuel tank) into the engine.
The solenoid valve you posted earlier is also connected to both the plenum and the charcoal canister.  It is the switch that makes the valve on the charcoal canister open.  There's no flow in that line, just a vacuum signal.
All the plenum vacuum you could ever want is available off the many vac ports they added down the back end of yoru new one.
Did you decide to put this plenum on without making notes on how the original setup was plumbed up?


I work shift work and every time I started pulling the standard stuff off I got called to work for 12 hour shifts so I lost track and that's been the problem ahha
On 8/30/2017 at 6:55 PM, adam wicks said:

 


It's not for gain it's perparing for top mount turbo setup coming soon

 

Ah yes, but I have a top mount neo and do not need this manifold :P

That said, you're in it, and it's on the car, so may as well finish it now.

  • Like 1
  • Haha 1

Sorry, but that makes no sense.  There is more than one way I can read your question and none of them make sense.

1. Are you talking about the small hose on the barb on the intercooler return pipe just before the blue silicon joiner?  If so, that is not stock, it has been put there by somebody else, so it could be for anything.  It could be connected to that boost controller we see behind the PS reservoir.  It could be for a boost gauge.

2. Are you talking about the boost controller in the background?  If you are, one side (the input side) must come from the turbo outlet or intercooler hot pipe.  The other side goes to the wastegate actuator.

That one (the barb, near the blue joiner) is stock on a R34 neo, it does indeed go to the power steering. It's used for speed sensitive power steering (somehow) and disconnecting it does result in some VERY heavy steering.. as well as a boost leak).

It runs from the PS to the charge pipe. It doesn't run to the plenum, so it'll go back to somewhere on your intercooler piping. If this doesn't exist, well you can block the hose if you like heavy steering all the time, or get a fitting put on your charge pipes.

  • Like 1
That one (the barb, near the blue joiner) is stock on a R34 neo, it does indeed go to the power steering. It's used for speed sensitive power steering (somehow) and disconnecting it does result in some VERY heavy steering.. as well as a boost leak).
It runs from the PS to the charge pipe. It doesn't run to the plenum, so it'll go back to somewhere on your intercooler piping. If this doesn't exist, well you can block the hose if you like heavy steering all the time, or get a fitting put on your charge pipes.



Yes the barb is factory on the 34s thank you glad you could understand haha

Thanks so don't delete it just put it back into the cooler pipes no problem thanks for explaining it to I wasn't sure what it was for

Nuh it's a power steering air control valve, it's only for bumping up idle when you turn the steering wheel. Mine's removed when I got a replacement pressure hose made up

Just block up the fitting that goes back to the plenum and the IC pipe

  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Brooooo Please send ABS control unit schematic Please! R33 gts25t ABS (Its two plug ecu, black and white) wire colors possible? [email protected]
    • Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
    • Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
×
×
  • Create New...