Going Bareblock
06-08-2005 | 08:20 PM
#1
Thread Starter
Member
Joined: Dec 2003
Posts: 52
can anyone tell me whaere this vac nipple goes or does it get capped.
Also on the front and back of the dinamic chmber there are three vac nipples. which ones get capped? I know that the ones in the front have something to do with omp.
Also on the front and back of the dinamic chmber there are three vac nipples. which ones get capped? I know that the ones in the front have something to do with omp.
06-08-2005 | 08:33 PM
#2
Senior Member
Joined: Oct 2003
Posts: 3,502
From: Canada
That 1st vac nipple you can use for whatever you want, it's closest to the primary port, so it's the type of thing you'd use for a MAP sensor
You don't have a vacuum rack anymore so you can cap it, or use it for what you need. It used to goto the vac-rack.
**** it's been a long time since I've looked at stock 6port manifolds
I see you are premixing
Cap all three on the dynamic chamber, and please cap (or make sure you don't have any vacuum leak) at the cold start solenoid flange you have exposed on your upper intake runners.
Other than that, nice work mister.
Is that big hole in the 1st pic going into your primary fuel rail?
You don't have a vacuum rack anymore so you can cap it, or use it for what you need. It used to goto the vac-rack.
**** it's been a long time since I've looked at stock 6port manifolds
I see you are premixing
Cap all three on the dynamic chamber, and please cap (or make sure you don't have any vacuum leak) at the cold start solenoid flange you have exposed on your upper intake runners.
Other than that, nice work mister.
Is that big hole in the 1st pic going into your primary fuel rail?
06-09-2005 | 08:11 AM
#3
Thread Starter
Member
Joined: Dec 2003
Posts: 52
ok how many vac lines should I have when done this is the first time I do this.
That is a hole in the primary fuel line and no it will not stay that way.
Anyway, Thanks alot man.
That 1st vac nipple you can use for whatever you want, it's closest to the primary port, so it's the type of thing you'd use for a MAP sensor
You don't have a vacuum rack anymore so you can cap it, or use it for what you need. It used to goto the vac-rack.
**** it's been a long time since I've looked at stock 6port manifolds
I see you are premixing
Cap all three on the dynamic chamber, and please cap (or make sure you don't have any vacuum leak) at the cold start solenoid flange you have exposed on your upper intake runners.
Other than that, nice work mister.
Is that big hole in the 1st pic going into your primary fuel rail?
[/quote]
That is a hole in the primary fuel line and no it will not stay that way.
Anyway, Thanks alot man.
That 1st vac nipple you can use for whatever you want, it's closest to the primary port, so it's the type of thing you'd use for a MAP sensor
You don't have a vacuum rack anymore so you can cap it, or use it for what you need. It used to goto the vac-rack.
**** it's been a long time since I've looked at stock 6port manifolds
I see you are premixing
Cap all three on the dynamic chamber, and please cap (or make sure you don't have any vacuum leak) at the cold start solenoid flange you have exposed on your upper intake runners.
Other than that, nice work mister.
Is that big hole in the 1st pic going into your primary fuel rail?
[snapback]722990[/snapback]
[/quote]
06-09-2005 | 09:36 AM
#4
Senior Member
Joined: Oct 2003
Posts: 3,502
From: Canada
Well, you need a vacuum line for the FPR to somewhere that has consistant vacuum, so that 1st one in the pic would actually be a good canidate.
Other than that it depends what type of engine controller you are running. Are you using the stock EFI system or aftermarket?
My 6 port has hardly any vacuum lines, because I have an engine controller. I have one to the MAP, one to the FPR, and two to the distributor for the vacuum advance diaphragms (I'm not using the CAS like you have shown in your pic). Everything else is capped.
So what are you going to be using?
Other than that it depends what type of engine controller you are running. Are you using the stock EFI system or aftermarket?
My 6 port has hardly any vacuum lines, because I have an engine controller. I have one to the MAP, one to the FPR, and two to the distributor for the vacuum advance diaphragms (I'm not using the CAS like you have shown in your pic). Everything else is capped.
So what are you going to be using?
06-09-2005 | 09:39 PM
#5
Thread Starter
Member
Joined: Dec 2003
Posts: 52
I will be using stock efi. the car itself is an s4.
I'm asking because I don't want to make any mistakes.
This is the first time I tackle a job this big.
The crazy thing is that I have no-one that will help me with project and I Don't know any mechanics that I trust with my car.
[quote name='ColinRX7' date='Jun 9 2005, 05:36 AM']Well, you need a vacuum line for the FPR to somewhere that has consistant vacuum, so that 1st one in the pic would actually be a good canidate.
Other than that it depends what type of engine controller you are running. Are you using the stock EFI system or aftermarket?
My 6 port has hardly any vacuum lines, because I have an engine controller. I have one to the MAP, one to the FPR, and two to the distributor for the vacuum advance diaphragms (I'm not using the CAS like you have shown in your pic). Everything else is capped.
So what are you going to be using?
[/quote]
I'm asking because I don't want to make any mistakes.
This is the first time I tackle a job this big.
The crazy thing is that I have no-one that will help me with project and I Don't know any mechanics that I trust with my car.
[quote name='ColinRX7' date='Jun 9 2005, 05:36 AM']Well, you need a vacuum line for the FPR to somewhere that has consistant vacuum, so that 1st one in the pic would actually be a good canidate.
Other than that it depends what type of engine controller you are running. Are you using the stock EFI system or aftermarket?
My 6 port has hardly any vacuum lines, because I have an engine controller. I have one to the MAP, one to the FPR, and two to the distributor for the vacuum advance diaphragms (I'm not using the CAS like you have shown in your pic). Everything else is capped.
So what are you going to be using?
[snapback]723238[/snapback]
[/quote]
06-10-2005 | 09:59 AM
#9
Senior Member
Joined: Oct 2003
Posts: 3,502
From: Canada
I made a mistake, that one nipple you were talking about is to help fuel atomization at lower rpms... Connect that to the dynamic chamber
Here's a QUOTE from the FAQ
Here's a QUOTE from the FAQ
You cap everything but the **** you have kept, use the vacuum diagram to find out where those things got their vacuum source before, and just run a vacuum line directly to that source. On NA there is a line going from the LIM between the primary injectors, up to the dynamic chamber, you keep this as it is supposed to improve fuel atomization at low rpms. You run your FPR straight to the back of the dynamic chamber, by the BACV and AWS solenoid theres a nipple. Then you take the boost sensor and run it directly to the UIM, near the junction between the UIM and LIM... it's right in the center on the side facing the passenger side of the engine bay. Cap the rest. It's that simple.
06-10-2005 | 10:15 AM
#10
Senior Member
Joined: Oct 2003
Posts: 3,502
From: Canada
Since you are premixing, those nipples for the oil metering injection are constant vacuum sources, so you can use those instead of routing to the back of the dynamic chamber, etc...
This setup will work for you
Incase you are unsure, the boost sensor is the little black box with a vacuum line mounted on the passenger side strut tower. There is a little "pill" inside that vacuum line for better vacuum response reading, so since you are a stock EFI guy, I don't know if it will affect your idling/throttle response (if you replace it with a pretty new vacuum line. Just keep that in mind.
This setup will work for you
Incase you are unsure, the boost sensor is the little black box with a vacuum line mounted on the passenger side strut tower. There is a little "pill" inside that vacuum line for better vacuum response reading, so since you are a stock EFI guy, I don't know if it will affect your idling/throttle response (if you replace it with a pretty new vacuum line. Just keep that in mind.