S13 sr20det vac lines- Will this work, if not then why? (Mucho searcho) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

5280VertDET · 11-10-2013, 06:37 PM

After many searches, on multiple forums, over the last 3 days and reading the FSM finding what I thought was what would work but I am confused and stuck.

Many "vac line" threads are dead ends (w/dead links and pictures) or "oh, never mind I fixed it (and no solution is posted)" or they don't include all the components below. The FSM is nice for factory setup, but useless to me for this set up. I feel like this is a very common setup and hopefully a solution will come and someone can use this in the future!

Heres the run down:
S13 Redtop
Isis Manual Boost Controller (has one in and 3 "outs")
Boost Gauge
No Emissions Canister
CX Racing "Greddy" style BOV
Stock T25

My free time is limited, so I will be hooking up the vac lines and hopefully will be able to start it up by turkey day, so bare with me...

Word version:
FPR to Upper, Smaller, Left Throttle Body Vacuum in.
WasteGate to MBC "in"
MBC "out #1" to Upper, Larger, Right Throttle Body Vacuum in.
MBC "out #2" to cabin Boost Gauge.
BOV vacuum line to Lower, Left Throttle Body Vacuum.

Here's the Picture:

So, almighty engine wizards, can someone confirm or offer a solution to this setup?

Thanks!

Dboyizmlg · 11-10-2013, 07:17 PM

That is the improper set-up!

The upper right nipple goes to BOV, you can tee off this also for the boost gauge.

The bottom left is to be capped off.

You need to make a nipple fitting on your intercooler pipe, (hot pipe preferably). The. You have you're MBC in between the actuator, and hot pipe fitting (boost source).

Make a boost source!

5280VertDET · 11-10-2013, 07:50 PM

Quote:

Originally Posted by Dboyizmlg

That is the improper set-up!

The upper right nipple goes to BOV, you can tee off this also for the boost gauge.

The bottom left is to be capped off.

You need to make a nipple fitting on your intercooler pipe, (hot pipe preferably). The. You have you're MBC in between the actuator, and hot pipe fitting (boost source).

Make a boost source!

Thanks, so...

Upper left to FPR
Upper right to BOV & T'd to the BG
MBC from WG to nipple on hot pipe?

Is there a particular reason to cap the lower left nipple?

Edit: also, is there a reason why I can't read boost from the MBC?

Dboyizmlg · 11-10-2013, 08:55 PM

Quote:

Originally Posted by 5280VertDET

Thanks, so...

Upper left to FPR
Upper right to BOV & T'd to the BG
MBC from WG to nipple on hot pipe?

Is there a particular reason to cap the lower left nipple?

Edit: also, is there a reason why I can't read boost from the MBC?

Yes!
Correcto my friend.

Dboyizmlg · 11-10-2013, 08:58 PM

The lower left is used for charcoal canister. Since you don't have one, its not needed. Just cap it off.

That lower left nipple is not a boost source, you cannot use it like one.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-10-2013, 06:37 PM	#1
5280VertDET Nissanaholic! Join Date: Aug 2013 Location: Denver Age: 37 Posts: 2,052 Trader Rating: (14) Feedback Score: 14 reviews	S13 sr20det vac lines- Will this work, if not then why? (Mucho searcho) After many searches, on multiple forums, over the last 3 days and reading the FSM finding what I thought was what would work but I am confused and stuck. Many "vac line" threads are dead ends (w/dead links and pictures) or "oh, never mind I fixed it (and no solution is posted)" or they don't include all the components below. The FSM is nice for factory setup, but useless to me for this set up. I feel like this is a very common setup and hopefully a solution will come and someone can use this in the future! Heres the run down: S13 Redtop Isis Manual Boost Controller (has one in and 3 "outs") Boost Gauge No Emissions Canister CX Racing "Greddy" style BOV Stock T25 My free time is limited, so I will be hooking up the vac lines and hopefully will be able to start it up by turkey day, so bare with me... Word version: FPR to Upper, Smaller, Left Throttle Body Vacuum in. WasteGate to MBC "in" MBC "out #1" to Upper, Larger, Right Throttle Body Vacuum in. MBC "out #2" to cabin Boost Gauge. BOV vacuum line to Lower, Left Throttle Body Vacuum. Here's the Picture: So, almighty engine wizards, can someone confirm or offer a solution to this setup? Thanks! __________________ S13 Vert \| SR \| PE1420 \| 5-Speed \| 15x9.5 - 0 \|

11-10-2013, 07:17 PM	#2
Dboyizmlg Nissanaholic! Join Date: Aug 2011 Location: SoCal (I.E.), San Berdino, Colton, Redlands Posts: 1,665 Trader Rating: (17) Feedback Score: 17 reviews	That is the improper set-up! The upper right nipple goes to BOV, you can tee off this also for the boost gauge. The bottom left is to be capped off. You need to make a nipple fitting on your intercooler pipe, (hot pipe preferably). The. You have you're MBC in between the actuator, and hot pipe fitting (boost source). Make a boost source!

11-10-2013, 08:58 PM	#5
Dboyizmlg Nissanaholic! Join Date: Aug 2011 Location: SoCal (I.E.), San Berdino, Colton, Redlands Posts: 1,665 Trader Rating: (17) Feedback Score: 17 reviews	The lower left is used for charcoal canister. Since you don't have one, its not needed. Just cap it off. That lower left nipple is not a boost source, you cannot use it like one.