VTCS to VICS swap on USDM NB2 - What exactly is needed for this swap?
#1
VTCS to VICS swap on USDM NB2 - What exactly is needed for this swap?
I decided to order a VICS manifold on ebay for around 75$, however it is missing what is labeled on the FSM as the "VICS Shutter Valve Actuator". The "VICS solenoid valve" appears to exist on my NB2 already, but the vacuum line is going to a different port on my existing VTCS manifold.
It looks like I will need to order an NB1 fuel rail, and that VICS shutter valve actuator as well. Is there a way to repurpose the VTCS vacuum switch as the VICS shutter valve on this manifold? Has anyone done this swap and documented exactly what is needed/what vacuum lines go where? As Reverants MS3 Basic has the ability to control VICS natively, I must be missing something if its this difficult to swap manifolds. I am on the verge of ordering a squaretop just to avoid the vacuum line routing alone.
Pic of the 99-00 FSM diagram
Pic of the 01-05 FSM for comparison
It looks like I will need to order an NB1 fuel rail, and that VICS shutter valve actuator as well. Is there a way to repurpose the VTCS vacuum switch as the VICS shutter valve on this manifold? Has anyone done this swap and documented exactly what is needed/what vacuum lines go where? As Reverants MS3 Basic has the ability to control VICS natively, I must be missing something if its this difficult to swap manifolds. I am on the verge of ordering a squaretop just to avoid the vacuum line routing alone.
Pic of the 99-00 FSM diagram
Pic of the 01-05 FSM for comparison
#2
I feel pretty dumb right now, after taking a second look at the diagram and my car it looks like I should have the equivalent of the VICS shutter valve, it is labeled as the VTCS shutter valve on the NB2 diagram. I went out to my car and found the vacuum valve under the throttle body. Is it really as simple as disconnecting that valve and re-attaching it to the VICS manifold? For reference, here is the VICS switch side of the intake that I got. It looks like I may be missing something else here. Also other photos of my manifold so you can tell what I am missing for VICs to work.
Last edited by HowPrayGame; 05-11-2019 at 10:17 PM.
#3
Re-posting this from previous VICS threads
Looks like I am missing the VICS Vacuum chamber as well, wonderful. At this rate I may as well order a squaretop due to the ever-expanding cost of additional parts
Here is VICS being added to a 97 for anyone unfortunate enough to try this swap.
https://www.miataturbo.net/diy-turbo...how-add-72249/
Looks like I am missing the VICS Vacuum chamber as well, wonderful. At this rate I may as well order a squaretop due to the ever-expanding cost of additional parts
Here is VICS being added to a 97 for anyone unfortunate enough to try this swap.
https://www.miataturbo.net/diy-turbo...how-add-72249/
Last edited by HowPrayGame; 05-11-2019 at 10:18 PM.
#4
Cpt. Slow
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You can use a VTCS actuator, in fact I prefer it because its all metal vs the plastic VICS barb. You’ll need to fabricate a squarish plate thick enough to drill/tap for m6 and have a few threads (1/4” or so), then bolt it to the manifold, and bolt the actuator to the bracket.
This is is the best pic I can get in a cramped space.
This is is the best pic I can get in a cramped space.
#5
Thank you for the pic & information Curly, I feel that is actually achievable with my limited fabrication skills. Is there an OEM style bracket I could possibly pull off a Junkyard NB1 that would work in a similar manner as well? Also, is the L Bracket containing the metal VTCS actuator OEM or was that fabricated as well?
#7
Cpt. Slow
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The electronic solenoid should just bolt up from the VCTS manifold onto the VICS.
The vacuum actuator from the VCTS manifold is too long, hence my plate to space it back. It attaches to the butterfly valves same as the vics, with a clip on the end to hold it on.
The vacuum actuator from the VCTS manifold is too long, hence my plate to space it back. It attaches to the butterfly valves same as the vics, with a clip on the end to hold it on.
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