Ultimate Air Manifold System (DIY) – GX 460 470 or 5th Gen Onboard Air

Ultimate Air Manifold System (DIY) – GX 460 or 5th Gen Air Manifold Build

In this video we’re wrapping up the series on my onboard air system build out with this video on the onboard air manifold. This system will work on GX 460, GX 470 or 5th generation 4 runner and costs a bit under $350 including the compressor and mounting tray. Enjoy!

Smittybilt Mod instructions and wiring diagram: https://www.cinemastersind.com/downloads/SmittyBiltMod.pdf

PowerTrays:
https://www.powertrays.com/products/blank-lowpro-powertray-4runner-fj-cruiser-gx

Here's a list of the parts I used to make the SmittyBilt pressure switch Mod (Attempt at your own risk):

UPDATE: Using the 2780 for a year now we've realized that it's a bit under powered for our set-up. No problem getting to 35PSI, but going to 40psi can trigger the thermal cut off after 3-3.5 32" tires. We're upgrading to the 2781 soon and a viewer verified it will fit in the same spot. I would recommend the larger 2781 or similar if doing this project. It's only $30-50 more.

SmittyBilt 2781:
https://amzn.to/35V594Z

SmittyBilt 2780:
https://amzn.to/3oz21Ut

Metric to NPT Adapter needed to replace the primary hose attached to the SmittyBilt 2780:
https://amzn.to/2Tj9N6u

NPT 3-way T:
https://amzn.to/3oqeGcj

Pressure Switch:
I used 70-100 for safety but you could probably go with a 90-120PSI switch since the compressor is rated to 150 PSI.
https://amzn.to/3mnN4Tj

Solder Heat Shrink kit:
https://amzn.to/2HwKtam

Air Compressor Leader Hose with check Valve:
https://amzn.to/2YdNv8E

Air compressor Quick Disconnects multi-pack:
https://amzn.to/2FWhcWh

You'll also need 12" of scrap 14-16 gauge wire (low amps between the switch and relay) and two female quick disconnect connectors which you can get in a kit like this: https://amzn.to/2TmIFn4

The above is all you need to add the pressure switch. The plumbing is essentially in the order that the parts are listed above, starting at the metric female thread in the Smittybilt which will be exposed when you remove the existing leader hose.

From there you can use an existing airline and inflator like the ARB kit or go a step farther and convert the yellow airline to a latch on closed flow style like I did. You'll need to add a quick disconnect from the kit above to one end and a clip on chuck to the other. For that you'll need the following:

3/16″ Barb to 1/4″ NPT Male Thread:
https://amzn.to/3jrD3mf

Air Chuck:
https://amzn.to/3mbqAVs

If you plan to go the distance and install under the hood you might want to build a manifold like I did. This will also allow you to add a pressure gauge.

Viair 1/4" NPT Manifold:
https://amzn.to/2HrtwOB

1/4" NPT Ball Valves (One for compressor shutoff, one for bleeding out pressure)
https://amzn.to/3qTyWDg

1/4" NPT plug:
https://amzn.to/37CTslf

Digital Pressure Gauge:
https://amzn.to/31Grtxg

Good luck!
Video Contents
_________________
00:00 Intro
01:02 Onboard Air Manifold Overview
01:49 Manifold Design
02:20 Onboard Air Pressure Switch Placement
03:02 Connecting the Manifold to the Compressor
03:28 Choosing a Manifold Placement
04:13 Manifold Install
05:56 Conclusion
I've started cashing in all the free jokes. The links above may be affiliate links. Please use them to help support me making more content (and a fool of myself). Enjoy!

CREDITS: Thanks to Sponsored by Wifey for the inspiration - https://youtu.be/VDIfcZnu0dw

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