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MORE Twin ARB + 1 Gallon Tank Bracket Install Overview and Impressions

Discussion in '3rd Gen. Tacomas (2016+)' started by tacomarin, Jun 24, 2020.

  1. Jun 24, 2020 at 5:05 PM
    #1
    tacomarin

    tacomarin [OP] ig: @the_chubby_unicorn_trd

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    I haven't found a lot of information on the MORE mounting bracket for an ARB twin with a 1 gallon tank under the hood so I wanted to share my experiences and my install.

    For starters, here's the kit: https://mountainoffroad.com/collect...sor-and-1-gallon-tank-for-toyota-tacoma-gen-3

    The bundle pricing on its own is very good. I happened to also get it on a flash sale which sealed the deal for me.

    You may be asking yourself if you need the 1 gallon air tank. The short answer is no, especially if all you're doing is filling tires or if you're running air lockers. It was appealing to me for a few reasons. 1) For mountain biking, seating tubeless tires can be a pain. Having a gallon of air pressurized to 150 psi can make a huge difference with stubborn tires. That's how I do it at home (with a trim-sized air compressor), so this will give me that ability if I have to put a new tire on while we are on the road. 2) Maaayyybe for running some air tools. Though I don't think this is really enough air volume to make that worth while. Maybe for some finish nail gunning. 3) Technically it's better for a compressor to fill a tank first, then have the tank fill the tires. The reason being that the shrader valves in your tires can flow less air than your compressor can produce. So if your compressor fills the tank, then your tank fills the tires (at a lower flow rate), your compressor runs more efficiently. That said, this is absolutely not mandatory and ARB even says it's fine to hook your compressor up directly to your tires as long as you aren't doing "more than a few."

    So, to cut to the chase, here is my final install. I am pairing this with with an @Shellshock style dual inflator setup: https://www.tacomaworld.com/threads/shellshocks-diy-inflator-deflator.613122/
    IMG_9671.jpg IMG_9673.jpg

    I went back and forth on whether or not to plumb in quick connects that could be accessed at the front and rear bumpers. Ultimately I decided not to for a couple reasons. First, I think the compressor will be happier running with the hood open. Keeping the quick connect under the hood will force me to open the hood to use it. Second, running air lines all over the place creates more opportunities for something to go wrong. Leaks, broken lines, bungled up fittings. Things I don't want to deal with on the trail. For those reasons, though it's more annoying to have to open the hood to use it, it simplifies the overall system.

    Some other caveats: I'm not running any check valves, water traps, pressure gauges, pressure relief valves, or any of that crap. Why not? The long and short of it is I don't think I need to. The ARB compressor has a built in pressure switch that shuts it off at 150 PSI. If that malfunctions, it could burn up the compressor, but I can also just turn it off if it won't stop running. I don't care how much pressure it's making. I can check that with my tire inflator gauge too. It's not running that often, so I don't expect much water, and I'm also only filling tires so I don't really care if there's a little moisture in the tank. And I'm only holding 1 gallon of air temporarily, so if it leaks back against the compressor I don't really care. Plus ARB doesn't seem to think that matters. So simple is the name of the game.

    Okay let's get down to details. The kit comes with the mounting bracket and all the hardware you need to install it. It comes with exactly one fitting, it's a 1/4" NPT to -04 AN elbow. Why does it come with that particular fitting? Because that fitting will fit in the compressor AND under the hood. And also, -04 AN is the fitting size that ARB uses on their hoses.

    So what else do you need? Well if you are running air lockers, you may want to get a manifold kit. I'm not covering that, so you'll have to figure that out on your own.

    What you will need are some air lines to connect the compressor to the tank, and a quick connect on the outlet from the tank. And the easiest way to connect them is to use the ARB air lines that already have -04 AN fittings on the ends. I got these 1/2 meter long ones: https://www.northridge4x4.com/part/...ories/0740202-arb-hose-reinforced-jic-04-0-5m and this quick connect: https://www.northridge4x4.com/part/compressor-mounts-accessories/0740111-arb-air-hose-coupling Note that the quick connect that I linked works with -04 AN fittings! No adapters needed. :woot:

    Alright let's get this show on the road. The MORE kit comes with some pretty basic instructions with some okay pictures: https://cdn.shopify.com/s/files/1/0016/7850/8143/files/ARBTACO3_instructions.pdf. The bracket itself is very well made and well thought out. The powder coating is thick (real thick), and the hardware is all there. Overall, I give the kit an 8/10.

    Step 0) Pre-assemble the bracket and check the clearance of the slot and the compressor mount plate. On my kit the powder coating was REEEEaaaaal Thiccc. It took quite a bit of back and forth to finally wear off just enough powder coating to get it to slide in. I also had to ream out one of the bolt holes for attaching the compressor plate to the mounting bracket. Do yourself a favor and check these out before you mount it into your truck.

    Pic below shows the powder coating I had to wear off to get the compressor mounting plate to slide into the slot of the mounting bracket. Note, that isn't down to bare metal. Just the outer, glossy black part of the powdercoating had to be worn through.
    IMG_9619.jpg

    Step 1) Rotate the pre-installed tank fittings approximately 180 degrees. I found that what works best is to have the fitting that is closest to the passenger fender rotated slightly aft, toward the firewall. For the fitting closest to the engine I rotated it slightly fore, toward the bumper. This makes attaching the airlines a lot easier in a few steps.

    Passenger fender side of tank:
    IMG_9610.jpg

    Engine side of tank:
    IMG_9609.jpg

    Step 2) Install the tank on the mounting bracket using the provided hardware.
    IMG_9611.jpg

    Step 3) Install the air lines onto the tank fittings, and install the tank bracket into the truck (follow MORE's instructions). Note: Make sure you use an appropriate thread sealer for AN fittings like Loctite 545 for these fittings. Normal thread sealer will not work. And make sure you allow it to cure completely before pressurizing!
    IMG_9612.jpg IMG_9614.jpg

    Step 4) Mount your compressor to the mounting plate with the provided hardware. I've got nothing to add here. Just follow MORE's instructions.

    upload_2020-6-24_16-39-39.jpg

    Step 5) Make your electrical connections and run your wiring. I'm not going to go into much detail on this. Your compressor will come with all the wiring and schematics you need. It has built in relays and fuses. All you really need to do is hook up the correct wires to the correct wires of your switch. I had already pre-run wires into the cab and had a switch wired up, so I just had to connect those wires to the correct ARB wires and I was done. I ran everything in wire loom and zip tied it across the fire wall. I left a nice big service loop that sits behind the air comrpessor which makes it really easy to pull the compressor out if needed. I didn't shorten the ARB harness at all.
    IMG_9617.jpg IMG_9616.jpg IMG_9618.jpg

    Step 6) Mount the compressor mounting plate onto the bracket using the supplied hardware. Here is where your Step 0 will come in. If you did your homework then this will be easy. If not, you will fight it.
    upload_2020-6-24_16-43-12.jpg

    Step 7) This is a bit confusing following MORE's instructions. Basically, where the air fitting comes out of the compressor can be rotated, and needs to be rotated for the fitting to clear the hood. To do this, there is a bolt head that you can access with a 10mm wrench through the opening by the air fitting. Loosen that, install the fitting, and then rotate the fitting over. Note: Use normal thread sealant for the side of the fitting going into the air compressor (NPT thread). MORE shows the fitting pointing towards the firewall. I positioned mine pointing toward the bumper. My reasoning was that I didn't want to run a potentially hot air line near my electrical bundle. Once you've got your fitting positioned - tighten that cap bolt using the 10mm wrench through the slot.
    IMG_9621.jpg IMG_9620.jpg

    Step 8) Connect your air hose from the tank to the compressor. Connect your quick connect to the hose from the tank. Again, use AN appropriate thread sealer for these connections.

    IMG_9622.jpg

    Step 9) Find some way to mount your hose. My first version was just using some 1/2" cable clamps and some self-tappers through the plastic. This seemed adequate but not exactly robust.
    IMG_9623.jpg

    More recently, I 3D printed up a quick connect holder that mounts on top of the washer fluid reservoir using that bolt. This seems to do the trick a little better, and also protects the quick connect from dirt and gunk. If anyone wants this model I'm happy to share it as long as you promise to keep the silly Snake Tails logo on it.
    IMG_9680.jpg IMG_9677.jpg

    If you don't want to do that, there are lots of things to zip tie to, or just stuff it into a crevice. You may have to get creative here :D

    Step 10) Have a celebratory drink of your choosing.

    Happy trails!
     
  2. Jun 24, 2020 at 5:49 PM
    #2
    calebc

    calebc Well-Known Member

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    Nice job on the write-up! A compressor is on my short list of to-dos.
     
    tacomarin [OP] likes this.
  3. Jun 24, 2020 at 6:56 PM
    #3
    tacomarin

    tacomarin [OP] ig: @the_chubby_unicorn_trd

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    Yeah I’m pretty pumped for this setup! (I’ll see myself out...)
     
    msgs350 likes this.
  4. Jun 25, 2020 at 12:19 AM
    #4
    cmt_taco28

    cmt_taco28 Well-Known Member

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    can someone answer this question? if I was make a 4-way inflator system and have a viair 450p auto, and lets say 1 tire is 2 less psi than the other 3, and I preset a certain PSI, how will that 1 tire match with the other 3 if that 1 tire is 2 less psi? hopefully this is not a confusing question. thanks in advance!
     
  5. Jun 25, 2020 at 1:34 AM
    #5
    bulalo

    bulalo Well-Known Member

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    let me try. Like water, air goes directly to the path with the least resistance. So basically it will inflate more on the tire with the lowest pressure until it equalizes on all 4 tires then all 4 gets similar amount of air
     
    rlx02 and tacomarin [OP] like this.
  6. Sep 1, 2020 at 11:42 AM
    #6
    Sierra Trail Pro

    Sierra Trail Pro The more I play with it, the Bigger it gets!

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    The M.O.R.E. bracket and ARB Twin compressor works great in my 2020 Pro!
     
    RyanDCLB and tacomarin [OP] like this.
  7. Oct 24, 2020 at 9:30 AM
    #7
    Camps

    Camps Well-Known Member

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    Stock, but my old 1st gen was BUILT....
    Great write up @tacomarin! Guessing you keep the tank empty most of the time and fill it up when needed. How long does it take to fill up the tank? Also, does a single tank bring all 4 tires back to pressure? Or does it take a couple tanks worth? Do you use the same hose when putting air into your bike tires? Finally, do you release the air out of the tank when the job is finished?
     
  8. Oct 24, 2020 at 2:04 PM
    #8
    tacomarin

    tacomarin [OP] ig: @the_chubby_unicorn_trd

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    The tank stays full, or at whatever pressure it ends up at when I'm done filling up. I'm not too worried about trucking around 150 psi. 1 gallon of air at 150 PSI is not all that much air, definitely not enough to fill up a tire, so the compressor turns on pretty much immediately. A gallon at 1500 psi might get you there :D. The compressor runs continuously while I'm filling up, but the benefit in this type of setup is the compressor only has to fill the tank with a 1/4" hose, which in turn fills up the tires through the more restrictive schrader valve. So in theory the compressor isn't working as hard and it should fill a bit faster. For the bike tires, yes I use the same hose. I use presta-schrader adapters like these
     
    Camps and RyanDCLB like this.

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