ARB compressor mounting location

K-rover

Well-known member
Jan 15, 2010
2,170
63
Raleigh, NC
Im picking up the CKMA12 and need some ideas on where to mount it.
-The bottle jack location under the hood is a no go since I used that space for some wiring and a fuse block.
-I had to move my coolant tank to the firewall in order to accommodate the RTE shock towers, so it cant go there.
-I thought about mounting it behind the bins in the back, but it doesnt look like there is enough room back there.
-Im using it for air lockers and tire inflating as well so I need to put it somewhere that I can access it to hook up the air line.

Any ideas??
 

mick968

Well-known member
Feb 10, 2009
215
0
St.louis area(Waterloo,ill)
Mine is under hood drivers side (near firewall )close to brake fluid resevoir Easy to hook up and access doesn't seem to get too hot there. If Rover wasn't 800 miles away (Rockies) I'd go out and take pic of the mount. Good luck.
 

K-rover

Well-known member
Jan 15, 2010
2,170
63
Raleigh, NC
Mine is under hood drivers side (near firewall )close to brake fluid resevoir Easy to hook up and access doesn't seem to get too hot there. If Rover wasn't 800 miles away (Rockies) I'd go out and take pic of the mount. Good luck.

Did you mount it directly to the firewall? Or did you make a bracket for it?
 

Jeff Blake

Well-known member
May 6, 2016
429
16
Pacific Beach, San Diego
I plan on adding air at some point and will use the spot where the air suspension pump went. Under car, driver side. There is a bracket already ready to go. Another idea is if you remove the rear sway bar, there is some space up there
 

Blue

Well-known member
Mar 26, 2004
10,055
867
AZ
Mine is mounted in the passenger side rear cargo bay cubby. Mounted to the floor.
 

K-rover

Well-known member
Jan 15, 2010
2,170
63
Raleigh, NC
I plan on adding air at some point and will use the spot where the air suspension pump went. Under car, driver side. There is a bracket already ready to go. Another idea is if you remove the rear sway bar, there is some space up there

Ideally I would like to mount it inside the vehicle, or under the hood.
 

Blue

Well-known member
Mar 26, 2004
10,055
867
AZ
I thought about that, but keep a bunch of stuff in the cubby. Hate to lose that.

On top of / stuffed around the ARB compressor I have a coil of air line, 1/2" drive long bar for wheel lugs, jumper cables, winch remote, heavy duty snatch strap, first aid kit, liter of water, and bungee cords & ratchet straps. I just have to pull all that stuff out if I'm going to use the compressor because it gets hot.
 

SCSL

Well-known member
Apr 27, 2005
4,144
152
I plan on adding air at some point and will use the spot where the air suspension pump went. Under car, driver side. There is a bracket already ready to go. Another idea is if you remove the rear sway bar, there is some space up there

I would strongly advise against that.
 
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Blue

Well-known member
Mar 26, 2004
10,055
867
AZ
I'm inclined to keep things out of the engine bay or out from under the truck whenever possible.
 

SCSL

Well-known member
Apr 27, 2005
4,144
152
Why? Water ingress?

I would think as long as you get a sealed-type compressor, it would be fine.

Plenty of people do it, https://www.google.com/search?rlz=1....0..0.0....0...1c.1.64.img..0.0.0.zpwIbbXPUQM

Compressors have wires coming in, and air lines coming out. Assuming one is actually four wheeling (and that's the purpose of having an ARB air locker), the compressor mounted to the exterior of the vehicle (let alone underneath the vehicle) is going to be exposed to excessive amounts of water, dirt, mud, dust and rock impact. And it's going to fail. Period. Sooner or later. For a show truck / "over-lander" / etc, maybe that's ok. But for an off road truck it's just not a wise place to mount it. One step up would be somewhere under the hood. But optimally it would be mounted as high and unexposed on the vehicle as possible: that means inside the vehicle. On top of the rear inside wheel well is a good spot. Bothered by noise = doesn't need an air locker. Besides, the sound of that compressor firing up is among the great pleasures of four wheeling (IMHO, of course). You will then save yourself many a ruined trail ride by not exposing your compressor to the elements, to mud cake and, of course, to the various impacts of the trail. Mounting something with both electrical wiring and air lines to the underneath exterior of a trail rig is just silly. However, if you're not really wheeling your truck, where you mount the compressor doesn't really matter.

Edit to add: "Plenty of people do it". Plenty of people do many silly things to Land Rovers. Plenty of people do not actually wheel their Land Rovers. Trust those of us who have actually done this, purposefully. But it's your time and money, so to each his own.
 
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Jeff Blake

Well-known member
May 6, 2016
429
16
Pacific Beach, San Diego
Thanks for the explanation

Side question, I recently did some 4x4ing up around terwilliger hot springs in Oregon, crossed many a "puddle", or small pond, water up to about oil pan gasket level. Are there any breather lines that could have pulled in water? Or anything to maintenance wise that should be done after water crossings?
 

SCSL

Well-known member
Apr 27, 2005
4,144
152
Thanks for the explanation

Side question, I recently did some 4x4ing up around terwilliger hot springs in Oregon, crossed many a "puddle", or small pond, water up to about oil pan gasket level. Are there any breather lines that could have pulled in water? Or anything to maintenance wise that should be done after water crossings?

No prob. You've got a breather line, yes. If I find myself in any deep water / mud hole type of situations, I'll typically drain and refill my diffs afterwards. Some might think that's overkill, but I try to do mostly dry(ish) wheeling nowadays, so it doesn't seem like too big a deal to me timewise. Someone who does more frequent water crossings and wet stuff may want to chime in.

Coincidentally, ARB makes a kit: http://store.arbusa.com/ARB-Differential-Breather-Kit-170112-P22783.aspx

I have no info on its efficacy, but it's fairly inexpensive. Perhaps someone who has used this (or similar) can opine.
 

Jeff Blake

Well-known member
May 6, 2016
429
16
Pacific Beach, San Diego
Dang, that's expensive and a PITA to keep refilling the diffs. Those breather lines look cool. Would be great if anyone has had experience with them.

I'll probably mount the compressor behind the center console, since I have a false floor there now anyway, with a void under it.
 
Hi, this is my sollution. A support in the corner
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Do V8 engines let you use this space?

Regards
 

K-rover

Well-known member
Jan 15, 2010
2,170
63
Raleigh, NC
I could have used that space, but I had to move my coolant tank to that location to allow for my RTE shock towers.
 

K-rover

Well-known member
Jan 15, 2010
2,170
63
Raleigh, NC
Update: This is what I ended up with.. And I put a rubber cap over the air chuck when not in use to keep the rain and dust out.

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