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I finally got around to doing the SCUBA mod to raise the breather on the e-locker, rear diff, transmission, and transfer case.
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The original SCUBA mod by Shadow Warrior can be found here http://www.fjcruiserforums.com/forums/4x4-off-road-tech/29229-scuba-driver-transmission-transfer-case-rear-differential-e-locker-breather-mod.html
Taken from Shadow-Warrior's post
Historic Background For Doing This MOD
Toyota has moved the Front Differential and Front Actuator breathers up high in the engine bay already for you, but neglected to move the Rear Differential breather, E-Locker breather, Transmission & Transfer Case Breathers. Those with the MT will only have one breather in the engine bay area, you don't have the front actuator like the AT's do. I decided to relocate the breathers up high too, I would normally run all breathers inside the vehicle, but since the front is already in the engine bay. I decided to run the rear differential & Locker there too. I want to say this has been a collective effort by many on doing this Breather MOD.
I took quite some time to decide how I wanted to go about this mod. The major issue I had was the fact that I am not a fan of using barbed hoses or the red filter which Shadow-Warrior used. However, I saw ToledoFJ's post on how he purchased a kit which used pneumatic quick connect fittings. Having used them in the past for quite a bit of automation work I was sold that this was the way to go. These are air tight and less likely to leak than threaded or barbed connections. Unfortunately I couldn't afford the $200 price tag on the kit which Toledo had.
So I went about designing my on kit with manifold. It took quite some time to find and obtain all the parts for my design, but this is what I came up with.
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The E-Locker ties into the Rear Diff 'T' and then is routed up to the jack compartment
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The Transmission and Transfer Case are routed from the rear of the engine back along the passenger side frame and across the rear axle to the jack compartment.
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The Manifold is mounted in the jack compartment and has a polyethylene breather (blue breather pictured) attached the the manifold which is vented to the atmosphere. I went with the polyethylene breather instead of the typical filters you see because it offers better filtration over the alternatives and makes drawing it water less likely.
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I plan on putting silicone around the two grommets which the hoses go through to seal everything up. I may also add some heat shrink around each of the connects.
So I went about designing my on kit with manifold. It took quite some time to find and obtain all the parts for my design, but this is what I came up with.
The E-Locker ties into the Rear Diff 'T' and then is routed up to the jack compartment
The Transmission and Transfer Case are routed from the rear of the engine back along the passenger side frame and across the rear axle to the jack compartment.
The Manifold is mounted in the jack compartment and has a polyethylene breather (blue breather pictured) attached the the manifold which is vented to the atmosphere. I went with the polyethylene breather instead of the typical filters you see because it offers better filtration over the alternatives and makes drawing it water less likely.
I plan on putting silicone around the two grommets which the hoses go through to seal everything up. I may also add some heat shrink around each of the connects.
