FJNewb's SCUBA DRIVER Mod!! - Toyota FJ Cruiser Forum
4x4 / Off-Road Tech This section contains all discussion related to taking the FJ Cruiser in Off-Road situations, 4x4 applications and any armor modifications.

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post #1 of 391 (permalink) Old 11-20-2009, 03:38 PM Thread Starter
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Thumbs up FJNewb's SCUBA DRIVER Mod!!

I finally got around to doing the SCUBA mod to raise the breather on the e-locker, rear diff, transmission, and transfer case.



The original SCUBA mod by Shadow Warrior can be found here https://www.fjcruiserforums.com/forum...ather-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.





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.





FJraja, asnobody, TexasGMG and 1 others like this.

Last edited by FJNewb; 09-06-2012 at 06:58 AM.
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post #2 of 391 (permalink) Old 11-20-2009, 03:39 PM Thread Starter
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Re: FJNewb's SCUBA DRIVER Mod!!

Also just an FYI. Not sure how many have seen the fitting they use on the 08's for the transmission, but here it is. Slightly different than the breather that they used on the 07 models.





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post #3 of 391 (permalink) Old 11-20-2009, 03:45 PM
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Re: FJNewb's SCUBA DRIVER Mod!!

Nice pic's thanks for posting
how long did it take to complete the install ?






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post #4 of 391 (permalink) Old 11-20-2009, 03:48 PM Thread Starter
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Re: FJNewb's SCUBA DRIVER Mod!!

It took a little over an hour. The most time consuming was getting to the breathers behind the engine (have enough scrapes to prove it) and deciding how I wanted to route the pneumatic tubing from there.



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post #5 of 391 (permalink) Old 11-20-2009, 10:16 PM
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Re: FJNewb's SCUBA DRIVER Mod!!

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FJNewb previously said: View Post
It took a little over an hour. The most time consuming was getting to the breathers behind the engine (have enough scrapes to prove it) and deciding how I wanted to route the pneumatic tubing from there.
What temp is the pneumatic tubing good too?
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post #6 of 391 (permalink) Old 11-20-2009, 10:27 PM
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Re: FJNewb's SCUBA DRIVER Mod!!

Looks good Newb...definitely very clean...

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post #7 of 391 (permalink) Old 11-20-2009, 10:37 PM
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Re: FJNewb's SCUBA DRIVER Mod!!

Nice solution. I plan on doing this at some point soon as well.

Looks like you did a great job on it. Very nice photos as well.

Do you have any info on the parts (cost/part#'s/MFG.) you could share?

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post #8 of 391 (permalink) Old 11-21-2009, 07:00 AM Thread Starter
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Re: FJNewb's SCUBA DRIVER Mod!!

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What temp is the pneumatic tubing good too?

-100F to 175F. It doesn't touch the engine or anything, so all you are concerned with is ambient temperature which doesn't reach this high. Heck my old Turbo Civic barely reached 190 degrees and that was with an open down pipe.



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post #9 of 391 (permalink) Old 11-21-2009, 08:17 AM
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Re: FJNewb's SCUBA DRIVER Mod!!

Very cool. Nice install and excellent pics. Great job

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mods so far
Mod, mod, and more mods and it still looks way to friggin' stock.....grrrrr

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post #10 of 391 (permalink) Old 11-21-2009, 10:04 AM
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Re: FJNewb's SCUBA DRIVER Mod!!

Nice looking setup you have there.....

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