Rear Diff Breather Mod

Does anyone have a link to a how to thred like the AC mod?

Thanks

 

www.tacomaworld.com/threads/rust-on-frame-with-a-c-drain-mod-fix.444138/

 

No I meant a how to diff brether mod similar to the AC mod thread.

 

isn't the major problem

https://www.tacomaworld.com/threads/diff-breather-mod-for-dummies-pics.15686/#post-193885

 

im a noob and i may be absolutely wrong about the physics of this...but does installing this mod with the long hosing increase the resistance and ability of the breather to work as well as without it when just driving under normal circumstance? or does it not matter because it creates a strong enough vacuum? I understand the application of this for underwater purposes...but i just want to be sure it's not stressful for the diff to have this on in the long run.

 

The volume of the tube is inconsequential in and of itself if you used a one way.
It matters even less because you are supposed to use a two way.

 

gotcha...was just randomly speculating

 

Thank you

 

bumping

has anyone confirmed its a two way valve breather or just a vent?
One of the reasons you'll get water in your diff with the normal vent is its a one way valve and when the diff cools rapidly in water crossings it turns into a vacuum and sucks water in from around the gaskets etc.

The breather just lets it breathe. So are the other ones on the trans etc just a vent or an actual breather?

 

And has anyone mounted the breather behind a tail light? I think I remember seeing a picture a while back of someone doing that but i cannot find it...

 

Yes.

 

Yup:
https://www.tacomaworld.com/threads/rear-diff-breather.431400/page-2#post-15431100

 

With the 2 way breather aren't you at risk of letting dust enter the diff? Should there be a filter on the breather to prevent this?

 

Havent you tried putting it in your mouth and sucking/blowing it?
(Ok, Ok, I mean it seriously)!
Air goes both ways when you do it and the little cap helps keep stuff out.

 

I just mounted mine above the cubby box between the gas filler area and the cubby. Remove the cubby and you can easily access it. Its out of the tire spray zone there (as evidenced by the lack of mud I had up there )

 

Male pipe thread hose barb:


Pipe union:

 

How come something so simple can turn into a nightmare?

I ordered the parts mentioned by Tommyvue on page one and today I decided to start the mod.
I removed the left rear light, routed the hose and removed the factory breather, it came off fairly easy. When I tried installing the new one it wouldn't go in no matter whatn not even even one tread. I tried at least ten times and my neck start hurting so I decided call it the day and install the old back. It went in really easy just screwing with my fingers a few turns, used a wrench to snug tie and the union would just turn and turn and turn and never get tight. Tried to revove again and would just turn and turn and it wouldn't come out.

How much of a problem do I have now?

 

Sorry to revive this thread, but I've done a lot of reading and there seems to still be conflicting info on part numbers for this mod. I've made a list of the part numbers that I've read about people using:

$7 90404-51026 Intake Air Control Valve Union

90404-51026

$7 90404-51319 Toyota Genuine Parts - Union (90404-51319)

90404-51319
90404-51052

90930-03097

$7 90930-03136 Toyota Breather Plug - 90930-03136

90930-03136

Which two do I need? So many people are doing this mod with different part numbers it's gotten pretty confusing

 

Breather -

$7 90930-03136 Toyota Breather Plug - 90930-03136

90930-03136

Union -

$7 90404-51319 Toyota Genuine Parts - Union (90404-51319)

90404-51319

Not speculating. I did it not long ago and looked up my orders for ya.

 

Nice, thanks man. It seems like that's what most people are using. Not sure why those other part numbers are getting thrown around