i was reading 4crawler's writeup on the subject (http://www.4crawler.com/4x4/CheapTri...html#Breathers) just want to make sure the 1/8" NPT fitting works with the front IFS diff as well?

 

easiest way to tell is to pull the fitting that's in your diff already and match it up at the hardware store or find a FSM and see if its listed

 

The front diff breather is not already extended up into the engine compartment in an 1987 4Runner? I know my 2002 came extended from the factory. I'm not sure if my '93 was or not... I can't remember, and I don't own it anymore.

 

yeah the newer tacoma's and runners had factory installed extended IFS breathers but not on the pre 95's i believe

 

1/8" NPT will work. For the front I used a 18" NPT 90* elbow and a 1/8" NPT male threaded hose barb to relocate my breather. In the rear I used just the threaded hose barb and some hose of course.

 

great thanks. any reason why you used a 90 degree elbow?

 

Front and rear diff breather threads on my 1990 pickup were M10 x 1.0

 

Bummer!

 

You should use an elbow or an angled nipple to avoid the oil pan which is very close to the hose leading off of the breather. I did not use an elbow, but added some thermal sheathing over the hose, to avoid the oil pan melting the hose.

 

Nissan axle breathers thread into the the Toyota axles and have a much more pronounced nipple that is really easy to attach hose to. They're about $7 ea. from Nissan. They are also easy enough to bend to clear the oil pan.

 

somewhat of a hi-jack...

When using the elbow, do you have to worry about the gear oil getting stuck, thereby causing a functional plug or obsruction? Since gear oil is pretty thick, I'm wondering if it won't be able to flow through the flat portions created by the elbow.

 

The level should never get that high in the diff, if it does it's overfilled.

 

Very usefull..

 

or you roll the truck over, but then you've got other issues

 

I pulled the silver caps off the breathers with pliers, then I got some 12mm see through hose and plugged it on with some really tight hose clamps, it works so good.. I've done alot of flexing and wheeling since I installed them and no water in diffs or hoses haven't popped off...

Cost less than $10 man..

 

$10 is way cheaper than flushing two diffs...