I used 516 fuel line 12ft ish depending on how you decide to route. A straight shanked and a 90 degree 6mm hose union with a tread that matches the current diff breathers. I wouldnt bother about these either but for reference, this is the union on the top if the gearbox. Heres how to install diff breathers and why theyre so important. Diff breather extensions are an essential modification if you plan on doing any kind of water crossing when touring in the outback. Got my diff back from road and race and managed to snap the breather a the dff rolled over in the boot on the way home. So here is a quick little write up for the diff breather mod. Superior engineering have come up with an excellent product with their new universal diff breather kits. Raising the height of the filtered vents helps to prevent the ingress of water to the differential housings and gearboxes during water crossings. Differential breather mod for dummies pics tacoma world. This is a pretty straightforward mod and gives a bit more insurance to oil contamination in deep watermud crossings. I ended up changing mine with diff breathers located in my engine bay. The one i bought new from the dealer had a plastic cap instead of the.
There has been a lot of talk about the effectiveness of the differentrial and gearbox breathers used on the 80 series toyota landcruiser. A cheap fuel filter or the filters arb use on their air compressors are good to use on your extension diff breathers. Under normal operations, these assemblies heat up and the air inside expands, increasing the pressure and thus the need to be vented to the atmosphere is. Oil seals are designed to seal in one direction only, so if the low pressure inside the differential cannot be equalized quickly, water will be drawn past the oil seals and into the. Diff breather kits are used to elevate the the vents in your 4. The arb differential axle breather kit will allow this excess pressure to vent into the atmosphere, however when the assembly cools down, the air inside will. Breathers rerouted with the fitment of the raised air intake. A differential axle breather serves the important purpose on a 4wd vehicle of venting the air pressure in drivetrain assemblies such as the differentials. Although they were burning a hole in the garage shelf waiting to be installed not. Rear diff breather mod page 3 toyota 4runner forum. Mar 27, 2009 the stock breathers have no way of keeping water out of your differential case if you submerge the axle. Piranha 4wd universal diff breather kit for diffs, gearbox, transfer box transmission a standard diff breather allows for expansion, as the diff heats, a oneway valve allows hot air out of the diff. Diff breathers specifically designed for use on vehicles that work in offroad and harsh conditions from subzero to humid tropics.
Is that how our oem 80 series diff breathers, transaxle breathers, and locker breathers are. View that page for details one of the most important modifications to your land rover if your ever going to take it for a swim is to extend your axles, gearbox and transfer case breathers to a higher location than the factory position. Oct 24, 2017 superior engineering have come up with an excellent product with their new universal diff breather kits. You do not have the required permissions to view the files attached to this post. Tough toys sells products suitable for many different vehicle makes and models. If your deep enough to draw water into your breathers you probably have more serious issues to think about that a bit of water in the oil. The objectives are to restore choanal patency, not to interfere with the.
Piranha 4wd diff breather kit offroad toyota landcruiser. Feb 01, 2016 while the breathers look the same, the breather in the diff breather mod is a two way valve not one way like the original on axle breather. Your breathers should go to a point that is higher than where water will get to in a worst case scenario. One goes to the top hat valve and the other connects to the transfer box. When installing the extension diff breathers on my latest 80, there was an audible rush of air when i pulled the diff breather hose off the barbed fitting on the housing. There is a fitting on the toyota 4 cylinder intake manifold that will serve this purpose well, but if you have to buy the fitting new, there is a cheaper alternative. It just pushes in and should come off fairly easily. Differential breather kit 170112 wheelers off road. Hey mudders, i bought a 4runner diff breather valve to upgrade my old diff breathers 90930036 and upon inspection it is a one way valve, only allowing air to escape the diff, not enter. For diffs, gearbox, transfer box transmission a standard diff breather allows for expansion, as the diff heats, a oneway valve allows hot air out of the diff. When your driving for long periods of time, your diff and transmission will heat up, causing the air inside to change pressure. Came with 32 of tubing cut in half, 16 for rear diff and one for elocker had about 2 of tubing left. Front ends around the firewall and back ends around the diff well.
All four x 4 spares 10 mcdougall street kotara nsw 2289 australia. Small cost and piece of mind knowing no crap will get in there again. Kits are typically installed into an engine bay and use sintered or foam type filters, which often become blocked due mud and. I replaced the seal but i was told it could be because my diff breather was blocked. Just follow the instructions in the link below and your pocket book will thank you. These kits allow you to mount the breathers high up in the engine bay, away from the. Under normal operations, these assemblies heat up and the air inside expands, increasing the pressure and thus the need to be vented to atmosphere is created if a factory fitted. A standard diff breather allows for expansion, as the diff heats up, a one way valve allows hot air out of the diff. Ran the tubing each from diff and elocker to engine bay by steering pump. While the breathers look the same, the breather in the diff breather mod is a two way valve not one way like the original on axle breather.
Even if you dont plan on going through much water, diff breather extensions allow you to keep the beathers in a high area out of the way of dust, and other grit that may cause your. The kit replaces low sitting factory breathers, and is used to prevent water and containimants reaching differentials, gearbox and transfer case breathers during river crossings or mud holes. The rear axle breather vents air pressure in the axle helping to protect your axle seals and reduce leaks. It will accommodate 4 inlets, 2 differentials, transmission and transfer case. Diff is hot, when you cross cool water it will vacuum that mudwater into your diffcostly repair. Also picked up a couple brass t pieces not shown here. Diff breathers welcome to land cruiser owners on line. Lever off the diff breather, this is the knobby thing on top of your diff. Diff breather kits are used to elevate the vents in your 4x4 housings and gearboxes, to minimise the chance of water and other contaminates getting into your factory standard breathers.
The front diff breather enters the axle housing about 25mm above the axle centreline. Apr 10, 2020 your breathers should go to a point that is higher than where water will get to in a worst case scenario. They are supposed to stop stuff getting sucked in whilst letting the pressure out that develops when the diffbox warms up thing is like nonreturn valves in most. When the diff takes a bath the valve breather closes to stop sucking water as the diff cools. The ironman 4x4 twin breather kit is used to raise the height of your vehicles driveline components vents to help prevent water ingress by providing raised filtered ventilation. To do it, you simply remove the breather that is in the diff usually on the top of the pumkin with a. If its at a neutral pressure the purpose of the breather, its less likely to be stressing those seals. Under normal use the air inside the axle heats up and expands, increasing the pressure inside the axle which needs to be vented. Rear diff breather relocate, blhm, scanguage ii, toytec ultimate lift set at 3 waal, sway bar relocate, front diff drop, weathertech mats, trd cat back exhaust, trd. Only difference from others is that i retained the stock breather instead of replacing it with a new one. There is a nissan breather that fits perfectly into the threads that our stock toyota breathers use except land cruisers. To be honest i wouldnt bother raising the gearbox breathers unless you are a serious off roader and do some really deep wading. Freightliner rear differential breather kit kit2902.
What is a differential breather every differential has a breather. I started to look in detail when oil was noticed coming out of the front differential breather valve. It all looks like the exisiting one except that it effectively comes in two bits. For this upgrade, i purchased two arb 170112 differential breather kits you could. Of course it will fit any other truck depending on model but this kit was enough to do both lines on my 18 4runner. Installing arb differential covers and differential breather kit.
This modification took me 2 hours, required only basic tools and an average amount of technical ability. The breather is nothing more then a air vent for the rear axle. Delica club view topic t0mes delica mods front diff. This is a 4 port kit which will do the front and rear differential on your vehicle as. The chance of the valve sticking open is the reason why i decided to do the rear diff breather mod in the first place. Arb 170112 differential breather kit for dana style axles. Piranha diff breather kit, includes 7m of hose, 2 x filters, mounting bracket, hose clamps brass fittings. Differential breathers if a hot differential is cooled rapidly, by going through water for example, a low pressure area will be created inside the differential. Arb differential breather kit differential breather vent ok4wd. Limited lifetime warranty raneys warrants its products to be free from defects in material and workmanship under normal use and service. The trademarked names of vehicles and vehicle manufacturers are used on this website to denote vehicle suitability and for categorization of aftermarket parts only.
Please make sure you post in the correct section on the site, this way it keeps the site tidy and ensures you get a more relevant answer. Rear differential breather mod toyota tundra forum. The breathers are designed to allow air pressure to escape as the diff, gearbox etcas it heats up. Route the hose up through the engine bay and cabletie it where its not going to get in anythings way such as the steering. The breathers are on the top of each diff just off the centre they have a domed cap the automatic bit you will have to remove this existing breather and fit a nipple to take the breather tube. I tried to blow some air through the breather line from the diff end but im not sure.
Since newborns are obligate nasal breathers, establishing an airway is an acute. The problem is, when you submerge the axle for more than a few seconds the temperature inside the axle goes down and the pressure inside the axle also goes down. I busted out a rear hub seal and was leaking diff oil everywhere. Even those with minimal mechanical skill shouldnt have an issue. The bit you see sticking out of the diff is pushed in to a small cup. As your exclusive remedy, raneys will replace free of charge any product that in reasonable determination does not comply with the foregoing warranty. A differential axle breather serves the important purpose on a 4wd vehicle of venting the air pressure in drivetrain assemblies such as the differentials, transmission and transfer case. But i noticed when i had the locker installed in the back they also replaced the whole breather line from the rear diff right up to the top of the firewall. Ack 4 port universal 4wd diff breather kit aussie custom. I thought the bit stcking out just pushed into the diff. Diff breathers welcome to land cruiser owners on line lcool. The issue with this is that the diff then has a vacuum and wants to suck from other places which may mean through oil seals.
Apr 24, 2020 the rear axle breather vents air pressure in the axle helping to protect your axle seals and reduce leaks. Please make sure you post in the correct section on the site, this way it keeps the site tidy. Thread hose through hole and point it towards the shelf. The stock breathers have no way of keeping water out of your differential case if you submerge the axle.