Posts Tagged ‘ Gearbox Breather Tank ’

Gearbox Breather Tank – Updated

Due to the changes to the car for 2014, the addition of a gearbox oil cooler means that one of the breather pipes into the gearbox breather tank needs to be removed, because it is now being used as the oil return to the gearbox from the oil cooler matrix.

So a slight change to the breather pipes was made converting one breather outlet from the gearbox to a twin outlet for the pipework back up to the breather tank. The single outlet from the gearbox is the factory breather point.

Gearbox Breather Modified Outlet

Gearbox Breather Modified Outlet

It all fits pretty neatly and clears the gearshift assembly on top tot the gearbox (just to the right of where the breather hose is hose clipped to the gearbox breather tube):

Gearbox Breather Modified Outlet

Gearbox Breather Modified Outlet

Gearbox Breather Tank

Courtesy of Pro Alloy Motorsport, I have a gearbox breather tank to add to the gearbox. Fitting one allows about an extra half litre of gearbox oil to be run in the gearbox, allowing for better lubrication and a larger volume of oil will dissipate more heat.

First the batter, and battery tray have to be removed. This give access to the top of the gearbox. The fill plug is removed and replaced with the supplied fitting to convert the fill plug into a breather point. Here it is fitted into the top of the gearbox. The second breather point can be seen top left of the picture:

8mm Fitting for Gearbox Breather

8mm Fitting for Gearbox Breather

The breather tank is to be bolted to the bulkhead, so an M6 jack nut was installed into the bulkhead and tightened securely:

M6 Jack Nut Mounting

M6 Jack Nut Mounting

A hole was then made in the bulkhead sound deadening with a soldering iron to allow the bolt to pass through and into the captive nut:

Mounting Hole Through Sound Deadening

Mounting Hole Through Sound Deadening

Both lengths of hose (one 10mm and one 8mm) were then measured and cut and then fitted to the two breather points with hose clips and then onto the breather tank on the bulkhead:

Gearbox Breather Points

Gearbox Breather Points

And here is the breather tank bolted to the bulkhead:

Black Breather Tank Fitted

Black Breather Tank Fitted

Astra VXR Sprint.....

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