Typical Ball Bearing Turbocharger Issues
My brand new GT Ball Bearing Turbocharger is leaking oil into the turbine housing and compressor housing...
This is a very common enquiry here at GCG, and here are the solutions to the problem:
- Oil Feed Pressure: The oil pressure at the oil feed line must not exceed 65psi, if it does, then an oil feed restrictor is required (See Turbo Accessories).
- Oil Drain:
- Make sure the oil drain line is not kinked or blocked.
- Make sure the oil drain hose/pipe is at least 13mm in internal diameter.
- Make sure the oil drain does not have any uphill areas as the drain is gravity fed. 90 Degree bends from the turbo or sump are fine, but a minimal angle towards the ground is required.
- Make sure the oil return point in the sump is above the level of oil. This can cause a restriction, which will pressurise the core assembly and force oil past the piston rings in the turbo.
- Make sure the engine doesn't have excessive blow by, as this will pressurize the sump, and the only way the pressure is released is up through the oil drain. A compression test is required to determine this issue.
- Air Filter: If the air filter is heavily blocked, it will create a vacuum effect and cause oil to be sucked past the compressor end piston ring in the turbocharger.
These are the main reasons for a new Garrett GT Ball Bearing turbocharger to blow smoke or leak oil into the compressor or tubine housing. Running excessive oil pressure, or having oil push past the piston rings in the turbocharger will not damage the turbocharger in any way, unless it is happening for a long period of time
My brand new GT Ball Bearing has shaft play, and I haven't even pulled it out of the box...
Another very common question that is asked daily here at GCG Turbochargers, and it is quite a simple explanation. The ball bearings in a Garrett GT turbocharger operate on a thin layer of oil, and as the turbocharger is new, this layer of oil is not present. Once the turbocharger receives oil pressure, the shaft play will go away immediately. This has not damaged the turbocharger in any way. To assist with lubrication of the bearings prior to first start up, GCG highly recommend using Liqui Moly Turbo Super Lube, which can be found by simply typing in LM-2314 in the search bar in the Online Store.