Turbo Oil Leak

patkeefe · 09-05-2006, 06:41 AM

Todays problem is oil leaking from the turbo compressor housing. I don't have any photos here at work, but when I started the engine yesterday, that's where it looked like it was coming from. I don't believe I have enough pitch from the bottom drain to the chain cover. Turbo is a Rajay T04B from a BAE kit, pressure feed at top, gravity drain in bottom. Typical setup.

I'll try draining it into a bottle tonight, and see if that alleviates the problem. As I have never seen a tubo leak like this, I ask you all for input.

Thanks!
Pat

mb911 · mb911's Garage

If the engine burns oil(because of break in) the compressor will condense the oil and caus eit to drip from the bottom of the housing. . Also the top line could be loose a bit and weap down looking like its leaking from the housing. also did you put a restrictor inline????? if not it could be blowing out the seals and weaping down as well

patkeefe · 09-05-2006, 07:46 AM

No restrictor in the feed line, which is one diameter smaller than the drain line. I know this used to work ok from the PO. Not burning any oil after the initial start up. Of course, I only have about 4 minutes of run time on the engine. I'm wondering about the bearings, which I inferred to be OK from checking the shaft radial and axial play.

patkeefe · 09-07-2006, 04:11 AM

Looks like the drain fitting carrier block was evidently not real flat, so there was a bad mating surface to the turbo. I filed it flat. We'll try that fix after work tonight.

BTW, the turbo ain't making any positive pressure at 3-4k RPM. May be a bearing issue keeping the turbine from spinning freely. Good thing this is an easy bolt on application!