Check valve for turbocharger oil supply?

[Mike_Lettrich]

Is anyone running a check valve on their oil supply line to the turbocharger to keep oil out of the turbo's center section when the car is not running?

Here is the problem I am trying to correct: I am running a BAE turbo setup on my SC. It runs well, but after shutting down oil continues to drip through the turbo's center section into the turbos' catch tank. If the car sits for a long time (like over a week), that dripping oil more or less fills up the catch tank. (Incidentally, BAE systems did not use a catch tank in their stock configuration. I was having some oil return problems like Pat Keefe documented in his threads with his BAE setup, so I fabricated a 930 style catch tank and use an electric oil pump to scavenge the oil. Works very well, BTW).

I think that some type of check valve on the oil supply line that would open when the oil system is pressurized but closed when it is not would be helpful to prevent this.

Is anyone running some type of check valve setup, and if so, could you provide me with a source? Thanks!

Mike

[sand_man]

I know nothing about BAE turbos, but this thread might be useful:
http://forums.pelicanparts.com/porsche-911-technical-forum/208416-930-oil-drip-tank-fills-when-engine-off-causes-smoking.html#post1781031

[NathanUK]

Seems you need to resort to the stock 930 turbo oil supply with the ball.

[equality72521]

Sounds like I have this problem. No ball. I replaced the pressure switch while the engine was out and I didn't see a ball bearing. Mine also smokes after sitting for a few days.

[NathanUK]

You have to get the ball out with a magnet, it's not easy to see.

[930gt-40r]

I have a check valve in the top of my turbo, I obtained it from Tial. The purpose for mine is to be run on a ball-bearing turbo though.