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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Look at the bottom of the turbo. There should be small tube out of the center section which is the oil drain line.

On a 930 that tube drains into a small vessel that hangs off the bottom of the turbo. From that vessel there is another tube that that goes to the left front of the motor and attaches to a pump that is driven off the end of the drivers side cam shaft. It then is pumped back to its own connection to the oil tank.

If you have such a set up someone went to a lot of trouble to build up a turbo on an SC case.

If the drain out of the turbo is plumbed to drain directly into the chain cover or into the bottom of case where the oil drain plug is, it is probably an SC with the turbo intake and exhaust bolted on.

And or you can check the compression. I forget but I think with turbo pistons your compression would be around 135psi. On an SC it might be around 160psi or such. Anyway if you posted your results someone her could probably be able to tell.

Can you take a picture of the bottom of the turbo and post it?

Last edited by 911st; 11-11-2010 at 08:50 PM..
Old 11-11-2010, 08:48 PM
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