oil control

Roger Enns renns at bserv.com
Mon Jul 15 01:59:18 GMT 1996


Hi William,

I would suggest switching to #10 return (5/8") minimum.  Any restriction 
whatsoever will cause leakage through the labyrinth seal behind the 
turbine.  Also ensure that your return to sump is as vertical as 
possible, and returns above the oil level in the sump at all times.

These items are critical as the return oil is whipped into a foam as it 
passes the bearing, and needs an unobstructed path to flow properly.

Good luck,
Roger Enns (renns at bserv.com)

On Sun, 14 Jul 1996, William A. Sarkozy wrote:

> Anybody have trouble containing oil in the turbos?  I have a setup with 2
> brand-new turbos that leak oil badly into the hot section causing great
> billows of blue smoke.
> Application is SBC with high volume oil pump which delivers about 90 PSI
> cold.  Oil supply lines are #4AN and drains are #6AN back to top of oil pan
> just below the block.  I'm having trouble believing that BOTH units could
> have been assembled improperly.  Is the oil seal a mechanical unit or does
> it have some sort of "packing gland" that can be replaced?  Could I have
> damaged it by excessive pressure, or could I just turn down the pressure and
> hopefully solve the problem?  I've never read anywhere that too much oil
> (pressure) is  bad for these things.
> 
> Thanks in advance for any help you might provide.....
> 
>                                                                             
>      Bill
> 
> 



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