oil control

[Seth Allen]

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

> Date: Sun, 14 Jul 1996 16:35:27 -0700
> From: William A. Sarkozy <mymove at serv01.net-link.net>
> To: diy_efi at coulomb.eng.ohio-state.edu
> Subject: oil control
> 
> Hey all you turbo gurus......
> 
> 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
> 
Two things--> 
is it a diesel turbo?  The seals arent made to see much below 29 in Hg. 
With a partial vacuum (closed throttle) they will dump oil in the 
intake.  The other is placement. Hope the turbo is well above oil level 
or else it won't drain well, if at all.

Seth Allen
Western Washington University FSAE