Tracy,
Wait...  am I reading this correctly?   Your suggestion is to put the turbocharger oil drain on the spark plug side.  Seems like a long way away from the turbocharger to move the drain.   Is there some benefit to doing this?   I could see a benefit to doing this for the redrive, but not for the turbocharger.  Am I somehow missing something?


Thanks!
Bill Mason
Turbo 13b, RWS RD-1b, EC2


From: Tracy <rwstracy@gmail.com>

Subject: Re: [FlyRotary] Turbo oil drain on NA 13b front cover
Date: Tue, 26 Jun 2012 16:15:10 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>




Option 1. - No, for the reasons you said.
2. - OK, but more trouble than it's worth.
3. - Would work.
4. - Works fine .

Best is to drill & tap foot of rear rotor housing on spark plug side.

Tracy

Sent from my iPad

On Jun 26, 2012, at 1:59 PM, William Mason <instructorbill@msn.com> wrote:

Reading on an rx7 forum I've learned that there are multiple options for the turbo oil drain on an NA engine.


I can weld a bung into the oil pan
I can change the front cover to the Turbo 2 one
I can drill and tap the NA cover to accept a -10AN fitting
I can make a oil metering pump block-off plate that will accept a -10AN fitting


My concerns are that that option one would put the drain oil below the oil level and add restriction. Option 2 would upset an already rebuilt engine... don't mess with perfection. Option 3 of the available areas to drill and below the OMP pad and further down on the cover... the slanted section, which one would be better?


Option 4 seems best but it seems a little high and it too may cause some restriction.


Has anybody used the OMP block-off-plate drain idea with any success?
Should I just put my big-boy pants on and take the front cover off and either switch the front cover or drill/tap or tig a bung to the lower section of the front cover well below the OMP pad?


Advice sought.


Regards,
Bill Mason