Start-up at 70F ambient gets me 80 - 85PSI.  Once the oil gets hot I'm seeing about 15 or so at idle, 25 PSI at 2000 rpm, 45 PSI at 3500 rpm, and maybe 60 PSI at 4000.  Talking about today with Tracy he felt it was marginal, and was wondering if this might be normal with a combination of a turbo and a redrive both taking pressure.   

 

You have an FD engine right?  I would assume you also have the stock FD regulator.  You have a redrive that takes extra oil, however you only have one turbo, rather than two as the FD's do, so I'm thinking that makes you even.  Here's the direct info from the FD manual.  Sounds like your pressure is  a little low.   

 

-Start the engine and let it warm up to operating temperature. 

- run the engine at 3,000 rpm, and not the gauge reading. 

- Oil pressure: 50 psi min.

 

You aren't using the stock Mazda oil pressure sender are you?  Those are odd units, and are known to be crap.  If you're trying to use one of those, stop right now and get a decent sender.    

 

Good luck,

Rusty (can't wait to see what's inside the smoker)