[FC] oil pressure on greenbrier

[The Source, Inc.]

Gentlemen,
An excerpt from our oil pressure switch product bulletin:

> Replacement Series Oil Pressure Switch Part # RS OPS 
> 1/8" - 27 N.P.T. dry seal thread,  3 - 7= lbs. pressure, normally closed.
> Spade terminal electrical connection per original. OEM mfg.
>
> Ultra Series Oil Pressure Switch  HP" = High Pressure  Part # US OPS HP -
> 1/8" - 27 N.P.T. dry seal thread,  8 - 12  lbs. pressure, normally closed.
> Stud, nut terminal electrical connection - supplied with new solder 
> less "ring" terminal.
>
> Our HP Higher Pressure switch will indicate low oil pressure 
> considerably sooner than with a factory stock oil pressure switch; the 
> "idiot light" would indicate to you that there was a temperature and 
> or pressure problem (at three (3) psi oil pressure wouldn't your 
> engine already be damaged ! )


I measure oil pressure at the factory switch location with a calibrated 
gauge
and we always replace both the oil filter & oil cooler bypass valves 
during overhaul procedures
I have found that with either 10w 30 & 10w 40 at idle cold +40 psi  hot 
+15 psi

We also have a modernized - improved oil pressure bypass valve.
An adjustable oil pressure regulator is under development.
If installing a high volume pump  take the time and effort to enlarge - 
port  the small restrictive pump ports in the rear housing + 300%  in 
size and also drill the case itself  main bearing & cam oil feeds for 
more flow; not pressure.  
De burr , De flash, and Clean up the  oil drain backs - it  only take 
about 6 hours ...with proper tools.
David

N2VZD@aol.com wrote:

>thje oil pressure on my rampy with 110 is a touch over 40 cold abt 20 idle. 
>it drops to just over 30 hot  i mean hot! and 15 at idle(abt 600 rpm).  i just 
>ran the same gauge(on a adapter bolt for the filter) on another 110 pg warmed 
>up with about the same readings. he was seeing oil lite on so i checked with 
>gauge to make sure. we both run 10w30.   regards tim colson