flyrotary@lancaironline.net Mailing List Archive

Kelly,

I'm not sure but I seem to remember that some take out that oil pressure regulator, put it in a press and squish it some (end to end) which compresses the spring accordingly - which results in more oil pressure. I guess it takes longer for the spring to open. I'm unsure how this all works perhaps someone can explain it better, then I will understand it better.

Perhaps this is a way to compensate for a weakened spring and low oil pressure?

George ( down under)

Joe,

Mistral does not use the front (in the car) regulator in their backplate (although

the current production backplate is still machined for it except the opening to the

front housing is left undrilled).........They cite that the regulator spring breaks with

some regularity as the reason.......They provide for overpressure in their external

oil filter housing........They drill out the brass plug in the front housing and take

the oil directly from the pump to this housing (as suggested by Lynn in an earlier

post).........The point of all this is a suggestion to check the front regulator/spring

for proper operation.........I am not sure what a broken spring would do for oil

pressure..........Lynn jump in here !!

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

-------------- Original message from Lehanover@aol.com: --------------

In a message dated 5/31/2006 6:54:15 P.M. Eastern Daylight Time, dale.r@cox.net writes:

The bad news is that you'd be best off
with 70+ PSI at a mid-6000 RPM climb. IRRC, either Lynn or Leon
(maybe both?) recommended 10 PSI / 1000 RPM.

Dale R.

All rear relief valves through 92 open at 71.1 PSI. About 70 since no gage can see it any better than that.

The 93-95 Turbo is set at 110 PSI.

Your oil pressure sounds a little low.

If you have a front regulator it should open at 115 to restrict maximum pressure to the cooler.

And where used, prevent popping out the iron to case "O" ring.

Lynn E. Hanover