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From: Chris Barber <cbarber@texasattorney.net>
To: "flyrotary@lancaironline.net" <flyrotary@lancaironline.net>
Subject: Oil Pressure AGAIN
Thread-Topic: Oil Pressure AGAIN
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Date: Fri, 21 Jun 2013 22:58:41 +0000
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Well, if any of y'all are curious about my progress, I am grounded in Phase=
 One.=20

I am having oil pressure problems again. The frustration is huge. To add to=
 this, most of the archive searches I have made give results that prominent=
ly feature my inquiries. <sigh>

Following my engine out over the airport in April traced to gunk in the fue=
l rail, mods were made to the fuel system. During static tests the oil pres=
sure would never come up to expectations.=20

Hoping to lick the front o-ring problem that I have had SEVERAL times now, =
I pulled the front cover to take a look see. The o-ring was torn.=20

I choose to be more assertive in trying to address this problem. I modified=
 a brass fitting by grinding the OD to make it it cleanly fit inside the fr=
ont iron (also, ground the inside diameter to keep flow as close as possibl=
e to stock) and tapped the front housing to accept the fitting to screw in.=
 I then placed an o-ring around the fitting. I did not include the silicone=
 ring this time as it kept preventing the smooth mating it the iron and cov=
er.=20

While apart, I verified the woodruff key was properly installed in the oil =
pump. The oil pump was replaced last time the cover was off. I also verifie=
d the oil pressure relief valve. It was still in place (not surprising sinc=
e it has been safety wired in following it falling out once).=20

I buttoned everything back up being meticulous that the o-ring mod seated p=
roperly. However, my oil pressure is still low. It's in the twenties (psi) =
while idling. This is not too bad as Racing Beat states this is acceptable =
at idle. But, when I rev it up to as much as 6000 (only long enough to veri=
fy trend) it only goes into the 30's. NOT acceptable.=20

The engine has had carb jets replace the e-shaft ball. I believe this can l=
ower the oil pressure a bit. Also, there is a front oil cooler installed. T=
his necessitates about a 12 foot oil line run. It is plumbed in parallel. T=
his could provide a bit lower pressure too I think.=20

I  using a mixture of Royal Purple 30, 40 and 50 oil. I added what was avai=
lable at the time.

I have yet to check the oil pressure regulator. I specifically remember ins=
talling it to torque with blue lock-tight last time I had access.=20

I plan to isolate the engine from the coolers and filter and take readings =
using a mechanical gage. Currently I have two electronic gages, one for the=
 RWS monitor and one for the SkyView monitor. They both read within a coupl=
e of psi from each other.=20

If not for this Achilles Heal I would very likely out of Phase One and plan=
ning a trip to Osh. It has been a major distraction of energy and time.=20

I know it could be bearings but the stationary gears and bearings were repl=
aced at the last rebuild. Everything else seemed in spec.=20

The front eccentric thermostat was replaced with the plug.=20

The oil is flowing as the system heats up evenly. I need to see if the hose=
s are hard while running, as the no-pistons site says, hard like a brick.=20

Insight as to what may be my problem and diagnostic course is always apprec=
iated.=20

I hope I have provided enough info and not omitted relevant information.=20

I really can't express my annoyance/anger/disgust properly.=20

Thanks again folks.=20

Chris Barber.=20
Houston
Velocity 13b

Sent from my iPhone 5=