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Hi Dennis,
If that were my engine I might assume that it was the front cover
passage, not sure if the Renisis has the same issue or not. But I
don't think it is acceptable to find ANY silver shavings. My worry
now is that your bearings might be getting sloppy. Have you stuck a
telescopic magnet in the oil pan to see what you could pick up.
anyting more than contamination and you probably need to tear it down.
David
On 1/14/16, Dennis Havarlah <flyrotary@lancaironline.net> wrote:
I am seeing a decrease in engine oil pressure! About to stop flying and
start tearing the engine down.
More information:
RX8 Renesis 4 port in RV-7A. 670 total hours in flight. I fly at least 4
times a week. Mostly very short flights - 8 to 10 minutes each way to play
tennis. I use Mobil 1 oil (15 - 50 W). I change oil at 50 hours. Check
oil filter media for particles each time. Burn regular mogas with ethanol
and add 0.6 oz/gal oil ( 2 stroke outboard and marvel mixed ).
Over the past 100 hours my oil pressure has slowly decreased from 80 psi to
as low as 72 psi in cruse. Oil temps are about 180 deg. F. Idle oil
pressure is 50 - 53 psi at 1500 engine rpm when I land.
When I inspect the oil filter media I find only a very few shinny particles
on the oil filter media and have not seen an increase in number. I have to
look win direct sunlight to see them.
Is there anything I should be looking at - oil pump, oil pressure regulator
- ???
I'm contemplating taking off the oil pan this weekend. My oil and water
radiators are mounted under the engine so this will take some time and be
messy!
Thanks for any and all info.
Dennis Haverlah
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