Mailing List flyrotary@lancaironline.net Message #58893
From: Chris Barber <cbarber@texasattorney.net>
Subject: Re: [FlyRotary] Re: Oil pressure again
Date: Sun, 26 Aug 2012 18:29:19 +0000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Cc: Rotary motors in aircraft <flyrotary@lancaironline.net>
I don't think it is the sensors as I have two and the drop is consistent on both. I have both the RWS sensor and the Dynon.   It seems to be having trouble getting in the mid 20 psi range.

I have a busy week so I think I am about to order new oil pump and O-ring and spacer  Hopefully it will arrive about the time my time frees up  I figure it can't hurt and that will pretty much make everything in the engine new except the rotors and e-shaft.

Chris

Sent from my iPhone 4

On Aug 26, 2012, at 1:15 PM, "Bobby J. Hughes" <bhughes@qnsi.net> wrote:

> Chris
>
> How much has it dropped? Could it be the sensor? I had one fail early in phase 1. Every time I pitched up the pressure would drop and trigger an alarm.
>
> Bobby
>
>
> Sent from my iPad
>
> On Aug 26, 2012, at 9:11 AM, "Chris Barber" <cbarber@texasattorney.net> wrote:
>
>> My oil pressure has dropped again. I am jumping to the conclusion it is that pesky front cover O-ring. I know I was meticulous with installing it last time. While it may be something else, I doubt it. I had the pressure valve fall into the pan a couple of years ago and it is now safety wired in. Perhaps it is the oil pump but it seems so simple and not prone to failure.
>>
>> So, to make this more than a vent, as I know mostly how to address this....contrary to the evidence that I am having to screw with it again, is there any words of wisdom y'all would care to share. Since I will at least have the front cover off (should be able to do do with engine on the plane) would this be a good time to replace the oil pump. It has not been replaced in the past do it is many years old with an unknown number of miles. Is there a "better" oil pump out there than the turbo version offered by Mazdatrix that I should ponder?
>>
>> I may have the oil ring and plastic retaining ring already if I can find them. Just gotta find the time to crack into it.  Then to continue my turbo diagnosis. Great power without intercooler (even though I found no restriction, but it is a super cheap intercooler from eBay) and blow off valve or even N/A. Obvious limited breathing with the cheap intercooler and blow off valve
>>
>> TIA.
>>
>> Chris Barber
>> Houston
>>
>> Sent from my iPhone 4
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