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Date: Fri, 3 Jul 2009 09:43:13 -0700
Message-ID: <1c23473f0907030943n628d39d0v4bafed3b7e545b30@mail.gmail.com>
Subject: Re: [FlyRotary] Re: INJECTION OIL IN FUEL
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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On Fri, Jul 3, 2009 at 8:54 AM, Ken Welter <rotarycoot.ken@gmail.com> wrote:

>  My engine is a 1986 13B with 88 hrs since remanufacture.
> I fly a Zenair Zenith with a cogbelt PSRU and a Warp Drive 3-blades prop
> and  this engine never runs above 5700 rpm
> When I installed this engine in my Zenith I removed the metering oil
> pump and have been using two stroke injection oil mixed in the
> automobile  fuel  ( 87 octane gasoline)
> At first I used a volume mix of 128:1 gas to oil and soon noticed an
> increase of engine lubricating oil volume in the oil pan
> I have gradually reduced the volume mix of gas to oil to 140:1 but there
> is still a slight increase of engine lubricating oil in the pan.
> Also a local mechanic has mentionned that the two stroke injection oil
> is degrading the 20W-50 engine oil.
> How much can I reduce the volume mix of gas to oil ?
> Please advise
>
> Yvon
>
>
>
>
>   Yes you will get an oil accumulation and there is no getting around it,
> I would mix at no less than 100 to 1 ratio, I have seen no problems with the
> 2-stroke oil mixing in the case oil and only change my oil about every 200
> hrs.
>  Ken
>


I would ditto what Ken said.  I tried reducing the amount of 2 stroke until
there was minimal accumulation, but I ended up with a stuck side seal and
had to do a re-build.  Could have been from detonation or lack of oil, but I
decided to stop taking chances.  The dilution still works out to be just a
couple of quarts in a 7 quart system, so the real engine oil is still around
for most of the work.  I use Mobile 1 (or any full synthetic) - thinking
that it will be more stable for the gear box lube.
-- 
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

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<br><br>
<div class=3D"gmail_quote">On Fri, Jul 3, 2009 at 8:54 AM, Ken Welter <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:rotarycoot.ken@gmail.com">rotarycoot.ken=
@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>
<blockquote type=3D"cite">My engine is a 1986 13B with 88 hrs since remanuf=
acture.<br>I fly a Zenair Zenith with a cogbelt PSRU and a Warp Drive 3-bla=
des prop<br>and=A0 this engine never runs above 5700 rpm<br>When I installe=
d this engine in my Zenith I removed the metering oil<br>
pump and have been using two stroke injection oil mixed in the<br>automobil=
e=A0 fuel=A0 ( 87 octane gasoline)<br>At first I used a volume mix of 128:1=
 gas to oil and soon noticed an<br>increase of engine lubricating oil volum=
e in the oil pan<br>
I have gradually reduced the volume mix of gas to oil to 140:1 but there<br=
>is still a slight increase of engine lubricating oil in the pan.<br>Also a=
 local mechanic has mentionned that the two stroke injection oil<br>is degr=
ading the 20W-50 engine oil.<br>
How much can I reduce the volume mix of gas to oil ?<br>Please advise</bloc=
kquote>
<blockquote type=3D"cite">Yvon</blockquote>
<blockquote type=3D"cite"><br></blockquote>
<div><br></div>
<div><br></div>
<div>=A0<font color=3D"#0000ff"> Yes you will get an oil accumulation and t=
here is no getting around it, I would mix at no less than 100 to 1 ratio, I=
 have seen no problems with the 2-stroke oil mixing in the case oil and onl=
y change my oil about every 200 hrs.</font></div>

<div><font color=3D"#0000ff">=A0Ken</font></div></div></blockquote></div><b=
r><br clear=3D"all">
<div></div>I would ditto what Ken said.=A0 I tried reducing the amount of 2=
 stroke until there was minimal accumulation, but I ended up with a stuck s=
ide seal and had to do a re-build.=A0 Could have been from detonation or la=
ck of oil, but I decided to stop taking chances.=A0 The dilution still work=
s out to be just a couple of quarts in a 7 quart system, so the real engine=
 oil is still around for most of the work.=A0 I use Mobile 1 (or any full s=
ynthetic)=A0- thinking that it will be more stable for the gear box lube.<b=
r>
-- <br>David Leonard<br><br>Turbo Rotary RV-6 N4VY<br><a href=3D"http://N4V=
Y.RotaryRoster.net">http://N4VY.RotaryRoster.net</a><br><a href=3D"http://R=
otaryRoster.net">http://RotaryRoster.net</a><br>

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