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From: James Brewer <alpha@concordnc.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Date: Fri, 19 Aug 2005 21:58:47 -0400
Message-ID: <2005819215847.046304@alphasys>
In-Reply-To: <list-675464@logan.com>
Subject: Re: [FlyRotary] Re: Rotary Diagnosis please
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Thanks, Kelly.  I have a manual and I measured the oil seals but I may have
missed measuring the height.  These rotary engines are simple with subtle
complexities.  I think Ed said he could build on in 30 minutes, of course=
 he's 
had experience.;-)  Maybe after I've rebuilt this one several times I'll get=
 it
right. :-(  

Jim


On Sat, 20 Aug 2005 01:47:37 +0000, Kelly Troyer wrote:
>=A0Jim,
>=A0 My Mazda factory manual says the oil seals should be .220 to .228
>=A0in height, =A0the width limit of the oil seal lip=A0(shiney part) is
>=A0.020 and the protrusion limit =A0(installed in the grooves) should be
>=A0.020 minimum..........Get a manual if you do not have one
>=A0already.........It will have all the engine tech data and will help
>=A0you make heads or tails=A0of what=A0I just stated.........These little
>=A0metal seals keep oil out of the engine and are very
>=A0critical..........FWIW=A0=A0-- Kelly Troyer Dyke Delta/13B/RD1C/EC2
>
>
>=A0-------------- Original message from James Brewer
>=A0<alpha@concordnc.com>: --------------
>
>
>>=A0Yes, I replace the oil seal o-rings. Yeah, it was smoking when I
>>=A0got it. Very low
>>=A0compression on one rotor. Replaced parts with Tracy's overhaul
>>=A0kit. Bearings in rotors were not
>>=A0replace but looked ok and measured fine. New apex seals and side
>>=A0seals. I didn't replace the metal oil rings on the rotors as they
>>=A0looked fine. How critical are these anyway and what are the
>>=A0symptoms of failure/damage?
>>
>>=A0Jim
>>
>>
>>=A0On Fri, 19 Aug 2005 20:49:27 +0000, Kelly Troyer wrote:
>>>=A0Jim,
>>>=A0You did replace the rotor oil seal O-rings I presume ?? Was it
>>>=A0smoking like that before overhaul ?? -- Kelly Troyer Dyke
>>>=A0Delta/13B/RD1C/EC2
>>>
>>>
>>>=A0-------------- Original message from James Brewer
>>>=A0: --------------
>>>
>>>
>>>>=A0Guys,
>>>>=A0I need some help on my recent 13B rebuild for my '87 RX7.
>>>>=A0Thanks to all previous replies on the crank angle sensor/TDC
>>>>=A0settings I was able to get it to crank and run. Now for the
>>>>=A0diagnosis of my present problem: Engine starts and idles with
>>>>=A0a slight
>>>>=A0amount of smoking. As the engine warms up and I increase the
>>>>=A0RPM I get a considerable amount of smoke. The smoke does
>>>>=A0not smell "sweet" like it is burning coolant but maybe it
>>>>=A0smells different in a rotary. Smoke is white not black. With
>>>>=A0limited running
>>>>=A0I haven't noticed a drop in the coolant or coolant in the
>>>>=A0oil. Before I pull the engine and go thru it again I would
>>>>=A0like to pinpoint the
>>>>
>>>=A0t;>=A0problem before teardown. I thought I was careful about the
>>>=A0o-
>>>
>>>>=A0rings. I used Hylomar for the grooves as per Bruce
>>>>=A0Turrentine's tape to keep them in the grooves. Am I getting
>>>>=A0oil past the oil o-
>>>>=A0rings? Other sources or causes for my smoke? Tests I need to
>>>>=A0run? Help! Ed, Lynn, Leon or others.
>>>>
>>>>
>>>>=A0Jim Brewer
>>>>=A0Albemarle, NC
>>>>
>>>>
>>>>=A0--
>>>>=A0Homepage: http://www.flyrotary.com/
>>>>=A0Archive and UnSub:
>>>>=A0http://mail.lancaironline.net/lists/flyrotary/
>>
>>
>>=A0--
>>=A0Homepage: http://www.flyrotary.com/
>>=A0Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/