Jim,
  My Mazda factory manual says the oil seals should be .220 to .228
 in height,  the width limit of the oil seal lip (shiney part) is
 .020 and the protrusion limit  (installed in the grooves) should be
 .020 minimum..........Get a manual if you do not have one
 already.........It will have all the engine tech data and will help
 you make heads or tails of what I just stated.........These little
 metal seals keep oil out of the engine and are very
 critical..........FWIW  -- Kelly Troyer Dyke Delta/13B/RD1C/EC2


 -------------- Original message from James Brewer
 <alpha@concordnc.com>: --------------

 Yes, I replace the oil seal o-rings. Yeah, it was smoking when I
 got it. Very low
 compression on one rotor. Replaced parts with Tracy's overhaul
 kit. Bearings in rotors were not
 replace but looked ok and measured fine. New apex seals and side
 seals. I didn't replace the metal oil rings on the rotors as they
 looked fine. How critical are these anyway and what are the
 symptoms of failure/damage?

 Jim


 On Fri, 19 Aug 2005 20:49:27 +0000, Kelly Troyer wrote:

 Jim,
 You did replace the rotor oil seal O-rings I presume ?? Was it
 smoking like that before overhaul ?? -- Kelly Troyer Dyke
 Delta/13B/RD1C/EC2


 -------------- Original message from James Brewer
 : --------------

 Guys,
 I need some help on my recent 13B rebuild for my '87 RX7.
 Thanks to all previous replies on the crank angle sensor/TDC
 settings I was able to get it to crank and run. Now for the
 diagnosis of my present problem: Engine starts and idles with
 a slight
 amount of smoking. As the engine warms up and I increase the
 RPM I get a considerable amount of smoke. The smoke does
 not smell "sweet" like it is burning coolant but maybe it
 smells different in a rotary. Smoke is white not black. With
 limited running
 I haven't noticed a drop in the coolant or coolant in the
 oil. Before I pull the engine and go thru it again I would
 like to pinpoint the

 t;> problem before teardown. I thought I was careful about the
 o-

 rings. I used Hylomar for the grooves as per Bruce
 Turrentine's tape to keep them in the grooves. Am I getting
 oil past the oil o-
 rings? Other sources or causes for my smoke? Tests I need to
 run? Help! Ed, Lynn, Leon or others.


 Jim Brewer
 Albemarle, NC


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