Chuck wrote:

On Friday, I flew my $650 junkyard engine for the last time with 77 hours on
the Hobbs. I have been building up another engine to swap it out with. The
old engine was running fine but has been steadily increasing oil consumption
to using one quart per hour, no signs of any visible smoke. Tonight I tore
down the old engine and it looks to be in really good shape, but the oil
seal O-rings have taken a set and no longer exert much pressure for sealing.

I am sure I damaged them during my first flight before working out oil
cooling problems during the summer and oil temps reached 238. I installed
the new engine on New Year's day and should be flying again this weekend.

The new engine was removed from my 1986 RX-7 with 112,000 miles on it. I
replaced the rear housing, all apex seals, and one set of oil seal rings.
Everything else was reused. I did some minor port shaping with epoxy,
E-shaft oil orifices and thermal bypass pellet mod's per Bruce Turrentine's
video. Thanks, Bruce the video really helps. I will report on the new engine
performance when I get it running. I am waiting on a new water pump, the one
on the new engine had a slow leak.

Happy New Year!
Chuck Dunlap

Great Chuck. Hope to see you at Tracy's rotary engine flyin at Shady Bend
and Sun & Fun in Florida this year if you can get a bit of time off around April.

Paul Lamar
 
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