REFLECTOR: CHT update and sealing up the cabin

[Geoff Gerhardt]

Guys,

So, I've finally cooled down my hot #3 cylinder.  It had been going up to
+430F on climb out.  Some rather aggressive mods to the intake plenum got
it down to 420F max so I turned my attention to a combustion problem.  The
EGT was always higher than the others and it always peaked first (~20deg
before the others).  So, I removed the injector, ultrasonicated it in
acetone, twirled a drill bit thru it (#72, I think) as well as cleaned and
gapped both spark plugs.  Took it out today when there was a break in the
clouds and did an aggressive climb to 10k' - all CHT and EGT's level.  None
got above 395F on a full power climb to 10K (it is cool here, tho - ~60F).
 Once I got to altitude, I was able to go LOP and #3 didn't peak first -
they all peaked very close to each other.  Nice to have that problem solved.

I also piped my oil breather into the exhaust - seemed to work well, no
more oil streaks.

Because its starting to get cool here, I'm thinking about cabin heat.  I've
been trying to seal up the cabin, but still have lots of drafts.  I've
sealed the area between the canard and dog house cover.  I'm debating
whether to try to seal the nose gear doors.  Has anyone found a good
solution for that?  Also, does anyone know of any rubber bellows to use on
the rudder pedal connections to the bell crank?  I've been trying to find
something used in maybe from a master cylinder of a car, or maybe a clutch
linkage thru the firewall.  If I can't seal up the nose gear doors
effectively, then I'll have to try to seal up the slot the elevator push
rod goes thru.

Geoff
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