mritter509(at)msn.com
Guest
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 Posted: Tue Jul 31, 2007 3:04 pm Post subject: What Spark Plugs are people using for Top/Bottom and what i |
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I ordered the UREM38S plugs from Skygeek about three weeks ago. First they
told me they would ship 7/15 and now I'm being told it will be the end of
July - maybe. Anyway I cleaned the bottom plugs (Lightspeed on top) and
completed the annual. If and when they come in I'll install at next oil
change.
Mark
N410MR
| Quote: | From: "Doerr, Ray R [NTK]" <Ray.R.Doerr(at)sprint.com>
Reply-To: rv10-list(at)matronics.com
To: <rv10-list(at)matronics.com>
Subject: What Spark Plugs are people using for Top/Bottom and
what ignition?
Date: Tue, 31 Jul 2007 10:33:58 -0500
I now have almost 300 hours on my RV-10 and it was time to
look into maybe a better plug to use for the bottom set. I talked to
Unison at Osh and they had thought the Unison UREM37BY would be a good fit
since it had the extended electrode for the bottom plugs. I then looked at
an Service Instruction publication
http://www.lycoming.textron.com/support/publications/service-instructions/pdfs/SI1042Y.pdf
on Lycoming web site for Approved Spark Plugs and they did not list the
37BY as an approved plug. So now I have ordered the Unison UREM38S which
are the uridium fine wire plugs at $44 each. They by the way were listed
as approved plugs. Currently I have UREM38E on both top and bottom with
Slick Mags on both sides, this is how it came from America's Aircraft
Engines.
Anyway I will try the new iridium plugs on the bottom and see
how they perform. Does anyone have any idea on how long the dirrent plugs
should last in our RV-10's?
On a different note, I have also destroyed one EGT probe that
came from Dynon. I have 6 EGT probes and my #2 cylinder was telling me it
was > 1550 when the others were around 1400 while running LOP. I knew
something was not right so I swapped the EGT probes in the #2 and #4
cylinders and went flying. Guess what, now the #4 cylinder was hotter than
the rest by 150 degrees. So now I know that the EGT is faulty. Both
probes look the same and I was wondering if cleaning them somehow will
help. I posted a message on Dynon's board and then thought that getting
200 - 300 hours on an EGT probe while running LOP was about right. They
said they have always thought of EGT probes as consumables. First off, I
would think that running LOP would be easier on the probe since the EGT are
down because of reduced power. Can anyone share there experiences on EGT
probes and there expected life?
Thank You
Ray Doerr
40250
N519RV (Hobbs 292)
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