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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks Guys for the comments. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>When I took out the motor I inspected the
exterior before cleaning it and there was zero trace of any burnt fuel on the
motor. The “goo” is definetly burnt fuel so it can only come from
the exhaust system, header, or head. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I guess I’ll just order some more
O-rings and gaskets for good measure.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b><st1:PersonName w:st="on">Derek Koopowitz</st1:PersonName><br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, December 11, 2007
10:29 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">NSRCA
Mailing List</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Hatori Short Pipe O-Rings</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><st1:PersonName w:st="on"><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Jim</span></font></st1:PersonName>,<o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I spoke to Rich at length about this... he said to take the motor
apart and to clean the o-rings (make sure they are dry and not oiled when you
put them back) and also to replace the gaskets. The simplest is to just
replace all o-rings and gaskets. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I've got the same problem on my one motor - the residue isn't black so
I know it isn't exhaust residue - it is clean fuel. There is no leakage -
all bolts are tight and the header is tight as well.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Rich sent me replacement o-rings/gaskets and I intend to do that soon
and then run the motor to see if it still leaks.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>-Derek<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Dec 11, 2007 10:49 AM, Woodward, <st1:PersonName w:st="on">Jim</st1:PersonName>
<<a href="mailto:jim.woodward@baesystems.com">jim.woodward@baesystems.com</a>>
wrote:<o:p></o:p></span></font></p>
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<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Hi
Guys,</span></font><font size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>What
is the final verdict on these O-rings? Will a warm run "melt"
the O-ring? Does the viton replacement fit tight enough over the
header? Recently my plane is getting really messy, where as before there
wasn't a drop of burnt fuel ahead of the exhaust stinger. I replaced the
o-ring but still had the mess. I pull the motor last night and checked
out everything and the motor looks great, bolts were tight, with no indication
of any leakage from the motor or header to motor/flange attachment. </span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I
am using the Nishioka spring clamp mount. All things considered and
experienced, I think I prefer the stock Hatori mount that comes with the
pipe. The Nishioka seems to allow for more fore and aft pipe slippage
during running due to the thin vertical white plastic supports (checked while running
the plane upside down to try and determine spray pattern and such - in
which I didn't find one, which leads me to believe that it starts to happen
maybe later in the flight or heat cycle, versus the small amount of running I
did as a cursory check. </span></font><font size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Thanks,</span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><st1:PersonName w:st="on"><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Jim</span></font></st1:PersonName><font size=2><span
style='font-size:10.0pt'><o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> </span></font><font
size=2><span style='font-size:10.0pt'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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