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<DIV><FONT size=2 face=Arial>This is beyond my experience; I had heard that the
1.70 vibrated much less than the 1.40 L. Maybe I heard something that's
not true? But, if my experience means anything, I wouldn't hesitate to
give it a try. I can't guarantee the same great results that I got with
the 1.40 L, however, it's an easy modification that can be put back again if no
gains are realized. IMHO.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bill Glaze</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=jcwilsonjr@comcast.net href="mailto:jcwilsonjr@comcast.net">Jerry
Wilson</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">'General pattern
discussion'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, December 06, 2009 12:44
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] was 1.40
L vibrations now DZ170</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">My son has a DZ170 on
Hyde mount that is also a beast on idle. Wonder if a shim might help
it?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
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face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center SIZE=2 width="100%">
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT size=2 face=Tahoma><SPAN
style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B><FONT
size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt"> <A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Bill Glaze<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, December 05, 2009 1:46
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <st1:PersonName
w:st="on">General pattern discussion</st1:PersonName><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [NSRCA-discussion] 1.40 L
vibrations</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Many thanks to Jerry Stebbins for
his suggestion to cure the extreme vibration of my Y.S. 1.40
L. Richard Verano of Y.S. services was kind enough to send me a
head shim for the engine. The shim was only .0085" thick, but it
did the trick. The engine is now markedly smoother at all rpm ranges,
and idles much more smoothly, The transition to high speed is immediate,
with no hesitation or burping. And, it only cost me 200 rpm at top speed,
(WOT.)</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Should I choose to, or need to,
obtain the extra rpm's, I can do so with 30% heli fuel. I can't believe
it's the same engine. It's gone from being an expensive paperweight, to
a viable powerplant.</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Many thanks to all who replied;
this list is such a great source of help!</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Bill
Glaze</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT size=2 face=Arial><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">NSRCA
2388</SPAN></FONT><o:p></o:p></P></DIV></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE></BODY></HTML>