<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<STYLE>.hmmessage P {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
BODY.hmmessage {
FONT-SIZE: 10pt; FONT-FAMILY: Verdana
}
</STYLE>
<META content="MSHTML 6.00.6000.16825" name=GENERATOR></HEAD>
<BODY class=hmmessage bgColor=#ffffff>
<DIV><FONT face=Arial>Fred Lumb in Pennsylvania makes custom couplers for the
IMAC guys and the gas engines. He can even make them stepped inside so
that one side has a smaller diameter than the other, for example. I have
used them on my gas engines and they have lasted no problem. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>His e-mail is <A
href="mailto:lum945@aol.com">lum945@aol.com</A></FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=trexlesh@msn.com href="mailto:trexlesh@msn.com">Rex</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA-discussion</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 01, 2009 7:02 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Header
coupler</DIV>
<DIV><BR></DIV>George<BR> <BR>In a totally different project years ago, I
had a similar dilemma... I used a piece of woven
stainless<BR>tubing, inside an outer jacket. The tubing is made to slide
over heater hoses, vaccum lines on engines.<BR>I can't tell you right off hand
where to get it, but I'd bet some of the better automotive stores would
have<BR>it or could get it. I simply cut a piece a little longer
than the hi temp rubber coupler, slid it inside the <BR>coupler, then slid
both layers over the header/muffler fittings. Seemed to work well,
I never had any<BR>blow through problems again.... You could slide
this stuff into the teflon, then attach. most of the heat<BR>would
slide right on through. BTW, it was tough to cut, and
I eventually settled on a diamond wheel to <BR>get a clean
cut. The neat thing about this stuff is that it's like chinese finger
cuffs... you pull on each end<BR>and it shrinks in diameter, push it
together and it expands.<BR> <BR> <BR>Rex<BR> <BR>> Date:
Mon, 1 Jun 2009 17:07:27 -0500<BR>> From: glmiller3@suddenlink.net<BR>>
To: nsrca-discussion@lists.nsrca.org<BR>> Subject: [NSRCA-discussion]
Header coupler<BR>> <BR>> Hello all.<BR>> <BR>> I need to tap the
collective expertise here on the web.<BR>> <BR>> As some of you know,
I've been working on a gas conversion of an OS 160....it is running very well
and I'm quite happy with the weight/performance and ease of use. <BR>>
<BR>> BUT I'm having a problem with the muffler coupling. <BR>> <BR>>
I'm using a Mueller header and an aeroslave carbon pipe.....the header has a
3/4 in outer diameter. <BR>> <BR>> My first coupling material was teflon
tubing from McMasterCarr...the "thick walled" 3/4 inch ID tubing...<BR>>
<BR>> This held up pretty well as long as I had the space between the
coupled pipes very small...but I was getting contact between the pipes (that
was the metal "tinging" that you were hearing, Lance)..which eventually caused
a burr on the tube and resulted in a hole in the coupling.....So I made the
gap a little wider 1/4 inch or so and now the teflon coupler is melting
through in a flight or two.....so I need an alternative material.<BR>>
<BR>> I remember that we used to use a thick silicone coupling material for
helicopter header/muffler connections but I can't find it anymore...Surely
someone here has some ideas and a source where I can get it.<BR>> <BR>>
Let's hear it!<BR>> <BR>> Thanks in advance,<BR>> <BR>> George
Miller<BR>> _______________________________________________<BR>>
NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>
<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>