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<DIV><FONT face=Arial size=2>Same experience here. I've got 2 2.25" rise
MAC headers that were bent slightly and then cut about 1.5" after 2.25"
rise. Both have over 1,000 flights and no problems with breakage or
burning up couplers. Currently using Teflon couplers w/ the constant
tension spring clamps (Central has them).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dave</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=mups1953@yahoo.com href="mailto:mups1953@yahoo.com">mike mueller</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, March 01, 2004 8:48
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: OS1.40 Pipe</DIV>
<DIV><BR></DIV>
<DIV> Lance, I have the same problem with the couplers burning out when
they are too close to the engine and I don't have a problem with bending my
headers the same way Lance does it. Mike<BR><BR><B><I>Lance Van Nostrand
<<A
href="mailto:patterndude@comcast.net">patterndude@comcast.net</A>></I></B>
wrote:
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I'm
not so sure Eric. I've seen people try to cut the header in the rise<BR>and
the couplers used kept burning out. the exhaust temps are very hot<BR>there,
but cool quickly. You really don't want a coupler within 8" of
the<BR>exhaust outlet.<BR>My suggestion, the solution I've used for years
with Macs headers, is to<BR>use an appropriately sized forstner bit (e.g.
7/8") and drill a hole in the<BR>end of a 2x4. Slide in the header and use
the 2x4 as a bending arm. The<BR>hole supports the header and the 2x4 gives
you leverage. Oh, don't leave<BR>the header bolted to the engine!! Bolt it
to something else.<BR>--Lance<BR><BR>----- Original Message ----- <BR>From:
"Henderson,Eric" <ERIC.HENDERSON@GARTNER.COM><BR>To:
<DISCUSSION@NSRCA.ORG><BR>Sent: Sunday, February 29, 2004 7:21
PM<BR>Subject: RE: OS1.40 Pipe<BR><BR><BR>They are hard to bend without
kinking. I usually cant the engine to the side<BR>to line up the
header.<BR><BR>If it is a MAC, one piece header - no exhaust stub and
o-rings - it is<BR>advisable to cut the header half way up the header rise,
and fit a second<BR>coupler. This will allow you to rotate the tubing and
also provide<BR>protection from header
fractures.<BR><BR>Regards,<BR><BR>Eric.<BR><BR>-----Original
Message-----<BR>From:
discussion-request@nsrca.org<BR>[mailto:discussion-request@nsrca.org]On
Behalf Of Jeff Hughes<BR>Sent: Sunday, February 29, 2004 7:28 PM<BR>To:
discussion@nsrca.org<BR>Subject: OS1.40 Pipe<BR><BR><BR>Now that I have my
OS1.40 mounted in my new focus, I find that the pipe hits<BR>the side of the
pipe tunnel due to the right thrust. Can I just bend the<BR>pipe, or should
I heat it first?<BR><BR>=====================================<BR># To be
removed from this list, send a message to<BR>#
discussion-request@nsrca.org<BR># and put leave discussion on the first line
of the body.<BR>#<BR><BR>============# To be removed from this list, send a
message to<BR># discussion-request@nsrca.org<BR># and put leave discussion
on the first line of the
body.<BR>#<BR><BR>=====================================<BR># To be removed
from this list, send a message to <BR># discussion-request@nsrca.org<BR>#
and put leave discussion on the first line of the
body.<BR>#<BR></BLOCKQUOTE></DIV>
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