<html><div style='background-color:'><P>Mac makes 140RX headers in two 'rises' - one will work fine with the Focus II. Part #s: </P>
<P>4742: 1.75" rise<BR>4743: .75" rise<BR>4744: 2.25" rise. </P>
<P>info from MACS catalog at <A href="http://www.macspro.com/macs2003.pdf">http://www.macspro.com/macs2003.pdf</A></P>
<P>...though I'd guess that as long as the relieved area of the firewall is properly sealed and fuelproofed, I'll bet there's plenty of beef to allow for trimming a little bit... <BR></P>
<P>-Hope this helps <BR>- Rick <BR></P>
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From: <I>"Robert Harden" <rharden1@cox.net></I><BR>To: <I><discussion@nsrca.org></I><BR>Subject: <I>OS 1.4 RX Header and Pipe installation in Focus II</I><BR>Date: <I>Tue, 13 Sep 2005 13:45:47 -0500</I><BR><BR>
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<DIV><FONT face=Arial size=2>I would like some advise for installing a header and pipe in a Focus II. I have the OS 1.4 RX engine, the OS 72102100 Header and the OS T-6010 Tuned Silencer. My problem is that the header has interference with the firewall. I don't really want to remove material from the firewall to gain clearance. Is there another header that I could use? My other question is if the OS Tuned Silencer is the best choice? I also would like to know what the length should be if the tuned silencer is used. I am planning to use an APC 17 X 13 prop and Magnum # 1 2 cycle fuel (approx 23% nitro). All suggestions are welcome.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Bob Harden</FONT></DIV><BR></FONT></BLOCKQUOTE></div></html>