<br><font size=2 face="sans-serif">Bolly mufflers use a very different kind of resin that is more temp resistent than the ES pipes. It will become brittle over time, but will not ablate. Bolly's also eventually leak like a seive over their length eventually.</font>
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<br><font size=2 face="sans-serif">--Lance</font>
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<td><font size=1 face="sans-serif"><b>Ron Lockhart <ronlock@comcast.net></b></font>
<br><font size=1 face="sans-serif">Sent by: discussion-request@nsrca.org</font>
<p><font size=1 face="sans-serif">03/25/2003 10:11 AM</font>
<br><font size=1 face="sans-serif">Please respond to discussion</font>
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<br><font size=1 face="sans-serif"> Subject: Re: question regarding header & tuned pipe</font></table>
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<br><font size=2 face="Courier New">Lance,<br>
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Would you know, is the end of the pipe being exposed to exhaust <br>
gas a concern with the Bolly pipes & mufflers?<br>
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TIA Ron Lockhart<br>
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----- Original Message -----<br>
From: s.vannostrand@kodak.com<br>
Date: Tuesday, March 25, 2003 10:52 am<br>
Subject: Re: question regarding header & tuned pipe<br>
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> Every change in backpressure, due to the expansion chamber or <br>
> header change will cause a wave reflection, however, the effects of <br>
> necking down from 7/8 to the approx 3/4" OS pipe will not be much. <br>
The bigger problem is that if the pipe is composite (CF) you will <br>
ablate the pipe input and ruin the pipe. I've seen 3 of these for <br>
repair. The hot exhaust gasses can not be allowed to contact the end <br>
of the fibers and resin for most resins. ES pipes fail in this <br>
fashion. Some people have been successful in using a squishy coupler <br>
(like the Macs grey) but this is not a reliable setup for most people. <br>
> <br>
> The Mintor carbon fiber pipe (I have a N.I B. one for sale for <br>
> $160 including shipping) uses an aluminum inlet to prevent this. I <br>
> also have a Macs to OS adapter made from aluminum for $12.<br>
> <br>
> -Lance<br>
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