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Thanks for the info Perry. So it would seem that the best setup would be a mild steel system from the muffler back for the sound and stainless downpipes for the flex.</div>
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Bill Lawrence</div>
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BN1 #554</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <healeys-bounces@autox.team.net> on behalf of Perry via Healeys <healeys@autox.team.net><br>
<b>Sent:</b> Thursday, October 24, 2019 1:42 PM<br>
<b>To:</b> healeys <healeys@autox.team.net><br>
<b>Subject:</b> [Healeys] Down Pipes - The Final Saga</font>
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<p class="x_MsoNormal">Listers</p>
<p class="x_MsoNormal">As a follow up to my post on 10/18 on this exciting subject, I decided to do an experiment with a couple downpipes I had in the parts bin. Both pipes are new old stock and have never been on a car. One is stainless and the other mild
steel. Both have been laying on a shelf in the garage for at least 9 years. </p>
<p class="x_MsoNormal">The test was to measure how much deflection was noted in the flex portion of the downpipe when the tip (where it enters the muffler) is loaded with a weight. The upper portion of the pipe was firmly held by the bench vice.
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<p class="x_MsoNormal">Should have started with something less then 10 pounds but the stainless moved considerably under that weight. The mild steel did not budge.</p>
<p class="x_MsoNormal">At 47 pounds I heard a creaky noise but no movement on the mild steel. I then applied an unspecified force with my hand to the 47 pounds and no movement.
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<p class="x_MsoNormal">My conclusion is that the mild steel flex pipe, once it takes a set, ie, Gets Rusty, does not flex. It is the weak link that will fail but it might as well be a piece of regular pipe.</p>
<p class="x_MsoNormal">Perry</p>
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<p class="x_MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
Mail</a> for Windows 10</p>
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