<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Good point. At one time my resonator developed a crack at the input pipe. Another time, the head pipe had a rust-through hole near the junction. In both cases, the perceived exhaust noise increased immensely. Welding these up returned the sound to normal.<div class=""><br class=""><div class="">
<div class="">--</div><div class="">Max Heim</div><div class=""><a href="mailto:mvheim@sonic.net" class="">mvheim@sonic.net</a></div><div class=""><br class=""></div><br class="Apple-interchange-newline">
</div>
<br class=""><div><blockquote type="cite" class=""><div class="">On Nov 28, 2017, at 8:04 AM, Charley & Peggy Robinson via Mgs <<a href="mailto:mgs@autox.team.net" class="">mgs@autox.team.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">I'e been rethinking this. First, I used the term "front muffler" in my earlier post. Actually, it's not a muffler; it's a resonator. It's essentially an expansion chamber whose purpose is to cancel out the high frequency exhaust pulses; the sharp barks IOW. Some resonators have a shell within a shell with insulation in between to do some quieting; some don't.</span><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Since it appears that the exhaust sound you object to is localized in the cockpit area, I wonder if your resonator might be cracked or possibly touching the underside of the floor pan or a loose connection. If not, increasing the resonator volume or its type of construction & insulation might be a way to go. Just have to get the car on a lift and have a look-see.</span><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">CR</span><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">On 11/27/2017 6:40 PM, John Difede via Mgs wrote:</span><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Thanks to all for your advice and comments. I am reconsidering my idea to purchase a new exhaust system because I have no guarantee that it will be quieter than my current exhaust. I am thinking of replacing my middle “bomb box” section with the oval shape muffler and see where I end up. If need be I can then replace the rear section. I am planning to use mild steel connected to the stainless front pipe.<br class=""><br class="">John DiFede<br class="">1973 MGB<br class="">Sent from my iPhone<br class="">_______________________________________________<br class=""><br class=""><a href="mailto:Mgs@autox.team.net" class="">Mgs@autox.team.net</a><br class="">Donate: http://www.team.net/donate.html<br class="">Suggested annual donation $12.75<br class="">Archive: http://www.team.net/archive<br class="">Forums: http://www.team.net/forums<br class="">Unsubscribe:<span class="Apple-converted-space"> </span><a href="http://autox.team.net/mailman/options/mgs/ccrobins@ktc.com" class="">http://autox.team.net/mailman/options/mgs/ccrobins@ktc.com</a><br class=""></blockquote><br style="font-family: Verdana; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Verdana; 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