<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Scott</div><div id="AppleMailSignature">Try this company. They produce Spec'd stainless exhaust for Rovers, all bolt together with hangers as to OEM.</div><div id="AppleMailSignature"><a href="http://www.doublesexhaust.com/">http://www.doublesexhaust.com/</a></div><div id="AppleMailSignature">I bought a complete pipe set for my 67 2000TC<br><br>Brian</div><div><br>On Nov 28, 2016, at 8:41 PM, Kent Kinard via Rovernet <<a href="mailto:rovernet@rovernet.org">rovernet@rovernet.org</a>> wrote:<br><br></div><blockquote type="cite"><div><span>Geoff and Gross,</span><br><span>I sense some confusion here. The "big bore exhaust" on UK spec 3500S models (with four speed transmission), refers only to the exhaust manifolds used on those engines. The exhaust pipes are of the same diameter as those used on automatics, but are of a different configuration. The tailpipes and boxes are the same. The "big bore manifolds" differ from the automatic manifolds in two respects, both of which are advantageous. They 1) are smooth on the outside with no provision for heated intake "stoves" and (2) have a larger internal cross section just above the outlet flange (though the actual outlet diameter is the same). The smooth exterior and added inside diameter just above the outlet flange help to avoid cracking. The casting also appears to be thicker. Automatic transmission exhaust pipes will mate to these stick shift manifolds without modification. The performance advantage of these manifolds is minimal but they are much more durable. I have had two sets but no longer have either. I do not believe that larger diameter pipes were a factory fitment.</span><br><span></span><br><span>Roverperhapstooexhaustively,</span><br><span>Kent K.</span><br><span></span><br><span>Scruggs Family via Rovernet wrote:</span><br><blockquote type="cite"><span>Geoff,</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>My 3500S has the 'bit bore' exhaust system but as it was installed when I</span><br></blockquote><blockquote type="cite"><span>took possession of the car in '84 I can't offer a before/after comparison.</span><br></blockquote><blockquote type="cite"><span>I bought my system from the since demised Rovers West. I've seen ads in a</span><br></blockquote><blockquote type="cite"><span>Brit magazine for stainless steel big bore exhaust systems, Falcon, I think</span><br></blockquote><blockquote type="cite"><span>was the brand, but that was years ago.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>I have a new yet-to-be-installed factory big bore system for my '67 2000TC</span><br></blockquote><blockquote type="cite"><span>that I intend to coat with a thermal barrier coating and am looking forward</span><br></blockquote><blockquote type="cite"><span>to the difference.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>A good exhaust shop should be able to replicate a system of any diameter for</span><br></blockquote><blockquote type="cite"><span>your needs.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Gross Scruggs</span><br></blockquote><blockquote type="cite"><span>Annapolis MD</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>-----Original Message-----</span><br></blockquote><blockquote type="cite"><span>From: Rovernet [<a href="mailto:rovernet-bounces@rovernet.org">mailto:rovernet-bounces@rovernet.org</a>] On Behalf Of Geoff</span><br></blockquote><blockquote type="cite"><span>McCarthy via Rovernet</span><br></blockquote><blockquote type="cite"><span>Sent: Monday, November 21, 2016 10:49 AM</span><br></blockquote><blockquote type="cite"><span>To: 'Rovernet'</span><br></blockquote><blockquote type="cite"><span>Cc: Geoff McCarthy</span><br></blockquote><blockquote type="cite"><span>Subject: [Rovernet] 3500S exhaust?</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Kent Kinard told me that the UK spec, manual transmission cars had a bigger</span><br></blockquote><blockquote type="cite"><span>exhaust system. Any for sale out there? Or, anyone with experience of</span><br></blockquote><blockquote type="cite"><span>headers on a 3500S? thanks.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span> </span><br></blockquote><blockquote type="cite"><span>Geoffrey W. McCarthy MD MBA DipAvMed</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>677 NW Melinda Ave</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Portland OR 97210</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>503-241-8468 (h)</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>503-799-3809 (m)</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span> </span><br></blockquote><blockquote type="cite"><span>-------------- next part --------------</span><br></blockquote><blockquote type="cite"><span>An HTML attachment was scrubbed...</span><br></blockquote><blockquote type="cite"><span>URL:</span><br></blockquote><blockquote type="cite"><span><<a href="http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20161121/52">http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20161121/52</a></span><br></blockquote><blockquote type="cite"><span>6ae913/attachment.html></span><br></blockquote><blockquote type="cite"><span>_______________________________________________</span><br></blockquote><blockquote type="cite"><span>Rovernet mailing list</span><br></blockquote><blockquote type="cite"><span><a href="mailto:Rovernet@rovernet.org">Rovernet@rovernet.org</a></span><br></blockquote><blockquote type="cite"><span><a href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>_______________________________________________</span><br></blockquote><blockquote type="cite"><span>Rovernet mailing list</span><br></blockquote><blockquote type="cite"><span><a href="mailto:Rovernet@rovernet.org">Rovernet@rovernet.org</a></span><br></blockquote><blockquote type="cite"><span><a href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><span></span><br><span></span><br><span>_______________________________________________</span><br><span>Rovernet mailing list</span><br><span><a href="mailto:Rovernet@rovernet.org">Rovernet@rovernet.org</a></span><br><span><a href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a></span><br></div></blockquote></body></html>