<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 10pt; color: #000000"><div>When I first put my '74-1/2 car on the road after restoring it (thinking at the time that it was a '75), I had the dual stainless system from Moss. I had a "warm" street profile grind on the cam, the head was ported and polished, and the header was machine matched to the head surface. I'd done all this right, but I had a lot of trouble with fuel percolation in city traffic, in Vancouver, Canada, so we're talking atmosphere temps in the high 70's, occasionally low 80's...not crazy hot. And, it was too loud. I had a custom heat shield made to protect the fuel bowls, which helped only a little. After one summer of grief, I took it all off and went back to the stock pipe and muffler system. If I noticed any decrease in performance, it was marginal. And...the true TR6 sound is more attractive to me than the racket that I got from the dual mufflers. I run stock carbs and what I have done, which made a huge difference, is enlarge the air intake holes in the air filter box. So to summarize, mine's strictly a street car. I have a warmed up street cam profile, port and polished head, the stock manifold, pipes and muffler and increased air intake to the carbs. My car's faster than any other later-model TR6 that I've gone up against. The early cars had more HP to begin with so I don't compare my car to one of those.</div><div><br data-mce-bogus="1"></div><div>Colin</div><div>74-1/2</div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>6pack-request@autox.team.net<br><b>To: </b>6pack@autox.team.net<br><b>Sent: </b>Wednesday, December 13, 2017 11:00:01 AM<br><b>Subject: </b>6pack Digest, Vol 38, Issue 1<br></div><br><div data-marker="__QUOTED_TEXT__">Send 6pack mailing list submissions to<br> 6pack@autox.team.net<br><br>To subscribe or unsubscribe via the World Wide Web, visit<br> http://autox.team.net/mailman/listinfo/6pack<br>or, via email, send a message with subject or body 'help' to<br> 6pack-request@autox.team.net<br><br>You can reach the person managing the list at<br> 6pack-owner@autox.team.net<br><br>When replying, please edit your Subject line so it is more specific<br>than "Re: Contents of 6pack digest..."<br><br><br>Today's Topics:<br><br> 1. exhausting question (Yahoo)<br> 2. Re: exhausting question (Bob Labuz)<br> 3. Re: exhausting question (Irv Korey)<br> 4. Re: exhausting question (Jim Jones)<br><br><br>----------------------------------------------------------------------<br><br>Message: 1<br>Date: Wed, 13 Dec 2017 16:04:30 +0000 (UTC)<br>From: Yahoo <brucesimms2003@yahoo.ca><br>To: 6pack@autox.team.net<br>Subject: [6pack] exhausting question<br>Message-ID: <1640334927.4636436.1513181070287@mail.yahoo.com><br>Content-Type: text/plain; charset="utf-8"<br><br>After 20 years, I need to replace the custom exhaust and the header that came on my 73 in 1997.? ?Looking at Ansa,? but wanted to get folk's opinions and recommendations.? ? On the header, I'm wondering if I should simply go back to an exhaust manifold that's correct for my year,? ?I hear that the later exhaust manifold actually flows okay.? ? ? This is strictly a street car that typically doesn't see high revs.? ? If I stick with header, the choice seems to be Pacesetter or one of the SS ones from England.? ?Head shaved to give about 9.3 compression.? ?Early TR6 PI type camshaft.? ?Crane ignition, SU carbs. KN filters<br>The general tone of on-line comments on monza exhausts for TR6 isn't enthusiastic.<br>I was advised that getting a pre-built exhaust may be way to go for TR6 as needed bends are trickier for a local exhaust shop.<br>cheers & thanks,? ?Bruce Simms<br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://autox.team.net/pipermail/6pack/attachments/20171213/65cd95ce/attachment-0001.html><br><br>------------------------------<br><br>Message: 2<br>Date: Wed, 13 Dec 2017 11:20:50 -0500<br>From: Bob Labuz <yellowtr@adelphia.net><br>To: Yahoo <brucesimms2003@yahoo.ca>, 6pack@autox.team.net<br>Subject: Re: [6pack] exhausting question<br>Message-ID: <714b553d-dda5-d327-4a16-280817f8596f@adelphia.net><br>Content-Type: text/plain; charset="utf-8"; Format="flowed"<br><br>Bruce,<br><br>I went with a Bell sport dual exhaust for my 72. It has the stock dual <br>down pipe manifold. I think the 73 used the same manifold. It is a dual <br>muffler system.<br><br>Wonderful fit and sound is great.<br><br>I have Bell on all my Triumphs. Very satisfied.<br><br>Bob<br>On 12/13/2017 11:04 AM, Yahoo via 6pack wrote:<br>> After 20 years, I need to replace the custom exhaust and the header <br>> that came on my 73 in 1997.? ?Looking at Ansa,? but wanted to get <br>> folk's opinions and recommendations.? ? On the header, I'm wondering <br>> if I should simply go back to an exhaust manifold that's correct for <br>> my year,? ?I hear that the later exhaust manifold actually flows <br>> okay.? ? ? This is strictly a street car that typically doesn't see <br>> high revs.? ? If I stick with header, the choice seems to be <br>> Pacesetter or one of the SS ones from England.? ?Head shaved to give <br>> about 9.3 compression.? ?Early TR6 PI type camshaft.? ?Crane ignition, <br>> SU carbs. KN filters<br>><br>> The general tone of on-line comments on monza exhausts for TR6 isn't <br>> enthusiastic.<br>><br>> I was advised that getting a pre-built exhaust may be way to go for <br>> TR6 as needed bends are trickier for a local exhaust shop.<br>><br>> cheers & thanks,? ?Bruce Simms<br><br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://autox.team.net/pipermail/6pack/attachments/20171213/57981dd2/attachment-0001.html><br><br>------------------------------<br><br>Message: 3<br>Date: Wed, 13 Dec 2017 10:39:30 -0600<br>From: Irv Korey <emanteno@comcast.net><br>To: Yahoo <brucesimms2003@yahoo.ca><br>Cc: 6 Pack <6pack@autox.team.net><br>Subject: Re: [6pack] exhausting question<br>Message-ID:<br> <CAFWFMyi6qUYGAtjRv5SDsiQfj+K=Zhr7pyPR_10XxSSjpOaGjw@mail.gmail.com><br>Content-Type: text/plain; charset="utf-8"<br><br>On Wed, Dec 13, 2017 at 10:04 AM, Yahoo via 6pack <6pack@autox.team.net><br>wrote:<br><br>> After 20 years, I need to replace the custom exhaust and the header that<br>> came on my 73 in 1997. Looking at Ansa, but wanted to get folk's<br>> opinions and recommendations. On the header, I'm wondering if I should<br>> simply go back to an exhaust manifold that's correct for my year, I hear<br>> that the later exhaust manifold actually flows okay. This is strictly<br>> a street car that typically doesn't see high revs. If I stick with<br>> header, the choice seems to be Pacesetter or one of the SS ones from<br>> England. Head shaved to give about 9.3 compression. Early TR6 PI type<br>> camshaft. Crane ignition, SU carbs. KN filters<br>><br>> The general tone of on-line comments on monza exhausts for TR6 isn't<br>> enthusiastic.<br>><br>> I was advised that getting a pre-built exhaust may be way to go for TR6 as<br>> needed bends are trickier for a local exhaust shop.<br>><br>> cheers & thanks, Bruce Simms<br>><br><br>I have a custom SS exhaust on my TR6. The tricky part is having the right<br>equipment to properly bend the stainless tubing. Most muffler/exhaust shops<br>don't have it, and they ruin the tubing when they try to bend it. Mine was<br>made with pre-bent curves that were then welded up after very careful<br>measuring (not by me).<br><br>I have 2 friends with the Rimmer big bore SS exhaust. It is a complete<br>system, including the header. There are 2 versions, 1 that terminates in 1<br>big pipe, one that has doubles. They both sound great, fit great, and look<br>great. If I ever replace mine, that's what I will get. NFI<br><br>I have also heard great things about Bell exhausts, no first hand<br>experience however.<br><br>Irv Korey<br>74 TR6 CF22767U<br>Highland Park, IL<br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://autox.team.net/pipermail/6pack/attachments/20171213/bdac3764/attachment-0001.html><br><br>------------------------------<br><br>Message: 4<br>Date: Wed, 13 Dec 2017 16:21:18 +0000 (UTC)<br>From: Jim Jones <jimjcmo@yahoo.com><br>To: 6pack@autox.team.net, Yahoo <brucesimms2003@yahoo.ca><br>Subject: Re: [6pack] exhausting question<br>Message-ID: <2026815706.3833619.1513182078778@mail.yahoo.com><br>Content-Type: text/plain; charset="utf-8"<br><br>My '72 had an English stainless steel 2 1/4 single pipe exhaust system that was recommended for fast street applications. It had a very nice sound. But the tail pipe has a quirkly look about it. It was up turned at about a 30 degree angle to avoid scraping and the tip had a 90 degree cut. Some do not care for the look and others complained that it invited rain to accumulate in the pipe. My fix was to put an old Falstaff can over it when it was not being driven.<br>If I were to do it over again I would still use that system. Very well made.<br>Jim Jones<br>Jefferson City, MO 65109 <br><br> On Wednesday, December 13, 2017, 10:12:35 AM CST, Yahoo via 6pack <6pack@autox.team.net> wrote: <br> <br> After 20 years, I need to replace the custom exhaust and the header that came on my 73 in 1997.? ?Looking at Ansa,? but wanted to get folk's opinions and recommendations.? ? On the header, I'm wondering if I should simply go back to an exhaust manifold that's correct for my year,? ?I hear that the later exhaust manifold actually flows okay.? ? ? This is strictly a street car that typically doesn't see high revs.? ? If I stick with header, the choice seems to be Pacesetter or one of the SS ones from England.? ?Head shaved to give about 9.3 compression.? ?Early TR6 PI type camshaft.? ?Crane ignition, SU carbs. KN filters<br>The general tone of on-line comments on monza exhausts for TR6 isn't enthusiastic.<br>I was advised that getting a pre-built exhaust may be way to go for TR6 as needed bends are trickier for a local exhaust shop.<br>cheers & thanks,? ?Bruce Simms_______________________________________________<br>Support Team.Net http://www.team.net/donate.html<br>Suggested annual donation? $12.96<br>Archive: http://www.team.net/archive<br>Forums: http://www.team.net/forums<br><br>6pack@autox.team.net<br>http://autox.team.net/mailman/listinfo/6pack<br><br>Unsubscribe/Manage: http://autox.team.net/mailman/options/6pack/jimjcmo@yahoo.com<br><br> <br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://autox.team.net/pipermail/6pack/attachments/20171213/c5333a2d/attachment-0001.html><br><br>------------------------------<br><br>Subject: Digest Footer<br><br>_______________________________________________<br>6pack mailing list<br>6pack@autox.team.net<br>http://autox.team.net/mailman/listinfo/6pack<br><br><br>------------------------------<br><br>End of 6pack Digest, Vol 38, Issue 1<br>************************************<br></div></div></body></html>