<div dir="ltr">Where are the Engine Masters when we need them? Some dyno time would be terrific.<div><br><div>If my memory is working today, Cambridge sold these in two different lengths. I bought</div><div>the long ones. Ken might have sold the shorter ones. It would not be hard to shorten those</div></div><div>and move the collector up. Would make them easier to fit on a TR3A. I still have a set on the</div><div>TR4. The ones you have were on the Warwick GT with 42 DCOE carbs. </div><div><br></div><div>Happy Thanksgiving everyone</div><div>Dean T</div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Nov 28, 2024 at 8:04 AM yellow04 via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:10pt;font-family:Verdana,Geneva,sans-serif">
<p>Thanks Dean, the Cambridge headers are installed on Old Blue!</p>
<p>The Cambridge headers are not the same as Ken Gillanders supplied to so many of us over the years, but I have no doubt the same manufacturer was responsible for making both. The primaries on Ken's header were significantly shorter, the collector was on the straight section of pipe under the starter. I have not had Old Blue on track yet with the Cambridge header, but I made so many other changes this rebuild that I am afraid I will not really be able to say what kind of difference they make.</p>
<p>Gillanders believed headers with the 1 5/8's inch primaries were the way to go, he had all the fast TR3/4 racers in the east running them. The vast majority of TR3/4 headers we see, and as Bob Kramer states, we all have hanging on our walls, have smaller primary tubes, usually 1 1/2 inch. </p>
<div id="m_-5223082970015506810signature"> </div>
<p>It seems every year or so a racer is looking for a header for a TR3/4, and as there doesn't appear to be an obvious supplier, it turns into a scramble.</p>
<p>Do we know if somebody selling TR3/4 headers with the larger primary tubes?</p>
<p>We know a lot of work has been done comparing the length of the primary tubes, but has anyone done any dyno work comparing headers with different primary tube diameters???</p>
<p>Henry Frye<br>2025 Kastner Cup Chair<br><a href="mailto:fot@kastnercup.com" target="_blank">fot@kastnercup.com</a><br><br><br></p>
<p id="m_-5223082970015506810reply-intro">On 2024-11-27 13:23, Dean Tetterton via Fot wrote:<img style="font-size: 10pt;" src="cid:ii_193731ff8b1a619d5b1" alt="DSC_0063.JPG" width="562" height="377"></p>
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<div dir="ltr">
<div>These are the headers I ran on my TR3A, TR4, and Warwick GT.</div>
<div>They came from Cambridge Motor Sports in the UK when they were</div>
<div>in business. I think they were the same as what Ken sold at BFE. </div>
<div> </div>
<div>One of these sets went to Henry Frye. Watch out, they might be</div>
<div>on Ole Blue at the Kcup. </div>
<div> </div>
<div>Dean T.</div>
<div>Need a Set? Buy my TR4, get the header.</div>
<div> </div>
</div>
<br>
<div>
<div dir="ltr">On Wed, Nov 27, 2024 at 12:07 PM Greg Blake via Fot <<a href="mailto:fot@autox.team.net" rel="noreferrer" target="_blank">fot@autox.team.net</a>> wrote:</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">I'm probably bucking the trends here. I run the stainless falcon tri-y. If you believe theory behind header designs, the shorter primaries will favor low to mid range torque over high rpm horsepower. Since I built my race motor around the concept of accentuating torque, I went with these. Been running them since 2010 and they are still in great condition. Do I make the most power, no. Does my car pull out of the corners? Hell yeah.
<div> </div>
<div>One draw back with my engine combo. It drops out of that nice fat torque curve at anything over 6500. I know some other guys that run TR 3/4 motors that will pull another 1000 rpm making power. </div>
<div> </div>
<div>I guess it comes down to the whole package. Match your headers to your engine. </div>
<div><br id="m_-5223082970015506810v1m_-5936227376174864278lineBreakAtBeginningOfSignature">
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr"><br>
<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">On Nov 27, 2024, at 10:32, Joe via Fot <<a href="mailto:fot@autox.team.net" rel="noreferrer" target="_blank">fot@autox.team.net</a>> wrote:<br><br></blockquote>
</div>
<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">
<div dir="ltr">I'm using stainless steel headers that I got from BFE probably 20 or so years ago. They have been great.
<div> </div>
<div>Have an old set of tri-Y headers hanging around that I last used when the 4:1 steel headers that came with my TR3 fell apart and I was waiting for the BFE headers to arrive. </div>
<div>JoeB</div>
<div><br id="m_-5223082970015506810v1m_-5936227376174864278lineBreakAtBeginningOfSignature">
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr"><br>
<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">On Nov 26, 2024, at 9:04 PM, Michael Deweerd via Fot <<a href="mailto:fot@autox.team.net" rel="noreferrer" target="_blank">fot@autox.team.net</a>> wrote:<br><br></blockquote>
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<div dir="ltr">
<div dir="ltr">
<div>Amici</div>
<div>I'm searching for a set of headers for my new TR3 project car I would really like the stahl header but they have retired and ACP doesn't list any triumph headers. </div>
<div>What are my options? What are you guys running ??</div>
<div> </div>
<div> </div>
<span>-- </span><br>
<div dir="ltr">
<div dir="ltr"><em><span style="font-family:"comic sans ms",sans-serif">Mike Deweerd</span></em></div>
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