thescrapman Posted October 29, 2017 Share Posted October 29, 2017 I am trying to identify the source of a 6-cyl head I have.Stamped 519779, is 3 3/8" thick and has 37mm inlet and 32mm exhaust valves.Can't seem to find a cross reference anywhere.Anyone got any ideas??CheersColin Quote Link to comment Share on other sites More sharing options...
Steve AKA vitessesteve Posted October 29, 2017 Share Posted October 29, 2017 My go to check is Chris Witors list: https://www.chriswitor.com/cw_technical/head_applications_chart.pdfHowever your head is not on the list.3 3/8 inch = 3.375 inch Quote Link to comment Share on other sites More sharing options...
Richard B Posted October 29, 2017 Share Posted October 29, 2017 3-3/8" is 3.375 which is the same as a 2.5S carb combustion head (with low compression).Can't see it fitting a 2000 unless with forced induction 😀 Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted October 29, 2017 Share Posted October 29, 2017 The New Zealand Triumph Club reference I usually use has gone missing.........Possibly a US spec one (or other export market). Check the port spacings as some US spec ones have odd inlet port positions.Anything is possible with domed pistons Richard...... 🙂Nick Quote Link to comment Share on other sites More sharing options...
npanne Posted October 30, 2017 Share Posted October 30, 2017 None of the six-cylinder engines that have passed through my hands (only three, but still) have had the “right” head according to the reference lists.At this age I guess it’s possible that they’ve all been swapped or machined in the past - or it’s possible that Triumph were mixing and matching whatever they had lying around in the 60s and 70s. Quote Link to comment Share on other sites More sharing options...
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