John Bonnett Posted June 29, 2016 Share Posted June 29, 2016 Is there an easy way to identify a GT6 tower as opposed to a Spitfire one? I know the GT6 towers allow the six to sit lower but I don't have two known ones for comparison.The reason I'm asking is that I have a least two pairs that I would like to sell.Thank you. Quote Link to comment Share on other sites More sharing options...
npanne Posted June 29, 2016 Share Posted June 29, 2016 Not easy if you don't have two to compare.If no-one manages to get you a measurement before this evening, I'll pop into the garage and get some numbers for you. Quote Link to comment Share on other sites More sharing options...
npanne Posted June 29, 2016 Share Posted June 29, 2016 And I seem to recall (not that it's important, but some trivia for you) that it is the Spitfire ones that are different to allow the Spit engine to fit - the GT6 towers are the same as Herald and Vitesse Quote Link to comment Share on other sites More sharing options...
npanne Posted June 29, 2016 Share Posted June 29, 2016 Edit - I don't know what's up with the picture link - maybe the host doesn't want it linked?anyway - here's the page I lifted it from : http://www.teglerizer.com/triumphstuff/spit6project/spit6_framedifferences.htm Quote Link to comment Share on other sites More sharing options...
Alex Posted June 29, 2016 Share Posted June 29, 2016 I thought herald were different to vitesse? Quote Link to comment Share on other sites More sharing options...
npanne Posted June 29, 2016 Share Posted June 29, 2016 Quoted from Alex I thought herald were different to vitesse? Vitesse and late Herald, and all GT6 used the same (part # 305592-305593)Early Herald's used a different part number (303590) - although I'm not sure what the difference wasAll Spits used 305746-305747 with the different engine mounting position Quote Link to comment Share on other sites More sharing options...
Jonny-Jimbo Posted June 29, 2016 Share Posted June 29, 2016 Early Vitesse had extra gusseting as well on the inside of the tower, up to where the three bolts for the damper come through. Quote Link to comment Share on other sites More sharing options...
heraldcoupe Posted June 30, 2016 Share Posted June 30, 2016 Quoted from npanne Early Herald's used a different part number (303590) - although I'm not sure what the difference was The Mk1 Herald parts have no provision for engine mounting, hence they're not handed - very easy to spot these.The Spitfire turrets allow the engine to sit lower, rather than the other way around. All others share the same design, though there are slight detail differences according to year. The difference is obvious with both available to compare, but descriptions can be a bit woolly without a picture. Essentially the opening for the steering column has the engine mount's horizontal brace at the very top in most cases, however this is about 1/2" lower with the Spitfire, with daylight visible above,Cheers,Bill. Quote Link to comment Share on other sites More sharing options...
npanne Posted June 30, 2016 Share Posted June 30, 2016 The gap illustrated above is 95mm on a GT6 turret.Sadly I don't have a Spit tower to measure, but this should give you some idea. Quote Link to comment Share on other sites More sharing options...
Alex Posted June 30, 2016 Share Posted June 30, 2016 Quoted from npanne Vitesse and late Herald, and all GT6 used the same (part # 305592-305593)Early Herald's used a different part number (303590) - although I'm not sure what the difference wasAll Spits used 305746-305747 with the different engine mounting position Oh yes of course it's me being a dope......I have a herald with spitfire turrets but I'm fitting a 6.That's what confused me as I remembered mine were wrong. Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted July 1, 2016 Author Share Posted July 1, 2016 Having found a Spitfire tower and compared it with a GT6 one the easy way to check is the size of the engine mount bolt holes. 1/2 inch clearance for GT6 and 3/8 inch for Spitfire. Quote Link to comment Share on other sites More sharing options...
heraldcoupe Posted July 1, 2016 Share Posted July 1, 2016 Quoted from John Bonnett Having found a Spitfire tower and compared it with a GT6 one the easy way to check is the size of the engine mount bolt holes. 1/2 inch clearance for GT6 and 3/8 inch for Spitfire. I wouldn't rely on that, the relative heights of the mountings are what's really relevant,Cheers,Bill. Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted July 3, 2016 Author Share Posted July 3, 2016 Having stood each tower on my surface table I've measured up to the centre of the top engine mounting hole. The GT6 mount is about 170mm and the Spitfire around 155mm Quote Link to comment Share on other sites More sharing options...
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