John Morrison Posted December 9, 2021 Report Share Posted December 9, 2021 Hi all, A question, are the TR4 and TR4A Frames so different as to be impossible to interchange? John Quote Link to post Share on other sites
tr graham Posted December 9, 2021 Report Share Posted December 9, 2021 John it can be done but there is a lot of work and you will need a custom made hood graham Quote Link to post Share on other sites
Quicksilver Posted December 9, 2021 Report Share Posted December 9, 2021 (edited) John. change 4 to 4a or 4a to 4? the rear deck /forward section is different, see body panels section in the parts catalogue from moss and rimmers. the TR4A hoodframe is to wide for the TR4 rear deck/forward section...i think... Marcel Edited December 9, 2021 by Quicksilver Quote Link to post Share on other sites
John Morrison Posted December 9, 2021 Author Report Share Posted December 9, 2021 would be 4A to 4 Marcel. I think this would be the hardest as I knew the 4A side pieces are 'Wasted' as opposed to the 4 being straight, I try and track down good used. John. Quote Link to post Share on other sites
Malbaby Posted December 9, 2021 Report Share Posted December 9, 2021 (edited) Following the comments. Edited December 9, 2021 by Malbaby Quote Link to post Share on other sites
Jase Posted December 9, 2021 Report Share Posted December 9, 2021 TR5 and 6 fit a 4A Quote Link to post Share on other sites
Lo100469 Posted December 10, 2021 Report Share Posted December 10, 2021 i think the big difference is between 4 and 4a, 4a 5 and 6 are similar. As you take out the frame on a 4 and not on the other, everything is different, mounting points, front and back sections and hood. Quote Link to post Share on other sites
John Morrison Posted December 10, 2021 Author Report Share Posted December 10, 2021 Thanks Guys, can anyone tell me are the 4a, 5 and 6, frames and hoods all the same? John. Quote Link to post Share on other sites
badhuis Posted December 10, 2021 Report Share Posted December 10, 2021 I have successfully put in a TR4a frame and hood on my TR4 as that was the part I hated most on the car. It came to the point that I hesitated in taking the car out when the weather forecast predicted rain because I hated setting up the top. Now, I do not care what the weather forecast is because it is easy to put up or down the top. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted December 10, 2021 Report Share Posted December 10, 2021 4 unique frame and fabric. Fabric attaches to screen by lipping under the front protruding top capping of the screen frame. Same method as used on 4A/5/250 soft Surrey top fabric 4A. Unique frame with fixed header rail and fabric with its own attachment to the top of screen using overcentre latches. 250/5. Same frame as 6. Has fixed header rail design like 4A. Fabric differs in the fact it does not fave a zip out rear window interchangeable with 6 as an assembly. Same screen attachment method as 6 uses turning levers that fit in key holes in screen to surface. Has top of door glass cantrail seal. And Velcro attachment to hood fabric 6 same frame as 5/250 Has fixed header rail design like 4A. Fabric has zip out rear window interchangeable with 5/250 as an assembly. Same screen attachment as 5/250. Same screen attachment method as 5/250 uses turning levers that fit in key holes in screen to surface. Has top of door glass cantrail seal. And Velcro attachment to hood fabric 250 and US 6 had reflective stripes sewn to the fabric This does not affect the interchangeability of the fabrics onto 5/6. The original fabric types/colour for 4-6 I believe to be ‘Everflex’ black or white. The Later cars in 6 range had a diamond print on the lower surface denoting fireproof FMVS. Quote Link to post Share on other sites
stuart Posted December 10, 2021 Report Share Posted December 10, 2021 55 minutes ago, BlueTR3A-5EKT said: 4 unique frame and fabric. Fabric attaches to screen by lipping under the front protruding top capping of the screen frame. Same method as used on 4A/5/250 soft Surrey top fabric 4A. Unique frame with fixed header rail and fabric with its own attachment to the top of screen using overcentre latches. 250/5. Same frame as 6. Has fixed header rail design like 4A. Fabric differs in the fact it does not fave a zip out rear window interchangeable with 6 as an assembly. Same screen attachment method as 6 uses turning levers that fit in key holes in screen to surface. Has top of door glass cantrail seal. And Velcro attachment to hood fabric 6 same frame as 5/250 Has fixed header rail design like 4A. Fabric has zip out rear window interchangeable with 5/250 as an assembly. Same screen attachment as 5/250. Same screen attachment method as 5/250 uses turning levers that fit in key holes in screen to surface. Has top of door glass cantrail seal. And Velcro attachment to hood fabric 250 and US 6 had reflective stripes sewn to the fabric This does not affect the interchangeability of the fabrics onto 5/6. The original fabric types/colour for 4-6 I believe to be ‘Everflex’ black or white. The Later cars in 6 range had a diamond print on the lower surface denoting fireproof FMVS. Thats a definitive description there Pete. As stated above if you want to go to a more modern hood on a TR4 you cant unless the forward deck extensions have been replaced with the later "Waisted" ones, in all likelyhood most have been replaced by now and as the original panels have been unavailable for at least 30 years then the later ones will have been fitted. Simplest conversion is to use a 4a hood and frame as its pretty much a direct fit. FWIW I do have a spare hood and frame though obviously distance maybe a bit of an obstacle unless you fancy a holiday in Cornwall. Stuart. Quote Link to post Share on other sites
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