Sam C Posted December 4, 2009 Share Posted December 4, 2009 Hi allI need to replace the rear spring in my MkIII rotoflex GT6.Is it identical with the spring in other cars? for example vitesse, spitfire - and in that case what models?Would this, for example, be the same?:http://cgi.ebay.co.uk/triumph-spitfire-rear-swing-spring_W0QQitemZ370286638614QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item5636cdb616Many thanks all!Sam Link to comment Share on other sites More sharing options...
Piero franchi Posted December 4, 2009 Share Posted December 4, 2009 Hi, no that spring in from a mk4 or 1500 spitfire, or very late GT6, its a swing spring.you need a GT6 spring as it is the weight of the car that matters as well as it being rotoflex Link to comment Share on other sites More sharing options...
Sam C Posted December 4, 2009 Author Share Posted December 4, 2009 thanks matey - much appreciat it! Link to comment Share on other sites More sharing options...
TimW Posted December 4, 2009 Share Posted December 4, 2009 If you can wait a week or too i may have a spare mk3 roto spring you can have. I don't know it's condition yet but can let you know when it arrives Link to comment Share on other sites More sharing options...
Paudman Posted December 5, 2009 Share Posted December 5, 2009 GT6 has six thin leaves, Spit 1500 has five thicker ones. Link to comment Share on other sites More sharing options...
starman Posted December 12, 2009 Share Posted December 12, 2009 There are differences between GT6 and Spit fixed springs, and also among GT6 fixed springs, but the swing spring assemblies are the same for the late GT6s and Spitfires. Better described in a table/listing of part numbers: Spitfire: early (mk1, mk2, mk3) 305894 (fixed spring) late (mkIV, 1500) 159640 (swing spring) GT6: early (mk1) 307324 (fixed spring) rotoflex (mk2 and mk3 thru KF20000) 308499 (fixed spring) late (mk3 after KF20000) 159640 (swing spring) My guess (and it's a guess since I have not made measurements) is that the rates are different among the different fixed springs. However, they are interchangeable as far as fitment goes, so mechanically, you could substitute. HTH--cheers. Link to comment Share on other sites More sharing options...
Slimboyfat Posted December 12, 2009 Share Posted December 12, 2009 1416 wrote:late (mk3 after KF20000) 159640 (swing spring) .Late MKIII (swing spring) is 159654.159640 is short shaft MKIV Spitfire. Link to comment Share on other sites More sharing options...
starman Posted December 13, 2009 Share Posted December 13, 2009 Slimboyfat wrote:Late MKIII (swing spring) is 159654.159640 is short shaft MKIV Spitfire.Oops--your'e right. 159640 is the Spitfire swing spring and 159654 is the late GT6 swing spring. Sorry for the misinformation.BTW, the switch from short to long axles on the mkIV Spits came after FH500000 (Feb'73). All mkIV and 1500 Spitfires had the same swing spring; 159640 is not just for the short axle mkIV but all mkIV and 1500 Spits. Link to comment Share on other sites More sharing options...
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