A little known fact is that from the first Mk1 Frame through the last 1500 and even including all of the GT6 frames they were all serial numbered consecutively with the FC prefix.
That in itself tells you a lot about the interchangeability. But it does not tell the whole story. The later frames have rear extensions that were added to comply with safety requirements. In addition some other slight differences (like cutouts in the right frame rail in the engine compartment for exhaust clearance and several modifications to accommodate engine and radiator mounts as well as rotoflex accommodations) were made throughout the years. But in general the frames should be interchangeable, especially from one Spitfire to another. The one you are using is probably from an early (Mk1 through Mk3) Spit based on your description of the rear spring. If it were me, I'd use the 6 leaf fixed spring because I so vehemently hate that swing-spring KLUGE that Triumph used in the square tail models. But that's just me. Cheers, Joe -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Rutherford Sent: Monday, May 12, 2008 2:17 PM To: Digest Spitfire; Digest Triumphs Subject: [Spits] Frame swap on Spitfire Hi all, I have perforation rust in the rear frame rails of my 78 Spitfire. Am stripping an older frame (unknown year but has 6 leaf rear spring) for bead blasting and POR-15 painting. Can anyone confirm my belief that all Spitfire frames are interchangeable? I understand that the 12 coil front spring from this frame might be advisable for lowering the front end and improving handling as opposed to the 11 coil used on the 1500. I will of course use the swing spring from my 78 along with a Monroe air lift shock kit at the rear. Any insight into what might be wrong with this plan is welcome. TIA, Robert Rutherford in Vernon, BC White 78 Spitfire with rusty frame. Red 76 Spitfire waiting in the wings (or is that waiting in the fenders?) [email protected] http://autox.team.net/mailman/listinfo/spitfires http://www.team.net/archive _______________________________________________ Support Team.Net http://www.team.net/donate.html [email protected] http://autox.team.net/mailman/listinfo/spitfires http://www.team.net/archive
