Billus99 Posted October 7, 2015 Report Share Posted October 7, 2015 Hi, have just bought a second hand o/d gearbox for my vitesse, and the box is actually a dolomite one with "WE" code, and its got a J Type overdrive. Question is, the input shaft has 10 splines, with about 1 3/4" tip after the splines - is that going to go straight into the vitesse engine / clutch? I haven't yet removed the old gearbox to do a comparison, and was hoping to find out before I start pulling the car to pieces! Any other issues with putting a J type into a Vitesse (old one I assume has D type), regarding mounting, or speedo drive? Link to comment Share on other sites More sharing options...
JohnD Posted October 7, 2015 Report Share Posted October 7, 2015 Billus, The splines are for the clutch driven plate. You should be able to get one for that spline. The shaft in front of the splines, the spigot, is to go in the bronze bush in the centre of the flywheel. You would need to ensure that you have the right diameter bush and that it and the counter bore it sits in is the right depth. Very important as it supports the forward end of the input shaft! You need to ensure that the wiring is compatible with a J-type, and if your Vitesse didn't have one then the special mount plate for the OD. Some ODs didn't need a relay, I seem to remember. The D-type does, but the J-type?? John Link to comment Share on other sites More sharing options...
68vitesse Posted October 8, 2015 Report Share Posted October 8, 2015 The early Triumph Dolomite 1850 gearbox, the three rail one, is essentially the same as the 2L Vitesse but with a different bellhousing. J type overdrive does not need a relay but make shure the wiring only lets it operate on third and fourth. I use a J type with a three rail box in my 68 MK1 2L Vitesse. The early 1850 Dolomite uses the same clutch as the 2L Vitesse and GT6. Regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 8, 2015 Report Share Posted October 8, 2015 while its all out its worth check the thickness of the clutch throwout brg, some are only 15mm it should be 19mm thick this has the effect of reducing the lever position and makes the see saw leverage all a bit late. you can pack the spherical post with a washer underneath to to get the fulcrum higher and re balance the leverage if the carrier has worn where the pins contact the groove remove the anti spin spirol pin drill new hole and it starts wear in the new location around the groove. check the throwout lever fot cracks where the spherical wears if the pins have worn badly i have replaced them with cut down clevis pins rewelded in place. Pete Link to comment Share on other sites More sharing options...
Billus99 Posted October 8, 2015 Author Report Share Posted October 8, 2015 Thanks a lot everyone. I'll be cleaning the new one up no checking it over, in the next week or 2, and hopefully get it in before Xmas! Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 10, 2015 Report Share Posted October 10, 2015 As John says count the splines then get a suitable clutch plate; my own GT6 has the 18/50 box and J-type overdrive and uses the Dolomite clutch plate. It’s all a straightforward fit. Link to comment Share on other sites More sharing options...
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