Rangi246 Posted June 25, 2013 Share Posted June 25, 2013 Hi everyone, am new here so please bear with me.I have a 65 Vitesse 6 that has been running a non OD Dolomite 1850 3 rail gearbox. Its been in the car ever since I bought it and apart from a slightly worn synchro on second, its been pretty good. Recently though i've found the non OD not so good for the open road so have decided upgrade to an overdrive unit. Luckily I have managed to source a fully recond Dolomite 1850 3 Rail J type overdrive box and Dolomite clutch unit (all bits including the new clutch are NOS parts). Finding this gearbox was a mission in itself, they're not exactly thick on the ground here in NZ.At the moment the car is running the 1600 spring based clutch and the new clutch is a Borg and Beck type. I'm not too sure what setup has been used on the car as I thought the Dolomite gearbox needed the Borg and beck type clutch due to the different input spline? Basically i'm confused. Can I use the new clutch kit? Is it possible to remove Spring clutch and fit the B&B one without too many problems? I'm due to remove the gearbox in the next month or so and would appreciate any tips about what to look for.Cheers Quote Link to comment Share on other sites More sharing options...
Mark Hammond Posted June 25, 2013 Share Posted June 25, 2013 3 rail Dolly 'box has the same input shaft size as a 1600 Vitesse AFAIK. I think you will need a Vitesse 2 litre flywheel to utilise the later diaphragm spring clutch. Single rail Dolly 'box has more splines on the input shaft, fine splines unlike 3 rail which are coarser splines. You will probably need the later type of release bearing carrier too.Hope this helps.Mark Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted June 25, 2013 Share Posted June 25, 2013 If both boxes are the coarse splined 3 rail type then you can stick with the original 1600 clutch as the 1600/2L/1850 3 rail gearboxes all have the same spline.If you want to use the 2L/1850 clutch then the Vitesse 2L flywheel will be the easiest way as Mark says, though it way be possible to redrill your 1600 one to suit.Nick Quote Link to comment Share on other sites More sharing options...
Rangi246 Posted June 26, 2013 Author Share Posted June 26, 2013 Thanks for your help. In your opinion, which clutch is the better one to have - the original Spring Clutch or the B&B type? Quote Link to comment Share on other sites More sharing options...
Mark Hammond Posted June 26, 2013 Share Posted June 26, 2013 There'll not be much in it. The coil spring type can be prone to slipping under hard driving, but then so can't they all? I'd stick with the coil type because it's easiest.M. Quote Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 30, 2013 Share Posted June 30, 2013 I converted our sprung clutched 1600 to a 2 ltr diaphragm unityou need to drill a new dowel hole as the two designs have different dowel locationsyou need a later the later 2ltr throwout carrier whis is longer to suit a much thinner clutch assy.what I did to redrill the dowel was ( not the best) but put a pipe olive on the cover bolts and lightly nip the cover onto the flywheel( less the disc) these olives centralise the clearance of the 6 fixing holes and give some degree of concentricity.drill the new dowel hole using the cover as a guide.. remove the bolts and olive and its done.its been fine and much more driveable , lighter to the foot. never mix diaphragm and spring cover discs as both are different thickness, the coil clutch has the thicker lining, fit a thick into a diaphragm and you loose clamp load and very light pedal, put a thin disc in a coil and you get low clamp load and a heavy pedal.. and the initial finger/pad position for the throwout will be to far out or to far in.TSSC shop are doing a special deal with Borg and beck new Units at really good prices Pete Quote Link to comment Share on other sites More sharing options...
Rangi246 Posted July 11, 2013 Author Share Posted July 11, 2013 I assume by the throwout carrier you mean the carrier for the release bearing? I think i'll re-drill the original flywheel like you say. I priced a 2 ltr one up from the UK and the freight cost is more than the flywheel itself!!! The joys of sourcing parts from the UK.....Took the car out last weekend after replacing the clutch master and slave cylinders and noticed its developed a quite bad vibration coming up through the gearbox whenever the engine is revved above 4000rpm. Its also fairly constant at about 50mph. Any ideas? There are no noises from the UJ's and the clutch operation is better than its ever been.Mark Quote Link to comment Share on other sites More sharing options...
junkuser Posted July 11, 2013 Share Posted July 11, 2013 Sounds like universal joints on propeller shaft may require attention. Quote Link to comment Share on other sites More sharing options...
Rangi246 Posted July 15, 2013 Author Share Posted July 15, 2013 I've just been offerred a fly wheel from a Mk2 2ltr saloon engine. Is there any diffreence between these and the ones in the Vitesse 2ltr? Quote Link to comment Share on other sites More sharing options...
Richard B Posted July 16, 2013 Share Posted July 16, 2013 Yes, Saloon one is much heavier.(and I suspect thicker). Quote Link to comment Share on other sites More sharing options...
Paudman Posted July 16, 2013 Share Posted July 16, 2013 Pics of thick saloon and thin Vitesse / Gt6 version below. The thick one is a lot smoother while running but much much heavier. Quote Link to comment Share on other sites More sharing options...
Rangi246 Posted July 17, 2013 Author Share Posted July 17, 2013 Thanks for your help everyone. Will stick to re-drilling my current one - last thing I want is to turn the engine into a complete slogger....Mark Quote Link to comment Share on other sites More sharing options...
.thumb.jpeg.b15b81ef10abeea1c3039ae03c4a9f3a.jpeg)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.