Vitesse 6 gearbox upgrade

[Gadgetman]

I'm looking to upgrade my Vitesse 6 "HB" gearbox, I'm thinking about fitting a 2ltr "HC" box.

Any issues with doing this? are the output flanges the same size?

My HB box wines and with no 1st synchro it can be challenging at times!

Ta

 

[Pete Lewis]

Its straight swap did this on my Vit6

 

also consider fitting a 2ltr diaphragm clutch , which is much better than the old spring pressure plate

You need a 2ltr front nose cover and withdrawl bearing carrier.

 

the bolt holes are the same but you need to drill a new dowel location,

 

to centre the cover , this is not a best way but it worked

fit a pipe oliveonnthe bolts and nip the cover up

this may not be critcally centralised but it does equal out the bolt hole clearance

 

You can drill the flywheel with a battery drill and tap in a new dowel

not a purist method but needs must and it worked fine

 

would pay you to source an overdrive box, we changed the diff for a 3.89 and whilst the engine was

Mildly rorty it pulled like the clappers with that set up

 

just some thoughts

 

pete

[Gadgetman]

Thanks Pete, So an HC box with OD + 3.89 diff. I will keep a look out   

Guess I will need a shorter prop shaft + switch stalk and od gear box mount. Could be a winter project to go with the spare engine re-build.....

 

​There was a guy making good tunnel covers with access panels to check / top up the level. anyone got his details as I've lost them!

[Pete Lewis]

Dont know who that was, I just cut a b ig hole and ovsred it with a mud flap rubber

 

Mine was on strombergs and had a 631 exhaust with some quiet tweeking and she gave most a good run for the money

 

Dont over gear her , having crash on first was more emegency low than every day 1st, having 4 synchro

made amazing difference and better ratio spread

 

You need the inhibitor switch cam and brackets the od chassis mount plate and metalastic mount, speedo angle drive,

pete

Canley used to list a parts listing and a kit ,

[68vitesse]

An early Dolomite 1850 box is 3 rail and will fit a 2L Vitesse and has the J type overdrive. The bell housing is different.

 

Regards

 

Paul

[Guest]

Hello Gadgetman.

 

I have a couple of spare bell housings laying about in the garage.

 

One is from a Vitesse, the other from another Triumph either another Vitesse or Spitfire / Herald. Will post a couple a photos and hopefully a bell housing expert on the Forum (!!) will be able to correctly ID which is for which.

 

if you are local to East Sussex it may be of interest for you.

 

Perhaps you already have a suitable unit ??

 

Regards.

 

Richard.

[Pete Lewis]

One advantagge of going dolly route you can get the box with the 18mm mainshaft spigot

 

Must be 1850 or wont have the input shaft for a 6 cyl .....the alloy clutch hsg is much deeper on a 6 than a 4cly. like twice the depth,

You would still need to modify up to a 2ltr /1850 diaphragm clutch

6pot has cut 10 splines the 1850 is I think rolled splines

most 4 cyl are a cast hsg, all 6 are alloy

 

well something like that

pete

 

pete

[68vitesse]

Dolomite 1850Three rail clutch is the same as the Vitesse 2L, the single rail just used a different friction disc.

From memory.

 

Regards

 

Paul

[daverclasper]

Hi

 

I have overdrive bitza fitted to Vitesse mk1 2Litre, that has the bigger engined Dolly shafts to accommodate J type OD.

 

I think I have more details if you need them, eg same clutch as 2 litre Vitesse, apart from friction plate to fit the different Doly splines (TR7/bigger engined Dolly). Was rebuilt by Mike Papworth recently. He knows triumph gear boxes inside out.

 

Dave