VIXEN REAR DIFF

[Buster44]

My vixen S2 has just passed its MOT but I have been advised that the 'clonk' from the rear when pulling away is play in the diff.

Is the diff Triumph GT6 or Spitfire? Would this be a good time to uprate it? Where should I look for one?

Basically what are my options?

[Satsuma]

Hi as far as i know the spit and gt6 have the same diff. which is a 3.63 ratio. you will get one off the chelf from canley classics. or i'm sure any triumph specialist. spits bits, rimmer bros, totally triumph. etc.

[Buster44]

Thanks.

Any idea of price?

Upgrade available?

[heightswitch]

Buster44 said:

Thanks.

Any idea of price?

Upgrade available?

You could try Jigsaw racing who can supply a quaife LSD for the casing, you will also need to check the main pinion shaft for wear though. Pretty sure they will also quote for a full exchange LSD.
They also do a nice alloy rear case for the diff.
N.

just checked their site.

Fully re-con std diff £235
Quaife LSD £660
Fully built Quaife LSD Diff £1300

N

Edited by heightswitch on Saturday 31st May 22:12

[daza]

Although I havent fitted my diff yet,,, I had it rebuilt by quaife (ATB Diff)

I thought I paid £700,, I may be wrong it was a while ago.

One suggestion,, if your having one rebuilt,,,, ask whoever is doing it to drill and tapp the flat part of the bottom of the diff casing.

This will allow you to totally drain the diff in-situ.

Just an idea.

Darre

Edited by daza on Sunday 1st June 10:19

[Buster44]

Thanks very much for the suggestions - very useful

[Buster44]

How difficult a job is changing the rear diff on a Vixen?

Reasonably competent with the spanners, but this is one job I haven't attempted.

[ATE399J]

Does the car have a removable hatch cut into the luggage area behind the seats - above the diff? How do you feel about taking the rear screen out? From memory my diff (a salisbury in the Tuscan) will only come out through the top of the chassis if you see what I mean, don't know if the smaller triumph one will come out sideways or downwards but there are plenty here who will know.....

P.S. Rear diff?...... is it 4 wheel drive!!

Edited by ATE399J on Tuesday 3rd June 15:08

[TVR_owner]

ATE399J said:

Does the car have a removable hatch cut into the luggage area behind the seats - above the diff? How do you feel about taking the rear screen out? From memory my diff (a salisbury in the Tuscan) will only come out through the top of the chassis if you see what I mean, don't know if the smaller triumph one will come out sideways or downwards but there are plenty here who will know.....

P.S. Rear diff?...... is it 4 wheel drive!!

Edited by ATE399J on Tuesday 3rd June 15:08

Vixen diff will come out from below.

[timelord]

Always thoughy the diff was a 3.89 out of a mk2 overdrive Vitesse, which is the same as a mk4 1500 overdrive Spitfire. Canley Classics is the place to go for recons, Spitfire specialists, they alsodo an ally casing if you dont blink to hard at the price. Geoff

[Seabass]

I'm with timelord, I thought the diff was 3.89 - I've sourced a 3.63 from a spitfire as a replacement to help with cruising.

There were several ratios available 3.89, 3.63 and I think a 3.27?? Some are said to be 'stronger' than others. You can get a pretty complete picture from a google search of Triumph Diffs.

JC

Edited by Seabass on Tuesday 3rd June 20:34

[Buster44]

ATE399J said:

P.S. Rear diff?...... is it 4 wheel drive!!

Yep, prototype that never made full production.

[daza]

If you want to up the diff that much...

Why not fit a Cossie unit?

You'll be pissing into the wind after 200bhp


Darren

[Fiscracer]

Suggest you call Bill at Hardy Engineering in Leatherhead. Their main business is diffs and gearboxes for classic cars. Sensible prices and very helpful.