Diff Ratio ?

[D14 AYS]

Morning all,can the diff ratio be changed on the early tuscans ? or are the diffs a differant type on Sags,T350's and the like ? Been reading about the 3.73 diff and this sounds like a good mod.

If it is possible how much and were ?

Cheers Dean

[T450t]

D14 AYS said:

Morning all,can the diff ratio be changed on the early tuscans ? or are the diffs a differant type on Sags,T350's and the like ? Been reading about the 3.73 diff and this sounds like a good mod.

If it is possible how much and were ?

Cheers Dean

If you haven't already I would make your first mod the dampers and geometry as the stock mk1 Tuscan is a tank slapper, putting a lower BTF diff on it without changing the dampers and geometry first will make it a suicidal tank slapper.

But having said that the answers to your questions are in order of asking is

Yes
No

If you do go down the route of a diff ratio change consider the Quaife ATB LSD while your at it. If you live in the south east I can put you in touch with the main importers of BTF who also are the cog men for the Aero 8 Brit car team and are very acquainted with Quaife.

Edited by T450t on Monday 26th May 12:39

Edited by T450t on Monday 26th May 12:44

[D14 AYS]

If you haven't already I would make your first mod the dampers and geometry as the stock mk1 Tuscan is a tank slapper, putting a lower BTF diff on it without changing the dampers and geometry first will make it a suicidal tank slapper.

But having said that the answers to your questions are in order of asking is

Yes
No

If you do go down the route of a diff ratio change consider the Quaife ATB LSD while your at it. If you live in the south east I can put you in touch with the main importers of BTF who also are the cog men for the Aero 8 Brit car team and are very acquainted with Quaife.

[/quote]


Hi there,

I have already had Dampers(Racing Red) with full geo inc corner weighting etc,now handles like a dream,with the sort of driving i do top end speeds are not what i require.
Please could you let me have details that you have mentioned.

Thanks Dean

[supercopa]

it seems that 3,73 diff is standard on every TVR since the Tuscan (Tuscan Mk1 & 2, Tamora, T350, Sagaris).

so what is exactly the "diff mod" or "racing diff" people are talking about?

[glow worm]

supercopa said:

it seems that 3,73 diff is standard on every TVR since the Tuscan (Tuscan Mk1 & 2, Tamora, T350, Sagaris).

so what is exactly the "diff mod" or "racing diff" people are talking about?

Where did you get that from??? Read the thread on T350/Sag page http://www.pistonheads.co.uk/gassing/topic.asp?h=0...

mine was 3:46 std on Mk2s... although it has been said the close ratio box on an 'S' was designed with a 3:73....Get your car up on a ramp an look at the printed label on your diff....Or do the speed comparisons....
Two weeks ago I had mine changed to a M76 3:73 from the BTR M80 3:46

Diff prefered by track people is a 3:91 (the so called racing diff)

Edited by glow worm on Saturday 14th June 22:38

[supercopa]

I've seen this on the book "TVR Performance Portfolio" from Brookland Books.

I'll check on my car on the sticker as you told me.

[glow worm]

I think TVR fitted what was available... that's why some people haven't got CR boxes when they thought they had...same goes for diffs.