2500S - TR6 Differential Swap

[Joe Earnest]

One of a Team Torpedo members has a 2500S with a bad diff.  I know the gears from a TR6 can be placed in the saloon casing.  Is it possible to simply install the differential from the TR into the saloon?

[thescrapman]

Joe

yes and no is teh answer.

Not simple, as you have to swap the rear casing, and remove the front flange as the saloon uses the quill shaft extension, but really not dificult either.

TR6 ratios will be either 3.45 or 3.7.

Saloon ratio is usually 3.7 in a 2.5S.

Cheers

Colin

[JimEB]

Didn't all 2.5 engined cars use 3.45?

[Richard B]

Sorry Colin, I'm with Jim, I thought Auto 2000's had 3.7, all 2.5's had 3.45

[Doug Thompson]

All 2.5 triumphs indeed have 3.45 ratio :)

[Joe Earnest]

Thanks guys.  Good news for Mike.

[Encom]

Bit left field but umm Nissan long nose diff? :)

If you can get an early Datsun (R160) one with flanged output shafts your laughing. Use the matching Datsun 180B half shafts and Tri-Dat UJ's to the hubs.

I used the R200 long nose, but the R160 would have been so much easier, and lighter.

Just an idea :)

[Nick Jones]

Dougthompson wrote:

All 2.5 triumphs indeed have 3.45 ratio :)

Saloons yes.  However, at least some US TR6s (and maybe TR250) have 3.7:1

Nick