Freelander rear differential

[Harry_Tuttle]

Hi everyone,

Does anyone have or know where I migh be able to get hold of a rear differential from a TD4 Freelander ?

I am after the 3.2:1 rear diff (& driveshafts/prop) for a bike engined car project.

Any hlp would be gratefully received !

Thanks a lot !!

Harry

[BigJon]

Triumph Rover Spares in Adelaide. They would have heaps of second hand ones.

[mjm295]

Sounds like an interesting project, what you building?

Clubbie?

[Harry_Tuttle]

Thanks for the quick reply.....

I will try and find them on the web.

I already own a sort of clubman, a Fisher Fury so wanted to build some else completely whacky so wanted a mid engined bike powered car.

I have a fuel injected R1 1000cc engine and just got a cheap Fiat 126/Niki. Drum brakes all round, R1 engine 150+ hp, could be interesting.....

If anyone happens to have or know of a TD4 diff anywhere, please drop me an email.

Thanks.

[SuperMono]

I guess this will be an 'off road' vehicle?
Might be better looking for something with a LSD.

[beforethevision]

If thats the case, a whole IRS setup from a jap car (S15 etc) can be had off ebay for very cheap or even a xr8/clubsport LSD, freelander diffs tend to be expensive.

[Harry_Tuttle]

Not planning to make an orr-roader...

Planning to use as a track car and to use in sprints/hill-climbs.

The ratio is the crtitcal thing need between 3.2:1 to maybe 3.4:1 maximum..... The R1 engine revs upto 12,000rpm....

All the Mazda IRS diffs tend to be a lot shorter (MX5 around 4.1:1), anyone have any ideas what japanese IRS's may be in may target range ? Anything close would do.

Cheers guys.

[beforethevision]

Not planning to make an orr-roader...

Planning to use as a track car and to use in sprints/hill-climbs.

The ratio is the crtitcal thing need between 3.2:1 to maybe 3.4:1 maximum..... The R1 engine revs upto 12,000rpm....

All the Mazda IRS diffs tend to be a lot shorter (MX5 around 4.1:1), anyone have any ideas what japanese IRS's may be in may target range ? Anything close would do.

Cheers guys.

I dont know the ratios in the gearbox you intend to use, but with all the power up top (read: 8-12k) on a tuned bike engine, would you not want a ratio of 4.1 over 3.2?

Cheers!

[camel_landy]

The Freelander rear diff is starting to become quite popular in the kit car world. (I've had a couple of Westfields in my time... ;) )

Although, plenty go for the Freelander diff, have you thought about putting the Quaife internals in to make it a LSD??? :cool:

M

[camel_landy]

I dont know the ratios in the gearbox you intend to use, but with all the power up top (read: 8-12k) on a tuned bike engine, would you not want a ratio of 4.1 over 3.2?

Cheers!

Not if you're wanting to do sprints/hill climbs. Those events are more about acceleration rather than top end speed.

M

[SuperMono]

An R1 will have a secondary reduction (final drive) ration of about 2.7-2.8:1 as standard and will top out at something a south of 300kph given enough room. Tyre sizes (rolling) on a R1 would be close to a typical 17inch motorsport tyre for a car so in theory your ballpark 3.2:1 diff will get you to 220-250kph or thereabouts.

I think the Aussie Racing cars (with Yamaha XJR motors) run a 3.3:1 diff on shorter tracks and a 2.5:1 at Bathurst.

[Harry_Tuttle]

Yep, gearing is not so straight forward on the R1.

I am basing it on a friends R1 Fisher Fury in the UK which runs a Ford Sierra diff and that is 3.38:1 and tops out in 6th at 12,000rpm at 130 mph....

So anywhere around 3.4:1 will be about right, 4.1:1 just way too short. Still not sure 130 mph in a Fiat 126/500 will be too safe....

Just need to find a sensible jap diff close to this ratio I guess.

[Harry_Tuttle]

Just done some research and SuperMono was pretty much spot on !

The secondary reduction is 2.688:1 on the 2003 R1......