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Freelander diff or duff
bitsilly - 16/3/09 at 05:33 PM

Is there any truth in that Westfield are advising avoiding the Freelander diff (for hayabusas?) because they aren't up to the job?

Does anyone know what the lightweight alternatives are? Do quaife offer an alternative for eg?
Ta!

omega0684 - 16/3/09 at 06:11 PM

its all about the cosworth LSD baby!

britishtrident - 16/3/09 at 07:31 PM

I am pretty sure it might be to do with supplies of the Freelander 1 diff --- i am prety sure the Freelander 2 dosen't use the same diff as the Freeander 1

[Edited on 16/3/09 by britishtrident]

jacko - 16/3/09 at 07:57 PM

I was told the mk 2 diffs have bigger /stronger bearings then the mk1

JoelP - 16/3/09 at 08:29 PM

i was under the impression that the mounts for F1 and F2 diffs are the same.

:{THC}:YosamiteSam - 17/3/09 at 02:47 AM

the diff in my busa is the disco one - westfield uses quaife internals - been fine so far - i have seen the casing snap on one a few years back but only because of a bolt that fell out..

bitsilly - 17/3/09 at 09:22 AM

Cheers gents!
I know sod all about Cosworth diffs! Are they worth holding out for?
If it freelander then aim for Freelander 2.
Didn't now disco was an option.

Either way, the internals will be Quaife and I think I should be able to specify the mounts as the chassis isn't built yet, so can anyone suggest a strong but LIGHT casing which could work? I would prefer to pay a little more or search longer for a lightweight one.
Thanks again.
Ed

adamhay - 19/3/09 at 08:51 AM

bitsilly: You worked out what chassis you are getting yet? I
f not, do that before you get a diff. 2wd Cosworth diffs are 7.5" and will not fit a Caterham for example . . . well, not easily. Plus you'll be farting about with new driveshafts and stuff.
Also, IIRC, the 7.5" Cosworth diff is 3.64:1 which is not suitable for a Busa track car if you want the light 13" wheels/tyres. The Cossie LSD unit will need adjustment to be suitable for a light car as well.
For a Busa with 13" wheels, the common diff is the 3.14:1 7" Sierra diff (from Mk1 diesels and 4 speed Mk1 V6).
People have used the 2.9:1 BMW diff in Caterhams in the past (something I want to do) so this might be an option. You'll need to find a suitable LSD of course and have drive shafts made up.

Paul TigerB6 - 19/3/09 at 09:33 AM

quote:
Originally posted by jacko
I was told the mk 2 diffs have bigger /stronger bearings then the mk1


As above, stronger bearings fitted in the same casing - certainly the same mounting points anyway. The Quaife unit will only fit the unit fitted with the later bigger journal bearings.

linky dinky

[Edited on 19/3/09 by Paul TigerB6]

bitsilly - 20/3/09 at 08:06 AM

Thanks gents,
the chassis will be Raw Striker, and it looks like Westfield sell the complete modded Freelander unit with Quaife internals. At least that is what Raw said would be a good bet.