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Alternative diff choices?
nick205 - 19/2/09 at 10:37 PM

I've been pondering that perenial question of alternative diff choices.

Audi have made quattro 4wd cars for many years - would the rear diffs be useable?

I'm guessing the ratios may not be right, but they should be OK power/torque wise.


liam.mccaffrey - 19/2/09 at 10:38 PM

im sure lsdweb is using a subaru diff

I have used a mx5 diff

[Edited on 19/2/09 by liam.mccaffrey]


nick205 - 19/2/09 at 10:48 PM

Reading a bit on VAG 4wd systems it appears cars with transverse engined 4wd systems have a non permanent "Haldex" drive system which uses a clutch to engage RWD only when the FWD starts to slip/slide.

Maybe that rules out theses diffs?

What about the larger/longitudinal engined 4wd VAG cars?


greggors84 - 19/2/09 at 11:35 PM

Freelander diffs are becoming common in newer kits as the sierra ones become older.

I cant see the sierra ones becoming scarce anytime soon but eventually people will need to look else where.

BMW 3 series?
MX5?

[Edited on 19/2/2009 by greggors84]


Simon - 20/2/09 at 12:27 AM

I have a 2.28:1 BMW diff (from 330D) that may eventually find its way into my car. It's heavier than the Sierra unit, but lighter than the Jag IRS I was going to use.

There are dozens of ratios available.

ATB

Simon


matt_claydon - 20/2/09 at 08:23 AM

I would have thought BMW would be the easiest option in terms of choice and availability in scrappies / on eBay.

Whatever you use there will be issues making driveshafts to fit if you stick with Sierra rear uprights though.


fazerruss - 20/2/09 at 11:54 AM

quote:
Originally posted by nick205
Reading a bit on VAG 4wd systems it appears cars with transverse engined 4wd systems have a non permanent "Haldex" drive system which uses a clutch to engage RWD only when the FWD starts to slip/slide.

Maybe that rules out theses diffs?

What about the larger/longitudinal engined 4wd VAG cars?


I always wondered why the front wheels seem to slip when i dump the clutch on my octavia 4x4.