4:1 diff or b7 rs4

grizz · 4:1 diff or b7 rs4

Will a b7 centre diff fit a b5 rs4 gear box ?

Or does anyone know how to mod the standard unit

mikey-s

I've been looking into this recently, but have been unable to find a thorough guide on how to mod a B5 diff. I understand it's just a case of swapping out some washers (easy enough), but they have to be a particular diameter and thickness, the specs of which I cannot find.

grizz

MarkB

Does this help? http://diffmod.plainbored.com/

MarkB

Some more info http://www.audizine.com/forum/sho...asher-mod-for-20-80-TBR?styleid=8

jimbo

these are for o1a boxes not o1e . shame id be in for a gb

MarkB

http://audisrs.com/sutra232388.php#232388

grizz

Good find , any idea of the spec of the washers ?

Ghost

I'm sure this was all on Audiworld yonks ago, or at least the old site.

Matt_D

I have also been tempted to do this I even bought a spare centre diff for this

it's simply a case of swapping the teflon coated washers with a suitable hardness non coated washer

What concerns me is that the rear inside wheel when cornering will spin up much more, needs a rear LSD to make the most of it IMHO

davs4

How about this...........

http://www.stasisengineering.com/products/differential-systems