LocostUSA.com

I've got a Ford Sierra 4x4 rear differential that i'm planning to use in my BEC.
But its a heavy unit.

I was thinking about milling of some weight of the crownwheel, and some of the LSD.
But is it worth it?

Has anyone here done it before?

I see the benefit but it is very hard material. Consider the curb weight and traction limitations when selecting a diff size. Most go for excess capacity/weight/parasitic loss. Numerically higher ratios are weaker for a given diff size (thinner teeth) so that is another consideration.

There are surface compression processes (similar to shot peening) that reduce the friction but pricey for a few hp.

_________________
Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS viewtopic.php?f=5&t=13225&p=134742
Simple Spring select viewtopic.php?f=5&t=11815
LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12