Best 325i sport lsd

[Danny06]

Looking to replace the lsd in my 89 325i sport, not sure what diff is in the car atm but wondering what would be my best to go for and why!

[AlpineAde]

3.91.

Why? Because I'm pretty sure that is what they came with from the factory.

[B7]

Spot on. Tech 2 (not sure on Tech 1's???) sports came with a 3:91. That ratio (along with the sport Gbox) gives it the edge over a standard 325i which came with a 3:64 in saloon or 3:73 in a convertible.

[Danny06]

Cheer's lad's...

Anyone got a 3.91 diff for sale???

[georgen]

Cheer's lad's...

Anyone got a 3.91 diff for sale???

Best to stick up a post in the wanted section Danny as you'll get more response there..

[The_Diddler]

Spot on. Tech 2 (not sure on Tech 1's???) sports came with a 3:91. That ratio (along with the sport Gbox) gives it the edge over a standard 325i which came with a 3:64 in saloon or 3:73 in a convertible.

My facelift moredoor turd has a 3:73 diff, is that nrmal or just what they happenned to have lying around on the production line

[Ziggy]

Tech-1 sports came with 3.64:1. Which is 'better' depends on your priorities - 3.73:1 is a good compromise IMO.

[AlpineAde]

Spot on. Tech 2 (not sure on Tech 1's???) sports came with a 3:91. That ratio (along with the sport Gbox) gives it the edge over a standard 325i which came with a 3:64 in saloon or 3:73 in a convertible.

My facelift moredoor turd has a 3:73 diff, is that nrmal or just what they happenned to have lying around on the production line

Normal, all things considered. My series 2 sedan has a 3.73 as well.

[town325i]

my touring has a 3.73 lsd too all though i did fit it myself its the best all round diff

[SHAKEELE30]

what about the 3.25 lsd, arent they any good

[e30bmlover]

3.73 ftw... the best of both!

[town325i]

what about the 3.25 lsd, arent they any good

that will be a bit to long

[B7]

Spot on. Tech 2 (not sure on Tech 1's???) sports came with a 3:91. That ratio (along with the sport Gbox) gives it the edge over a standard 325i which came with a 3:64 in saloon or 3:73 in a convertible.

My facelift moredoor turd has a 3:73 diff, is that nrmal or just what they happenned to have lying around on the production line

Normal, all things considered. My series 2 sedan has a 3.73 as well.

I've seen both. I thought the more common ratio in a saloon is the 3:64 but there seems no comminality to it. I'm hoping a car Si and I may have secured has a 3:64 in it. We know it has an LSD but which one. '64 or a '73.

I actually prefer the '64 in my convertible over the '73 I replaced. But them maybe that as it's an auto.

[S38B38]

I think 3.73 is one of the best overall ratio for M20B25

[don-king]

IMO the 3.91 is the best LSD.........

[Danny06]

cheers for the replys but im looking to no about the best diff for the e30 325i sport only.

[town325i]

the best one for your car is probably the one you have in it already why do you want to change it is it noisy or something?

[Danny06]

Its fuked to put it gently so just replaceing it.

[town325i]

its best to replace with what you already have

[Danny06]

going to do that.

Would any one no the sizes and weight of a lsd as looking to get a quote for shipping.

[e30shed]

I guess theres probably an easy answer to this: How do you identify what lsd you have fitted? Is it stamped on the diff?

[Danny06]

yea there should be a wee plate with the size stamped onit.

[AlpineAde]

ANd if it is an LSD it will have an "S" as part of its stamp.

[AlpineAde]

cheers for the replys but im looking to no about the best diff for the e30 325i sport only.

If you have a Sport then keep it as is and source a 3.91 LSD.

[djk]

Haven't tried a sport box, but would have thought 3.91 felt the best with the taller first gear. My old touring had a 3.91 open diff and the stock 260 box 1st gear was useless.

[Danny06]

cheers for all your help.. would anyone no the weight ect of a diff as trying to get shipping prices.

[Ziggy]

37kg. Was approx £15 with interparcel.com

http://www.e30zone.net/modules.php?name ... c&t=130230

[Danny06]

cheers ziggy thats a great help. good man.

[buzz6353]

There is a guy called Kevo on here that repairs diffs you might want to look him up

[Danny06]

Got sorted now anyway thanks.