E28 525e differential 3.08

[frank_maz 0]

Hi

 

Let's see who can shed some info on this as I'm struck

 

1987 525e

 

From my knowledge 525e were equipped with either 2.93 or 3.07 diffs

 

Some were lsd which should have an S at the end

 

Mine as 3.08 2001 as you can see in the picture

 

Never come across this before

 

It seems to be an lsd as well

[duncan-uk 2,584]

Just had a quick look at Andy Everett's book and yes its 2.97 (manual) and pre 84 models then 3.07 (auto) on the 525e.

 

No mention of a 3.08 on any e28 but this ratio is used on an e46 320d it seems, which would fit with 2001 if that's the year?

 

Is it possible a different diff has been fitted? Interesting to know if e46 stuff fits!

[frank_maz 0]

1 hour ago, duncan-uk said:

Just had a quick look at Andy Everett's book and yes its 2.97 (manual) and pre 84 models then 3.07 (auto) on the 525e.

 

No mention of a 3.08 on any e28 but this ratio is used on an e46 320d it seems, which would fit with 2001 if that's the year?

 

Is it possible a different diff has been fitted? Interesting to know if e46 stuff fits!

Hi

 

I did see that the diff ratio is used on e39/e46 too but don't look like one

 

This seems e28 shape and also the tag print looks e28 too, bit odd isn't it as never come across the ratio before

 

I asked Andy this morning before posting and he hasn't come across it before

[duncan-uk 2,584]

e28 back plate and parts on a later diff? Odd as you say.

 

Any other markings?

[JohnH 148]

The tag does look rather clean and nice even if the rest of it looks like a dogs dinner. 

 

Having said that I wouldn't be surprised if the E46 diff internals wouldn't fit a medium case diff.

[duncan-uk 2,584]

^ unlikely to be an LSD though unless that can be fitted too?