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General Forum : E12 Diff

- BMW E21 Community
   - General Forum
      - E12 Diff
davethedog   Posted Friday, Jan 5th 3:30pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 149
   
Northants, England
E21 320
Happy new year to you all.
I'm after a lsd from an E12 M535 with a gear ratio of 3.06 (although the gear ratio is not that important). This is to fit in the back of my E21 using a Fritz's Bits conversion cross member.
Can anybody help.
Thanks,
James

M42powered   Posted Friday, Jan 5th 4:54pm [Edit] [Quote] [IMS] [View car]
Staff
Post nr. 690
   
Arizona, USA
1981 BMW 320i
E12 M535's aren't all that easy to find. E12's sure. I think you'll have to order the LSD portion.

I've been to Fritz Bits befores and seen them mention that E12 diff. I was wondering if a big case from a E28 would fit? Did you purchase the rear subframe from them? What was the cost?

Jason_323i   Posted Friday, Jan 5th 10:18pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 426
   
UK, Scotland
323i 2.7 tripple webber track car. Maserati Biturbo
Hi Dave

I have the fritz set up inmy car, the e12 diff is dimensionaly close to the e21,the e28 fouls the cross memeber behind the spare wheel well.

But i do have a spare e12 m535i diff but i need to check the ratio. I have mailed you my email to discuss

What engine are you going for v8?

Jason

Himizoli   Posted Saturday, Jan 6th 10:04pm [Edit] [Quote] [IMS] [View car]
Junior Member
Post nr. 5

Hungary
320
Can you post some picture about Fritz Bits E12 diff conversion?

Al_Canuck   Posted Tuesday, Jan 9th 10:32pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 391

Surrey, British Columbia
76 BMW 2002, 81 RHD 323i, 85 535i
E12 diff is a sideloader, correct? Totally different from an E28 unit. Just an FYI.

Al

davethedog   Posted Wednesday, Jan 10th 3:19pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 152
   
Northants, England
E21 320
Himizoli wrote:
Can you post some picture about Fritz Bits E12 diff conversion?


I'm picking the cross member up at the end off the month. I'll post some pictures then.

redmist   Posted Wednesday, Jan 10th 10:08pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 1020
   
NY USA
357i , 325i e30 turbo
Di they have a website?
Thanks

sunbeam***   Posted Thursday, Jan 11th 12:11am [Edit] [Quote] [IMS] [View car]
Member
Post nr. 229
   
wirral UK
1982 323i
They do but its not the best you've ever seen!!!
http://www.fritzsbits.co.uk/

Told you!

davethedog   Posted Tuesday, Jan 23rd 3:32pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 156
   
Northants, England
E21 320
Thanks to Jason I am now the proud owner of an E12 Diff. I was wondering if anybody can tell me what all the gubbins on the side is. It looks like some sort of oil breather system.
I was led to believe you can run a diff oil cooler on this diff. Is this what it replaces.

imaradiostar   Posted Wednesday, Jan 24th 3:10am [Edit] [Quote] [IMS] [View car]
Member
Post nr. 988
   
Nashville, TN
81 323i, 82 525i, 85 524td, 90 535i
Have you seen the e30/e21 hybrid rear subframe? I have pictures of it on my hard drive if you'd like me to post. I'm planning to build one for my project car.

jamie

davethedog   Posted Friday, Jan 26th 3:13pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 157
   
Northants, England
E21 320
davethedog wrote:
Thanks to Jason I am now the proud owner of an E12 Diff. I was wondering if anybody can tell me what all the gubbins on the side is. It looks like some sort of oil breather system.
I was led to believe you can run a diff oil cooler on this diff. Is this what it replaces.


I have spoke to someone that knows and he has told me that the stuff on the side is an oil cooler. It works by the oil being thrown around the diff going into the top tube and then gravity bringing through the cooler to the bottom of the diff.
I was wondering if I fit a remote cooler to the diff would I have to use an oil pump to circulate the oil?

Jason_323i   Posted Friday, Jan 26th 3:40pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 437
   
UK, Scotland
323i 2.7 tripple webber track car. Maserati Biturbo
Hi dave

Teh e12 diffs are known for running hot, it said that the csl racer diffs glow red.

as far as I can tell the system works by condesing (& hence cooling) the oil that has heated into vapor and retuning it to the diff.

An external oil cooler is easy the pump is tricky mocal do an electric one, but soem people have tried and eltric 12v bilge or water pump

Jason


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